Python distutils.version() Examples

def split_provision(value):
    """Return the name and optional version number of a provision.

    The version number, if given, will be returned as a `StrictVersion`
    instance, otherwise it will be `None`.

    >>> split_provision('mypkg')
    ('mypkg', None)
    >>> split_provision(' mypkg( 1.2 ) ')
    ('mypkg', StrictVersion ('1.2'))
    """
    global _provision_rx
    if _provision_rx is None:
        _provision_rx = re.compile(
            "([a-zA-Z_]\w*(?:\.[a-zA-Z_]\w*)*)(?:\s*\(\s*([^)\s]+)\s*\))?$")
    value = value.strip()
    m = _provision_rx.match(value)
    if not m:
        raise ValueError("illegal provides specification: %r" % value)
    ver = m.group(2) or None
    if ver:
        ver = distutils.version.StrictVersion(ver)
    return m.group(1), ver 

def split_provision(value):
    """Return the name and optional version number of a provision.

    The version number, if given, will be returned as a `StrictVersion`
    instance, otherwise it will be `None`.

    >>> split_provision('mypkg')
    ('mypkg', None)
    >>> split_provision(' mypkg( 1.2 ) ')
    ('mypkg', StrictVersion ('1.2'))
    """
    global _provision_rx
    if _provision_rx is None:
        _provision_rx = re.compile(
            "([a-zA-Z_]\w*(?:\.[a-zA-Z_]\w*)*)(?:\s*\(\s*([^)\s]+)\s*\))?$")
    value = value.strip()
    m = _provision_rx.match(value)
    if not m:
        raise ValueError("illegal provides specification: %r" % value)
    ver = m.group(2) or None
    if ver:
        ver = distutils.version.StrictVersion(ver)
    return m.group(1), ver 

def setUp(self):
        freetype = distutils.version.StrictVersion(ImageFont.core.freetype2_version)

        self.metrics = self.METRICS['Default']
        for conditions, metrics in self.METRICS.items():
            if not isinstance(conditions, tuple):
                continue

            for condition in conditions:
                version = re.sub('[<=>]', '', condition)
                if (condition.startswith('>=') and freetype >= version) or \
                   (condition.startswith('<') and freetype < version):
                    # Condition was met
                    continue

                # Condition failed
                break
            else:
                # All conditions were met
                self.metrics = metrics 

def checkdep_ghostscript():
    if checkdep_ghostscript.executable is None:
        if sys.platform == 'win32':
            # mgs is the name in miktex
            gs_execs = ['gswin32c', 'gswin64c', 'mgs', 'gs']
        else:
            gs_execs = ['gs']
        for gs_exec in gs_execs:
            try:
                s = subprocess.Popen(
                    [gs_exec, '--version'], stdout=subprocess.PIPE,
                    stderr=subprocess.PIPE)
                stdout, stderr = s.communicate()
                if s.returncode == 0:
                    v = stdout[:-1].decode('ascii')
                    checkdep_ghostscript.executable = gs_exec
                    checkdep_ghostscript.version = v
            except (IndexError, ValueError, OSError):
                pass
    return checkdep_ghostscript.executable, checkdep_ghostscript.version 

def checkdep_ghostscript():
    if sys.platform == 'win32':
        gs_execs = ['gswin32c', 'gswin64c', 'gs']
    else:
        gs_execs = ['gs']
    for gs_exec in gs_execs:
        try:
            s = subprocess.Popen(
                [gs_exec, '--version'], stdout=subprocess.PIPE,
                stderr=subprocess.PIPE)
            stdout, stderr = s.communicate()
            if s.returncode == 0:
                v = byte2str(stdout[:-1])
                return gs_exec, v
        except (IndexError, ValueError, OSError):
            pass
    return None, None 

def sanity_check_dependencies():
    import numpy
    import requests
    import six

    if distutils.version.LooseVersion(numpy.__version__) < distutils.version.LooseVersion('1.10.4'):
        logger.warn("You have 'numpy' version %s installed, but 'gym' requires at least 1.10.4. HINT: upgrade via 'pip install -U numpy'.", numpy.__version__)

    if distutils.version.LooseVersion(requests.__version__) < distutils.version.LooseVersion('2.0'):
        logger.warn("You have 'requests' version %s installed, but 'gym' requires at least 2.0. HINT: upgrade via 'pip install -U requests'.", requests.__version__)

# We automatically configure a logger with a simple stderr handler. If
# you'd rather customize logging yourself, run undo_logger_setup.
#
# (Note: this needs to happen before importing the rest of gym, since
# we may print a warning at load time.) 

def compare_versions(a, b):
    "return True if a is greater than or equal to b"
    if isinstance(a, bytes):
        cbook.warn_deprecated(
            "3.0", "compare_version arguments should be strs.")
        a = a.decode('ascii')
    if isinstance(b, bytes):
        cbook.warn_deprecated(
            "3.0", "compare_version arguments should be strs.")
        b = b.decode('ascii')
    if a:
        a = distutils.version.LooseVersion(a)
        b = distutils.version.LooseVersion(b)
        return a >= b
    else:
        return False 

def checkdep_inkscape():
    if checkdep_inkscape.version is None:
        try:
            s = subprocess.Popen(['inkscape', '-V'],
                                 stdout=subprocess.PIPE,
                                 stderr=subprocess.PIPE)
            stdout, stderr = s.communicate()
            lines = stdout.decode('ascii').split('\n')
            for line in lines:
                if 'Inkscape' in line:
                    v = line.split()[1]
                    break
            checkdep_inkscape.version = v
        except (IndexError, ValueError, UnboundLocalError, OSError):
            pass
    return checkdep_inkscape.version 

def __getitem__(self, key):
        if key in _deprecated_map:
            version, alt_key, alt_val, inverse_alt = _deprecated_map[key]
            cbook.warn_deprecated(
                version, key, obj_type="rcparam", alternative=alt_key)
            return inverse_alt(dict.__getitem__(self, alt_key))

        elif key in _deprecated_ignore_map:
            version, alt_key = _deprecated_ignore_map[key]
            cbook.warn_deprecated(
                version, key, obj_type="rcparam", alternative=alt_key)
            return dict.__getitem__(self, alt_key) if alt_key else None

        elif key == 'examples.directory':
            cbook.warn_deprecated(
                "3.0", "{} is deprecated; in the future, examples will be "
                "found relative to the 'datapath' directory.".format(key))

        elif key == "backend":
            val = dict.__getitem__(self, key)
            if val is rcsetup._auto_backend_sentinel:
                from matplotlib import pyplot as plt
                plt.switch_backend(rcsetup._auto_backend_sentinel)

        return dict.__getitem__(self, key) 

def split_provision(value):
    """Return the name and optional version number of a provision.

    The version number, if given, will be returned as a `StrictVersion`
    instance, otherwise it will be `None`.

    >>> split_provision('mypkg')
    ('mypkg', None)
    >>> split_provision(' mypkg( 1.2 ) ')
    ('mypkg', StrictVersion ('1.2'))
    """
    global _provision_rx
    if _provision_rx is None:
        _provision_rx = re.compile(
            "([a-zA-Z_]\w*(?:\.[a-zA-Z_]\w*)*)(?:\s*\(\s*([^)\s]+)\s*\))?$")
    value = value.strip()
    m = _provision_rx.match(value)
    if not m:
        raise ValueError("illegal provides specification: %r" % value)
    ver = m.group(2) or None
    if ver:
        ver = distutils.version.StrictVersion(ver)
    return m.group(1), ver 

def checkdep_inkscape():
    if checkdep_inkscape.version is None:
        try:
            s = subprocess.Popen(['inkscape', '-V'],
                                 stdout=subprocess.PIPE,
                                 stderr=subprocess.PIPE)
            stdout, stderr = s.communicate()
            lines = stdout.decode('ascii').split('\n')
            for line in lines:
                if 'Inkscape' in line:
                    v = line.split()[1]
                    break
            checkdep_inkscape.version = v
        except (IndexError, ValueError, UnboundLocalError, OSError):
            pass
    return checkdep_inkscape.version 

def get_traces(self, channel_ids=None, start_frame=None, end_frame=None):
        with NWBHDF5IO(self._path, 'r') as io:
            nwbfile = io.read()
            es = nwbfile.acquisition[self._electrical_series_name]
            es_channel_ids = np.array(es.electrodes.table.id[:])[es.electrodes.data[:]].tolist()
            table_ids = [es_channel_ids.index(id) for id in channel_ids]
            if np.array(channel_ids).size > 1 and np.any(np.diff(channel_ids) < 0):
                sorted_idx = np.argsort(table_ids)
                recordings = es.data[start_frame:end_frame, np.sort(table_ids)].T
                traces = recordings[sorted_idx, :]
            else:
                traces = es.data[start_frame:end_frame, table_ids].T
            # This DatasetView and lazy operations will only work within context
            # We're keeping the non-lazy version for now
            # es_view = DatasetView(es.data)  # es is an instantiated h5py dataset
            # traces = es_view.lazy_slice[start_frame:end_frame, channel_ids].lazy_transpose()
        return traces 

def checkdep_ghostscript():
    if checkdep_ghostscript.executable is None:
        if sys.platform == 'win32':
            # mgs is the name in miktex
            gs_execs = ['gswin32c', 'gswin64c', 'mgs', 'gs']
        else:
            gs_execs = ['gs']
        for gs_exec in gs_execs:
            try:
                s = subprocess.Popen(
                    [gs_exec, '--version'], stdout=subprocess.PIPE,
                    stderr=subprocess.PIPE)
                stdout, stderr = s.communicate()
                if s.returncode == 0:
                    v = stdout[:-1].decode('ascii')
                    checkdep_ghostscript.executable = gs_exec
                    checkdep_ghostscript.version = v
            except (IndexError, ValueError, OSError):
                pass
    return checkdep_ghostscript.executable, checkdep_ghostscript.version 

def compare_versions(a, b):
    "return True if a is greater than or equal to b"
    if isinstance(a, bytes):
        cbook.warn_deprecated(
            "3.0", "compare_version arguments should be strs.")
        a = a.decode('ascii')
    if isinstance(b, bytes):
        cbook.warn_deprecated(
            "3.0", "compare_version arguments should be strs.")
        b = b.decode('ascii')
    if a:
        a = distutils.version.LooseVersion(a)
        b = distutils.version.LooseVersion(b)
        return a >= b
    else:
        return False 

def dvipng_hack_alpha():
    try:
        p = Popen(['dvipng', '-version'], stdin=PIPE, stdout=PIPE,
                  stderr=STDOUT, close_fds=(sys.platform != 'win32'))
        stdout, stderr = p.communicate()
    except OSError:
        mpl.verbose.report('No dvipng was found', 'helpful')
        return False
    lines = stdout.decode('ascii').split('\n')
    for line in lines:
        if line.startswith('dvipng '):
            version = line.split()[-1]
            mpl.verbose.report('Found dvipng version %s' % version,
                               'helpful')
            version = distutils.version.LooseVersion(version)
            return version < distutils.version.LooseVersion('1.6')
    mpl.verbose.report('Unexpected response from dvipng -version', 'helpful')
    return False 

def _check_tridesclous_version(self):
        folder_version= self.info.get('tridesclous_version', 'unknown')
        
        if folder_version is 'unknown':
            w = True
        else:
            v1 = distutils.version.LooseVersion(tridesclous_version).version
            v2 = distutils.version.LooseVersion(self.info['tridesclous_version']).version
            if (v1[0] == v2[0]) and (v1[1] == v2[1]):
                w = False
            else:
                w = True

        if w:
            txt = 'This folder was created with an old tridesclous version ({})\n'\
                    'The actual version is {}\n'\
                    'You may have bug in internal structure.'
            print(txt.format(folder_version, tridesclous_version)) 

def split_provision(value):
    """Return the name and optional version number of a provision.

    The version number, if given, will be returned as a `StrictVersion`
    instance, otherwise it will be `None`.

    >>> split_provision('mypkg')
    ('mypkg', None)
    >>> split_provision(' mypkg( 1.2 ) ')
    ('mypkg', StrictVersion ('1.2'))
    """
    global _provision_rx
    if _provision_rx is None:
        _provision_rx = re.compile(
            "([a-zA-Z_]\w*(?:\.[a-zA-Z_]\w*)*)(?:\s*\(\s*([^)\s]+)\s*\))?$")
    value = value.strip()
    m = _provision_rx.match(value)
    if not m:
        raise ValueError("illegal provides specification: %r" % value)
    ver = m.group(2) or None
    if ver:
        ver = distutils.version.StrictVersion(ver)
    return m.group(1), ver 

def checkdep_ghostscript():
    if sys.platform == 'win32':
        gs_execs = ['gswin32c', 'gswin64c', 'gs']
    else:
        gs_execs = ['gs']
    for gs_exec in gs_execs:
        try:
            s = subprocess.Popen(
                [gs_exec, '--version'], stdout=subprocess.PIPE,
                stderr=subprocess.PIPE)
            stdout, stderr = s.communicate()
            if s.returncode == 0:
                v = byte2str(stdout[:-1])
                return gs_exec, v
        except (IndexError, ValueError, OSError):
            pass
    return None, None 

def checkdep_ghostscript():
    if sys.platform == 'win32':
        gs_execs = ['gswin32c', 'gswin64c', 'gs']
    else:
        gs_execs = ['gs']
    for gs_exec in gs_execs:
        try:
            s = subprocess.Popen(
                [gs_exec, '--version'], stdout=subprocess.PIPE,
                stderr=subprocess.PIPE)
            stdout, stderr = s.communicate()
            if s.returncode == 0:
                v = stdout[:-1].decode('ascii')
                return gs_exec, v
        except (IndexError, ValueError, OSError):
            pass
    return None, None 

def version_ge(version1, version2):
    """
    >>> from util_cplat_packages import *
    >>> version1 = distro_version
    >>> version2 = '15.03'
    """
    import distutils.version
    flag = distutils.version.LooseVersion(version1) >= distutils.version.LooseVersion(version2)
    return flag


# PRINT WHAT WE ARE WORKING WITH 

def version_info(self):
        return {
            'backend':self.backend,
            'version':str(subprocess.check_output([self.backend, '-version'],
                                                  stderr=subprocess.STDOUT)),
            'cmdline':self.cmdline
        } 

def checkdep_pdftops():
    try:
        s = subprocess.Popen(['pdftops','-v'], stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        for line in s.stderr:
            if b'version' in line:
                v = byte2str(line.split()[-1])
        return v
    except (IndexError, ValueError, UnboundLocalError, OSError):
        return None 

def capture_frame(self, frame):
        if not isinstance(frame, (np.ndarray, np.generic)):
            raise error.InvalidFrame('Wrong type {} for {} (must be np.ndarray or np.generic)'.format(type(frame), frame))
        if frame.shape != self.frame_shape:
            raise error.InvalidFrame("Your frame has shape {}, but the VideoRecorder is configured for shape {}.".format(frame.shape, self.frame_shape))
        if frame.dtype != np.uint8:
            raise error.InvalidFrame("Your frame has data type {}, but we require uint8 (i.e. RGB values from 0-255).".format(frame.dtype))

        if distutils.version.LooseVersion(np.__version__) >= distutils.version.LooseVersion('1.9.0'):
            self.proc.stdin.write(frame.tobytes())
        else:
            self.proc.stdin.write(frame.tostring()) 

def close(self):
        #frame_duration = float(1) / self.frames_per_sec
        frame_duration = .5

        # Turn frames into events: clear screen beforehand
        # https://rosettacode.org/wiki/Terminal_control/Clear_the_screen#Python
        # https://rosettacode.org/wiki/Terminal_control/Cursor_positioning#Python
        clear_code = six.b("%c[2J\033[1;1H" % (27))
        # Decode the bytes as UTF-8 since JSON may only contain UTF-8
        events = [ (frame_duration, (clear_code+frame.replace(six.b('\n'),six.b('\r\n'))).decode('utf-8'))  for frame in self.frames ]

        # Calculate frame size from the largest frames.
        # Add some padding since we'll get cut off otherwise.
        height = max([frame.count(six.b('\n')) for frame in self.frames]) + 1
        width = max([max([len(line) for line in frame.split(six.b('\n'))]) for frame in self.frames]) + 2

        data = {
            "version": 1,
            "width": width,
            "height": height,
            "duration": len(self.frames)*frame_duration,
            "command": "-",
            "title": "gym VideoRecorder episode",
            "env": {}, # could add some env metadata here
            "stdout": events,
        }

        with open(self.output_path, 'w') as f:
            json.dump(data, f) 

def get_py2exe_datafiles():
    datapath = get_data_path()
    _, tail = os.path.split(datapath)
    d = {}
    for root, _, files in os.walk(datapath):
        # Need to explicitly remove cocoa_agg files or py2exe complains
        # NOTE I dont know why, but do as previous version
        if 'Matplotlib.nib' in files:
            files.remove('Matplotlib.nib')
        files = [os.path.join(root, filename) for filename in files]
        root = root.replace(tail, 'mpl-data')
        root = root[root.index('mpl-data'):]
        d[root] = files
    return list(d.items()) 

def checkdep_ps_distiller(s):
    if not s:
        return False

    flag = True
    gs_req = '7.07'
    gs_sugg = '7.07'
    gs_exec, gs_v = checkdep_ghostscript()
    if compare_versions(gs_v, gs_sugg): pass
    elif compare_versions(gs_v, gs_req):
        verbose.report(('ghostscript-%s found. ghostscript-%s or later '
                        'is recommended to use the ps.usedistiller option.') % (gs_v, gs_sugg))
    else:
        flag = False
        warnings.warn(('matplotlibrc ps.usedistiller option can not be used '
                       'unless ghostscript-%s or later is installed on your system') % gs_req)

    if s == 'xpdf':
        pdftops_req = '3.0'
        pdftops_req_alt = '0.9' # poppler version numbers, ugh
        pdftops_v = checkdep_pdftops()
        if compare_versions(pdftops_v, pdftops_req):
            pass
        elif compare_versions(pdftops_v, pdftops_req_alt) and not \
            compare_versions(pdftops_v, '1.0'):
            pass
        else:
            flag = False
            warnings.warn(('matplotlibrc ps.usedistiller can not be set to '
                           'xpdf unless xpdf-%s or later is installed on your system') % pdftops_req)

    if flag:
        return s
    else:
        return False 

def compare_versions(a, b):
    "return True if a is greater than or equal to b"
    if a:
        if six.PY3:
            if isinstance(a, bytes):
                a = a.decode('ascii')
            if isinstance(b, bytes):
                b = b.decode('ascii')
        a = distutils.version.LooseVersion(a)
        b = distutils.version.LooseVersion(b)
        return a >= b
    else:
        return False 

def checkdep_dvipng():
    try:
        s = subprocess.Popen(['dvipng','-version'], stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        stdout, stderr = s.communicate()
        line = stdout.decode('ascii').split('\n')[1]
        v = line.split()[-1]
        return v
    except (IndexError, ValueError, OSError):
        return None 

def compare_versions(a, b):
    "return True if a is greater than or equal to b"
    if a:
        a = distutils.version.LooseVersion(a)
        b = distutils.version.LooseVersion(b)
        if a>=b: return True
        else: return False
    else: return False 

def version_info(self):
        return {'backend':'TextEncoder','version':1}