Python lib2to3.fixer_util.token.COMMA Examples

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def remove_params(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Removes all keyword-only args from the params list and a bare star, if any.
    Does not add the kwargs dict if needed.
    Returns True if more action is needed, False if not
    (more action is needed if no kwargs dict exists)
    """
    assert raw_params[0].type == token.STAR
    if raw_params[1].type == token.COMMA:
        raw_params[0].remove()
        raw_params[1].remove()
        kw_params = raw_params[2:]
    else:
        kw_params = raw_params[3:]
    for param in kw_params:
        if param.type != token.DOUBLESTAR:
            param.remove()
        else:
            return False
    else:
        return True 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def needs_fixing(raw_params, kwargs_default=_kwargs_default_name):
    u"""
    Returns string with the name of the kwargs dict if the params after the first star need fixing
    Otherwise returns empty string
    """
    found_kwargs = False
    needs_fix = False

    for t in raw_params[2:]:
        if t.type == token.COMMA:
            # Commas are irrelevant at this stage.
            continue
        elif t.type == token.NAME and not found_kwargs:
            # Keyword-only argument: definitely need to fix.
            needs_fix = True
        elif t.type == token.NAME and found_kwargs:
            # Return 'foobar' of **foobar, if needed.
            return t.value if needs_fix else u''
        elif t.type == token.DOUBLESTAR:
            # Found either '*' from **foobar.
            found_kwargs = True
    else:
        # Never found **foobar.  Return a synthetic name, if needed.
        return kwargs_default if needs_fix else u'' 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in ('imap', 'izip', 'ifilter'):
                child.value = None
                child.remove()
            elif member_name in ('ifilterfalse', 'izip_longest'):
                node.changed()
                name_node.value = ('filterfalse' if member_name[1] == 'f'
                                   else 'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in (u'imap', u'izip', u'ifilter'):
                child.value = None
                child.remove()
            elif member_name in (u'ifilterfalse', u'izip_longest'):
                node.changed()
                name_node.value = (u'filterfalse' if member_name[1] == u'f'
                                   else u'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        params_rawlist = results[u"params"]
        for i, item in enumerate(params_rawlist):
            if item.type == token.STAR:
                params_rawlist = params_rawlist[i:]
                break
        else:
            return
        # params is guaranteed to be a list starting with *.
        # if fixing is needed, there will be at least 3 items in this list:
        # [STAR, COMMA, NAME] is the minimum that we need to worry about.
        new_kwargs = needs_fixing(params_rawlist)
        # new_kwargs is the name of the kwargs dictionary.
        if not new_kwargs:
            return
        suitify(node)

        # At this point, params_rawlist is guaranteed to be a list
        # beginning with a star that includes at least one keyword-only param
        # e.g., [STAR, NAME, COMMA, NAME, COMMA, DOUBLESTAR, NAME] or
        # [STAR, COMMA, NAME], or [STAR, COMMA, NAME, COMMA, DOUBLESTAR, NAME]

        # Anatomy of a funcdef: ['def', 'name', parameters, ':', suite]
        # Anatomy of that suite: [NEWLINE, INDENT, first_stmt, all_other_stmts]
        # We need to insert our new stuff before the first_stmt and change the
        # first_stmt's prefix.

        suite = node.children[4]
        first_stmt = suite.children[2]
        ident = indentation(first_stmt)

        for name, default_value in gen_params(params_rawlist):
            if default_value is None:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_assign_template %{u'name':name, u'kwargs':new_kwargs}, prefix=ident))
            else:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_else_template %{u'name':name, u'default':default_value}, prefix=ident))
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_if_template %{u'assign':_assign_template %{u'name':name, u'kwargs':new_kwargs}, u'name':name, u'kwargs':new_kwargs}, prefix=ident))
        first_stmt.prefix = ident
        suite.children[2].prefix = u""

        # Now, we need to fix up the list of params.

        must_add_kwargs = remove_params(params_rawlist)
        if must_add_kwargs:
            arglist = results[u'arglist']
            if len(arglist.children) > 0 and arglist.children[-1].type != token.COMMA:
                arglist.append_child(Comma())
            arglist.append_child(DoubleStar(prefix=u" "))
            arglist.append_child(Name(new_kwargs)) 

def transform(self, node, results):
        params_rawlist = results[u"params"]
        for i, item in enumerate(params_rawlist):
            if item.type == token.STAR:
                params_rawlist = params_rawlist[i:]
                break
        else:
            return
        # params is guaranteed to be a list starting with *.
        # if fixing is needed, there will be at least 3 items in this list:
        # [STAR, COMMA, NAME] is the minimum that we need to worry about.
        new_kwargs = needs_fixing(params_rawlist)
        # new_kwargs is the name of the kwargs dictionary.
        if not new_kwargs:
            return
        suitify(node)

        # At this point, params_rawlist is guaranteed to be a list
        # beginning with a star that includes at least one keyword-only param
        # e.g., [STAR, NAME, COMMA, NAME, COMMA, DOUBLESTAR, NAME] or
        # [STAR, COMMA, NAME], or [STAR, COMMA, NAME, COMMA, DOUBLESTAR, NAME]

        # Anatomy of a funcdef: ['def', 'name', parameters, ':', suite]
        # Anatomy of that suite: [NEWLINE, INDENT, first_stmt, all_other_stmts]
        # We need to insert our new stuff before the first_stmt and change the
        # first_stmt's prefix.

        suite = node.children[4]
        first_stmt = suite.children[2]
        ident = indentation(first_stmt)

        for name, default_value in gen_params(params_rawlist):
            if default_value is None:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_assign_template %{u'name':name, u'kwargs':new_kwargs}, prefix=ident))
            else:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_else_template %{u'name':name, u'default':default_value}, prefix=ident))
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_if_template %{u'assign':_assign_template %{u'name':name, u'kwargs':new_kwargs}, u'name':name, u'kwargs':new_kwargs}, prefix=ident))
        first_stmt.prefix = ident
        suite.children[2].prefix = u""

        # Now, we need to fix up the list of params.

        must_add_kwargs = remove_params(params_rawlist)
        if must_add_kwargs:
            arglist = results[u'arglist']
            if len(arglist.children) > 0 and arglist.children[-1].type != token.COMMA:
                arglist.append_child(Comma())
            arglist.append_child(DoubleStar(prefix=u" "))
            arglist.append_child(Name(new_kwargs)) 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in (u'imap', u'izip', u'ifilter'):
                child.value = None
                child.remove()
            elif member_name in (u'ifilterfalse', u'izip_longest'):
                node.changed()
                name_node.value = (u'filterfalse' if member_name[1] == u'f'
                                   else u'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in (u'imap', u'izip', u'ifilter'):
                child.value = None
                child.remove()
            elif member_name in (u'ifilterfalse', u'izip_longest'):
                node.changed()
                name_node.value = (u'filterfalse' if member_name[1] == u'f'
                                   else u'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        params_rawlist = results[u"params"]
        for i, item in enumerate(params_rawlist):
            if item.type == token.STAR:
                params_rawlist = params_rawlist[i:]
                break
        else:
            return
        # params is guaranteed to be a list starting with *.
        # if fixing is needed, there will be at least 3 items in this list:
        # [STAR, COMMA, NAME] is the minimum that we need to worry about.
        new_kwargs = needs_fixing(params_rawlist)
        # new_kwargs is the name of the kwargs dictionary.
        if not new_kwargs:
            return
        suitify(node)

        # At this point, params_rawlist is guaranteed to be a list
        # beginning with a star that includes at least one keyword-only param
        # e.g., [STAR, NAME, COMMA, NAME, COMMA, DOUBLESTAR, NAME] or
        # [STAR, COMMA, NAME], or [STAR, COMMA, NAME, COMMA, DOUBLESTAR, NAME]

        # Anatomy of a funcdef: ['def', 'name', parameters, ':', suite]
        # Anatomy of that suite: [NEWLINE, INDENT, first_stmt, all_other_stmts]
        # We need to insert our new stuff before the first_stmt and change the
        # first_stmt's prefix.

        suite = node.children[4]
        first_stmt = suite.children[2]
        ident = indentation(first_stmt)

        for name, default_value in gen_params(params_rawlist):
            if default_value is None:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_assign_template %{u'name':name, u'kwargs':new_kwargs}, prefix=ident))
            else:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_else_template %{u'name':name, u'default':default_value}, prefix=ident))
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_if_template %{u'assign':_assign_template %{u'name':name, u'kwargs':new_kwargs}, u'name':name, u'kwargs':new_kwargs}, prefix=ident))
        first_stmt.prefix = ident
        suite.children[2].prefix = u""

        # Now, we need to fix up the list of params.

        must_add_kwargs = remove_params(params_rawlist)
        if must_add_kwargs:
            arglist = results[u'arglist']
            if len(arglist.children) > 0 and arglist.children[-1].type != token.COMMA:
                arglist.append_child(Comma())
            arglist.append_child(DoubleStar(prefix=u" "))
            arglist.append_child(Name(new_kwargs)) 

def transform(self, node, results):
        params_rawlist = results[u"params"]
        for i, item in enumerate(params_rawlist):
            if item.type == token.STAR:
                params_rawlist = params_rawlist[i:]
                break
        else:
            return
        # params is guaranteed to be a list starting with *.
        # if fixing is needed, there will be at least 3 items in this list:
        # [STAR, COMMA, NAME] is the minimum that we need to worry about.
        new_kwargs = needs_fixing(params_rawlist)
        # new_kwargs is the name of the kwargs dictionary.
        if not new_kwargs:
            return
        suitify(node)

        # At this point, params_rawlist is guaranteed to be a list
        # beginning with a star that includes at least one keyword-only param
        # e.g., [STAR, NAME, COMMA, NAME, COMMA, DOUBLESTAR, NAME] or
        # [STAR, COMMA, NAME], or [STAR, COMMA, NAME, COMMA, DOUBLESTAR, NAME]

        # Anatomy of a funcdef: ['def', 'name', parameters, ':', suite]
        # Anatomy of that suite: [NEWLINE, INDENT, first_stmt, all_other_stmts]
        # We need to insert our new stuff before the first_stmt and change the
        # first_stmt's prefix.

        suite = node.children[4]
        first_stmt = suite.children[2]
        ident = indentation(first_stmt)

        for name, default_value in gen_params(params_rawlist):
            if default_value is None:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_assign_template %{u'name':name, u'kwargs':new_kwargs}, prefix=ident))
            else:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_else_template %{u'name':name, u'default':default_value}, prefix=ident))
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_if_template %{u'assign':_assign_template %{u'name':name, u'kwargs':new_kwargs}, u'name':name, u'kwargs':new_kwargs}, prefix=ident))
        first_stmt.prefix = ident
        suite.children[2].prefix = u""

        # Now, we need to fix up the list of params.

        must_add_kwargs = remove_params(params_rawlist)
        if must_add_kwargs:
            arglist = results[u'arglist']
            if len(arglist.children) > 0 and arglist.children[-1].type != token.COMMA:
                arglist.append_child(Comma())
            arglist.append_child(DoubleStar(prefix=u" "))
            arglist.append_child(Name(new_kwargs)) 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in (u'imap', u'izip', u'ifilter'):
                child.value = None
                child.remove()
            elif member_name in (u'ifilterfalse', u'izip_longest'):
                node.changed()
                name_node.value = (u'filterfalse' if member_name[1] == u'f'
                                   else u'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in ('imap', 'izip', 'ifilter'):
                child.value = None
                child.remove()
            elif member_name in ('ifilterfalse', 'izip_longest'):
                node.changed()
                name_node.value = ('filterfalse' if member_name[1] == 'f'
                                   else 'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        params_rawlist = results[u"params"]
        for i, item in enumerate(params_rawlist):
            if item.type == token.STAR:
                params_rawlist = params_rawlist[i:]
                break
        else:
            return
        # params is guaranteed to be a list starting with *.
        # if fixing is needed, there will be at least 3 items in this list:
        # [STAR, COMMA, NAME] is the minimum that we need to worry about.
        new_kwargs = needs_fixing(params_rawlist)
        # new_kwargs is the name of the kwargs dictionary.
        if not new_kwargs:
            return
        suitify(node)

        # At this point, params_rawlist is guaranteed to be a list
        # beginning with a star that includes at least one keyword-only param
        # e.g., [STAR, NAME, COMMA, NAME, COMMA, DOUBLESTAR, NAME] or
        # [STAR, COMMA, NAME], or [STAR, COMMA, NAME, COMMA, DOUBLESTAR, NAME]

        # Anatomy of a funcdef: ['def', 'name', parameters, ':', suite]
        # Anatomy of that suite: [NEWLINE, INDENT, first_stmt, all_other_stmts]
        # We need to insert our new stuff before the first_stmt and change the
        # first_stmt's prefix.

        suite = node.children[4]
        first_stmt = suite.children[2]
        ident = indentation(first_stmt)

        for name, default_value in gen_params(params_rawlist):
            if default_value is None:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_assign_template %{u'name':name, u'kwargs':new_kwargs}, prefix=ident))
            else:
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_else_template %{u'name':name, u'default':default_value}, prefix=ident))
                suite.insert_child(2, Newline())
                suite.insert_child(2, String(_if_template %{u'assign':_assign_template %{u'name':name, u'kwargs':new_kwargs}, u'name':name, u'kwargs':new_kwargs}, prefix=ident))
        first_stmt.prefix = ident
        suite.children[2].prefix = u""

        # Now, we need to fix up the list of params.

        must_add_kwargs = remove_params(params_rawlist)
        if must_add_kwargs:
            arglist = results[u'arglist']
            if len(arglist.children) > 0 and arglist.children[-1].type != token.COMMA:
                arglist.append_child(Comma())
            arglist.append_child(DoubleStar(prefix=u" "))
            arglist.append_child(Name(new_kwargs)) 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in (u'imap', u'izip', u'ifilter'):
                child.value = None
                child.remove()
            elif member_name in (u'ifilterfalse', u'izip_longest'):
                node.changed()
                name_node.value = (u'filterfalse' if member_name[1] == u'f'
                                   else u'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node 

def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in (u'imap', u'izip', u'ifilter'):
                child.value = None
                child.remove()
            elif member_name in (u'ifilterfalse', u'izip_longest'):
                node.changed()
                name_node.value = (u'filterfalse' if member_name[1] == u'f'
                                   else u'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node