Python traceback.print_list() Examples

def print_exception():
    import linecache
    linecache.checkcache()
    flush_stdout()
    efile = sys.stderr
    typ, val, tb = excinfo = sys.exc_info()
    sys.last_type, sys.last_value, sys.last_traceback = excinfo
    tbe = traceback.extract_tb(tb)
    print>>efile, '\nTraceback (most recent call last):'
    exclude = ("run.py", "rpc.py", "threading.py", "Queue.py",
               "RemoteDebugger.py", "bdb.py")
    cleanup_traceback(tbe, exclude)
    traceback.print_list(tbe, file=efile)
    lines = traceback.format_exception_only(typ, val)
    for line in lines:
        print>>efile, line, 

def print_exception():
    import linecache
    linecache.checkcache()
    flush_stdout()
    efile = sys.stderr
    typ, val, tb = excinfo = sys.exc_info()
    sys.last_type, sys.last_value, sys.last_traceback = excinfo
    tbe = traceback.extract_tb(tb)
    print>>efile, '\nTraceback (most recent call last):'
    exclude = ("run.py", "rpc.py", "threading.py", "Queue.py",
               "RemoteDebugger.py", "bdb.py")
    cleanup_traceback(tbe, exclude)
    traceback.print_list(tbe, file=efile)
    lines = traceback.format_exception_only(typ, val)
    for line in lines:
        print>>efile, line, 

def print_exception():
    import linecache
    linecache.checkcache()
    flush_stdout()
    efile = sys.stderr
    typ, val, tb = excinfo = sys.exc_info()
    sys.last_type, sys.last_value, sys.last_traceback = excinfo
    tbe = traceback.extract_tb(tb)
    print>>efile, '\nTraceback (most recent call last):'
    exclude = ("run.py", "rpc.py", "threading.py", "Queue.py",
               "RemoteDebugger.py", "bdb.py")
    cleanup_traceback(tbe, exclude)
    traceback.print_list(tbe, file=efile)
    lines = traceback.format_exception_only(typ, val)
    for line in lines:
        print>>efile, line, 

def _task_print_stack(task, limit, file):
    extracted_list = []
    checked = set()
    for f in task.get_stack(limit=limit):
        lineno = f.f_lineno
        co = f.f_code
        filename = co.co_filename
        name = co.co_name
        if filename not in checked:
            checked.add(filename)
            linecache.checkcache(filename)
        line = linecache.getline(filename, lineno, f.f_globals)
        extracted_list.append((filename, lineno, name, line))

    exc = task._exception
    if not extracted_list:
        print(f'No stack for {task!r}', file=file)
    elif exc is not None:
        print(f'Traceback for {task!r} (most recent call last):', file=file)
    else:
        print(f'Stack for {task!r} (most recent call last):', file=file)

    traceback.print_list(extracted_list, file=file)
    if exc is not None:
        for line in traceback.format_exception_only(exc.__class__, exc):
            print(line, file=file, end='') 

def _task_print_stack(task, limit, file):
    extracted_list = []
    checked = set()
    for f in task.get_stack(limit=limit):
        lineno = f.f_lineno
        co = f.f_code
        filename = co.co_filename
        name = co.co_name
        if filename not in checked:
            checked.add(filename)
            linecache.checkcache(filename)
        line = linecache.getline(filename, lineno, f.f_globals)
        extracted_list.append((filename, lineno, name, line))

    exc = task._exception
    if not extracted_list:
        print(f'No stack for {task!r}', file=file)
    elif exc is not None:
        print(f'Traceback for {task!r} (most recent call last):', file=file)
    else:
        print(f'Stack for {task!r} (most recent call last):', file=file)

    traceback.print_list(extracted_list, file=file)
    if exc is not None:
        for line in traceback.format_exception_only(exc.__class__, exc):
            print(line, file=file, end='') 

def _task_print_stack(task, limit, file):
    extracted_list = []
    checked = set()
    for f in task.get_stack(limit=limit):
        lineno = f.f_lineno
        co = f.f_code
        filename = co.co_filename
        name = co.co_name
        if filename not in checked:
            checked.add(filename)
            linecache.checkcache(filename)
        line = linecache.getline(filename, lineno, f.f_globals)
        extracted_list.append((filename, lineno, name, line))

    exc = task._exception
    if not extracted_list:
        print(f'No stack for {task!r}', file=file)
    elif exc is not None:
        print(f'Traceback for {task!r} (most recent call last):', file=file)
    else:
        print(f'Stack for {task!r} (most recent call last):', file=file)

    traceback.print_list(extracted_list, file=file)
    if exc is not None:
        for line in traceback.format_exception_only(exc.__class__, exc):
            print(line, file=file, end='') 

def print_exception():
    import linecache
    linecache.checkcache()
    flush_stdout()
    efile = sys.stderr
    typ, val, tb = excinfo = sys.exc_info()
    sys.last_type, sys.last_value, sys.last_traceback = excinfo
    seen = set()

    def print_exc(typ, exc, tb):
        seen.add(exc)
        context = exc.__context__
        cause = exc.__cause__
        if cause is not None and cause not in seen:
            print_exc(type(cause), cause, cause.__traceback__)
            print("\nThe above exception was the direct cause "
                  "of the following exception:\n", file=efile)
        elif (context is not None and
              not exc.__suppress_context__ and
              context not in seen):
            print_exc(type(context), context, context.__traceback__)
            print("\nDuring handling of the above exception, "
                  "another exception occurred:\n", file=efile)
        if tb:
            tbe = traceback.extract_tb(tb)
            print('Traceback (most recent call last):', file=efile)
            exclude = ("run.py", "rpc.py", "threading.py", "queue.py",
                       "RemoteDebugger.py", "bdb.py")
            cleanup_traceback(tbe, exclude)
            traceback.print_list(tbe, file=efile)
        lines = traceback.format_exception_only(typ, exc)
        for line in lines:
            print(line, end='', file=efile)

    print_exc(typ, val, tb) 

def print_stack(self, *, limit=None, file=None):
        """Print the stack or traceback for this task's coroutine.

        This produces output similar to that of the traceback module,
        for the frames retrieved by get_stack().  The limit argument
        is passed to get_stack().  The file argument is an I/O stream
        to which the output is written; by default output is written
        to sys.stderr.
        """
        extracted_list = []
        checked = set()
        for f in self.get_stack(limit=limit):
            lineno = f.f_lineno
            co = f.f_code
            filename = co.co_filename
            name = co.co_name
            if filename not in checked:
                checked.add(filename)
                linecache.checkcache(filename)
            line = linecache.getline(filename, lineno, f.f_globals)
            extracted_list.append((filename, lineno, name, line))
        exc = self._exception
        if not extracted_list:
            print('No stack for %r' % self, file=file)
        elif exc is not None:
            print('Traceback for %r (most recent call last):' % self,
                  file=file)
        else:
            print('Stack for %r (most recent call last):' % self,
                  file=file)
        traceback.print_list(extracted_list, file=file)
        if exc is not None:
            for line in traceback.format_exception_only(exc.__class__, exc):
                print(line, file=file, end='') 

def print_stack(self, *, limit=None, file=None):
        """Print the stack or traceback for this task's coroutine.

        This produces output similar to that of the traceback module,
        for the frames retrieved by get_stack().  The limit argument
        is passed to get_stack().  The file argument is an I/O stream
        to which the output is written; by default output is written
        to sys.stderr.
        """
        extracted_list = []
        checked = set()
        for f in self.get_stack(limit=limit):
            lineno = f.f_lineno
            co = f.f_code
            filename = co.co_filename
            name = co.co_name
            if filename not in checked:
                checked.add(filename)
                linecache.checkcache(filename)
            line = linecache.getline(filename, lineno, f.f_globals)
            extracted_list.append((filename, lineno, name, line))
        exc = self._exception
        if not extracted_list:
            print('No stack for %r' % self, file=file)
        elif exc is not None:
            print('Traceback for %r (most recent call last):' % self,
                  file=file)
        else:
            print('Stack for %r (most recent call last):' % self,
                  file=file)
        traceback.print_list(extracted_list, file=file)
        if exc is not None:
            for line in traceback.format_exception_only(exc.__class__, exc):
                print(line, file=file, end='') 

def die(m,s=''):
  """Emit an error message m (and optionally s) and exit with a return
     value 1"""
  msgb("MBUILD ERROR", "%s %s\n\n" % (m,s) )
  etype, value, tb = sys.exc_info()
  if tb is None:
    stack = traceback.extract_stack()[:-1]
    traceback.print_list(stack, file=sys.stdout)
  else:
    traceback.print_exception(etype, value, tb, file=sys.stdout)
  sys.exit(1) 

def print_exception():
    import linecache
    linecache.checkcache()
    flush_stdout()
    efile = sys.stderr
    typ, val, tb = excinfo = sys.exc_info()
    sys.last_type, sys.last_value, sys.last_traceback = excinfo
    seen = set()

    def print_exc(typ, exc, tb):
        seen.add(exc)
        context = exc.__context__
        cause = exc.__cause__
        if cause is not None and cause not in seen:
            print_exc(type(cause), cause, cause.__traceback__)
            print("\nThe above exception was the direct cause "
                  "of the following exception:\n", file=efile)
        elif (context is not None and
              not exc.__suppress_context__ and
              context not in seen):
            print_exc(type(context), context, context.__traceback__)
            print("\nDuring handling of the above exception, "
                  "another exception occurred:\n", file=efile)
        if tb:
            tbe = traceback.extract_tb(tb)
            print('Traceback (most recent call last):', file=efile)
            exclude = ("run.py", "rpc.py", "threading.py", "queue.py",
                       "RemoteDebugger.py", "bdb.py")
            cleanup_traceback(tbe, exclude)
            traceback.print_list(tbe, file=efile)
        lines = traceback.format_exception_only(typ, exc)
        for line in lines:
            print(line, end='', file=efile)

    print_exc(typ, val, tb) 

def print_stack(self, *, limit=None, file=None):
        """Print the stack or traceback for this task's coroutine.

        This produces output similar to that of the traceback module,
        for the frames retrieved by get_stack().  The limit argument
        is passed to get_stack().  The file argument is an I/O stream
        to which the output is written; by default output is written
        to sys.stderr.
        """
        extracted_list = []
        checked = set()
        for f in self.get_stack(limit=limit):
            lineno = f.f_lineno
            co = f.f_code
            filename = co.co_filename
            name = co.co_name
            if filename not in checked:
                checked.add(filename)
                linecache.checkcache(filename)
            line = linecache.getline(filename, lineno, f.f_globals)
            extracted_list.append((filename, lineno, name, line))
        exc = self._exception
        if not extracted_list:
            print('No stack for %r' % self, file=file)
        elif exc is not None:
            print('Traceback for %r (most recent call last):' % self,
                  file=file)
        else:
            print('Stack for %r (most recent call last):' % self,
                  file=file)
        traceback.print_list(extracted_list, file=file)
        if exc is not None:
            for line in traceback.format_exception_only(exc.__class__, exc):
                print(line, file=file, end='') 

def _task_print_stack(task, limit, file):
    extracted_list = []
    checked = set()
    for f in task.get_stack(limit=limit):
        lineno = f.f_lineno
        co = f.f_code
        filename = co.co_filename
        name = co.co_name
        if filename not in checked:
            checked.add(filename)
            linecache.checkcache(filename)
        line = linecache.getline(filename, lineno, f.f_globals)
        extracted_list.append((filename, lineno, name, line))

    exc = task._exception
    if not extracted_list:
        print(f'No stack for {task!r}', file=file)
    elif exc is not None:
        print(f'Traceback for {task!r} (most recent call last):', file=file)
    else:
        print(f'Stack for {task!r} (most recent call last):', file=file)

    traceback.print_list(extracted_list, file=file)
    if exc is not None:
        for line in traceback.format_exception_only(exc.__class__, exc):
            print(line, file=file, end='') 

def print_exception():
    import linecache
    linecache.checkcache()
    flush_stdout()
    efile = sys.stderr
    typ, val, tb = excinfo = sys.exc_info()
    sys.last_type, sys.last_value, sys.last_traceback = excinfo
    seen = set()

    def print_exc(typ, exc, tb):
        seen.add(exc)
        context = exc.__context__
        cause = exc.__cause__
        if cause is not None and cause not in seen:
            print_exc(type(cause), cause, cause.__traceback__)
            print("\nThe above exception was the direct cause "
                  "of the following exception:\n", file=efile)
        elif (context is not None and
              not exc.__suppress_context__ and
              context not in seen):
            print_exc(type(context), context, context.__traceback__)
            print("\nDuring handling of the above exception, "
                  "another exception occurred:\n", file=efile)
        if tb:
            tbe = traceback.extract_tb(tb)
            print('Traceback (most recent call last):', file=efile)
            exclude = ("run.py", "rpc.py", "threading.py", "queue.py",
                       "RemoteDebugger.py", "bdb.py")
            cleanup_traceback(tbe, exclude)
            traceback.print_list(tbe, file=efile)
        lines = traceback.format_exception_only(typ, exc)
        for line in lines:
            print(line, end='', file=efile)

    print_exc(typ, val, tb) 

def print_stack(self, *, limit=None, file=None):
        """Print the stack or traceback for this task's coroutine.

        This produces output similar to that of the traceback module,
        for the frames retrieved by get_stack().  The limit argument
        is passed to get_stack().  The file argument is an I/O stream
        to which the output is written; by default output is written
        to sys.stderr.
        """
        extracted_list = []
        checked = set()
        for f in self.get_stack(limit=limit):
            lineno = f.f_lineno
            co = f.f_code
            filename = co.co_filename
            name = co.co_name
            if filename not in checked:
                checked.add(filename)
                linecache.checkcache(filename)
            line = linecache.getline(filename, lineno, f.f_globals)
            extracted_list.append((filename, lineno, name, line))
        exc = self._exception
        if not extracted_list:
            print('No stack for %r' % self, file=file)
        elif exc is not None:
            print('Traceback for %r (most recent call last):' % self,
                  file=file)
        else:
            print('Stack for %r (most recent call last):' % self,
                  file=file)
        traceback.print_list(extracted_list, file=file)
        if exc is not None:
            for line in traceback.format_exception_only(exc.__class__, exc):
                print(line, file=file, end='') 

def _get_test_value(cls, v):
        """
        Extract test value from variable v.
        Raises AttributeError if there is none.

        For a Constant, the test value is v.value.
        For a Shared variable, it is the internal value.
        For another Variable, it is the content of v.tag.test_value.

        """
        # avoid circular import
        from theano.compile.sharedvalue import SharedVariable

        if isinstance(v, graph.Constant):
            return v.value
        elif isinstance(v, SharedVariable):
            return v.get_value(borrow=True, return_internal_type=True)
        elif isinstance(v, graph.Variable) and hasattr(v.tag, 'test_value'):
            # ensure that the test value is correct
            try:
                ret = v.type.filter(v.tag.test_value)
            except Exception as e:
                # Better error message.
                detailed_err_msg = (
                    "For compute_test_value, one input test value does not"
                    " have the requested type.\n")
                tr = getattr(v.tag, 'trace', [])
                if isinstance(tr, list) and len(tr) > 0:
                    detailed_err_msg += (
                        " \nBacktrace when that variable is created:\n")
                    # Print separate message for each element in the list
                    # of batcktraces
                    sio = StringIO()
                    for subtr in tr:
                        traceback.print_list(subtr, sio)
                    detailed_err_msg += str(sio.getvalue())

                detailed_err_msg += (
                    "\nThe error when converting the test value to that"
                    " variable type:")
                # We need to only have 1 args and it should be of type
                # string.  Otherwise, it print the tuple and so the
                # new line do not get printed.
                args = (detailed_err_msg,) + tuple(str(arg) for arg in e.args)
                e.args = ("\n".join(args),)
                raise
            return ret

        raise AttributeError('%s has no test value' % v) 

def _get_test_value(cls, v):
        """
        Extract test value from variable v.
        Raises AttributeError if there is none.

        For a Constant, the test value is v.value.
        For a Shared variable, it is the internal value.
        For another Variable, it is the content of v.tag.test_value.

        """
        # avoid circular import
        from theano.compile.sharedvalue import SharedVariable

        if isinstance(v, graph.Constant):
            return v.value
        elif isinstance(v, SharedVariable):
            return v.get_value(borrow=True, return_internal_type=True)
        elif isinstance(v, graph.Variable) and hasattr(v.tag, 'test_value'):
            # ensure that the test value is correct
            try:
                ret = v.type.filter(v.tag.test_value)
            except Exception as e:
                # Better error message.
                detailed_err_msg = (
                    "For compute_test_value, one input test value does not"
                    " have the requested type.\n")
                tr = getattr(v.tag, 'trace', [])
                if isinstance(tr, list) and len(tr) > 0:
                    detailed_err_msg += (
                        " \nBacktrace when that variable is created:\n")
                    # Print separate message for each element in the list
                    # of batcktraces
                    sio = StringIO()
                    for subtr in tr:
                        traceback.print_list(subtr, sio)
                    detailed_err_msg += str(sio.getvalue())

                detailed_err_msg += (
                    "\nThe error when converting the test value to that"
                    " variable type:")
                # We need to only have 1 args and it should be of type
                # string.  Otherwise, it print the tuple and so the
                # new line do not get printed.
                args = (detailed_err_msg,) + tuple(str(arg) for arg in e.args)
                e.args = ("\n".join(args),)
                raise
            return ret

        raise AttributeError('%s has no test value' % v)