FM / matplotlib

/usr/lib64/python2.6/site-packages/matplotlib/

/usr/lib64/python2.6/site-packages/matplotlib

Name	Size	Mode	Actions
backends/	-	0755	rm
delaunay/	-	0755	rm
mpl-data/	-	0755	rm
numerix/	-	0755	rm
projections/	-	0755	rm
sphinxext/	-	0755	rm
afm.py	15089	0644	edit dl rm
afm.pyc	16959	0644	edit dl rm
afm.pyo	16959	0644	edit dl rm
artist.py	35623	0644	edit dl rm
artist.pyc	40326	0644	edit dl rm
artist.pyo	40326	0644	edit dl rm
axes.py	280089	0644	edit dl rm
axes.pyc	249396	0644	edit dl rm
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axis.py	57354	0644	edit dl rm
axis.pyc	58973	0644	edit dl rm
axis.pyo	58666	0644	edit dl rm
backend_bases.py	72318	0644	edit dl rm
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backend_bases.pyo	77877	0644	edit dl rm
bezier.py	14917	0644	edit dl rm
bezier.pyc	13526	0644	edit dl rm
bezier.pyo	13526	0644	edit dl rm
blocking_input.py	13690	0644	edit dl rm
blocking_input.pyc	14346	0644	edit dl rm
blocking_input.pyo	14028	0644	edit dl rm
cbook.py	42756	0644	edit dl rm
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cbook.pyo	56529	0644	edit dl rm
cm.py	8098	0644	edit dl rm
cm.pyc	9772	0644	edit dl rm
cm.pyo	9772	0644	edit dl rm
collections.py	40784	0644	edit dl rm
collections.pyc	44006	0644	edit dl rm
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colorbar.py	27456	0644	edit dl rm
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colors.py	39110	0644	edit dl rm
colors.pyc	40079	0644	edit dl rm
colors.pyo	40079	0644	edit dl rm
contour.py	42895	0644	edit dl rm
contour.pyc	36099	0644	edit dl rm
contour.pyo	35937	0644	edit dl rm
dates.py	36007	0755	edit dl rm
dates.pyc	40017	0644	edit dl rm
dates.pyo	39953	0644	edit dl rm
dviread.py	32033	0644	edit dl rm
dviread.pyc	34682	0644	edit dl rm
dviread.pyo	34539	0644	edit dl rm
figure.py	41264	0644	edit dl rm
figure.pyc	42939	0644	edit dl rm
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finance.py	20582	0644	edit dl rm
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fontconfig_pattern.py	6429	0644	edit dl rm
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fontconfig_pattern.pyo	6519	0644	edit dl rm
font_manager.py	42653	0644	edit dl rm
font_manager.pyc	40456	0644	edit dl rm
font_manager.pyo	40456	0644	edit dl rm
ft2font.so	306168	0775	edit dl rm
hatch.py	6564	0644	edit dl rm
hatch.pyc	9120	0644	edit dl rm
hatch.pyo	9120	0644	edit dl rm
image.py	31540	0644	edit dl rm
image.pyc	33042	0644	edit dl rm
image.pyo	32996	0644	edit dl rm
legend.py	32302	0644	edit dl rm
legend.pyc	23551	0644	edit dl rm
legend.pyo	23378	0644	edit dl rm
lines.py	54685	0644	edit dl rm
lines.pyc	56431	0644	edit dl rm
lines.pyo	56326	0644	edit dl rm
mathtext.py	102009	0644	edit dl rm
mathtext.pyc	103067	0644	edit dl rm
mathtext.pyo	102679	0644	edit dl rm
mlab.py	94294	0644	edit dl rm
mlab.pyc	100004	0644	edit dl rm
mlab.pyo	99824	0644	edit dl rm
mpl.py	785	0644	edit dl rm
mpl.pyc	1176	0644	edit dl rm
mpl.pyo	1176	0644	edit dl rm
nxutils.so	9512	0775	edit dl rm
offsetbox.py	29807	0644	edit dl rm
offsetbox.pyc	33889	0644	edit dl rm
offsetbox.pyo	33834	0644	edit dl rm
patches.py	128485	0644	edit dl rm
patches.pyc	130148	0644	edit dl rm
patches.pyo	130010	0644	edit dl rm
path.py	21765	0644	edit dl rm
path.pyc	21174	0644	edit dl rm
path.pyo	20954	0644	edit dl rm
pylab.py	10981	0644	edit dl rm
pylab.pyc	12399	0644	edit dl rm
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pyparsing.py	143924	0644	edit dl rm
pyparsing.pyc	146737	0644	edit dl rm
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pyplot.py	82468	0644	edit dl rm
pyplot.pyc	80279	0644	edit dl rm
pyplot.pyo	80279	0644	edit dl rm
quiver.py	37540	0644	edit dl rm
quiver.pyc	33788	0644	edit dl rm
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rcsetup.py	23434	0644	edit dl rm
rcsetup.pyc	21119	0644	edit dl rm
rcsetup.pyo	20949	0644	edit dl rm
scale.py	14233	0644	edit dl rm
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spines.py	12684	0644	edit dl rm
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table.py	16828	0644	edit dl rm
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texmanager.py	22464	0644	edit dl rm
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texmanager.pyo	19962	0644	edit dl rm
text.py	59822	0644	edit dl rm
text.pyc	59240	0644	edit dl rm
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ticker.py	40428	0644	edit dl rm
ticker.pyc	50461	0644	edit dl rm
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tight_bbox.py	3655	0644	edit dl rm
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transforms.py	75387	0644	edit dl rm
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transforms.pyo	88702	0644	edit dl rm
ttconv.so	65360	0775	edit dl rm
type1font.py	11537	0644	edit dl rm
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units.py	4976	0644	edit dl rm
units.pyc	5775	0644	edit dl rm
units.pyo	5775	0644	edit dl rm
widgets.py	40833	0644	edit dl rm
widgets.pyc	42568	0644	edit dl rm
widgets.pyo	42382	0644	edit dl rm
windowing.py	454	0644	edit dl rm
windowing.pyc	1283	0644	edit dl rm
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_cm.py	370414	0644	edit dl rm
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_cm.pyo	103042	0644	edit dl rm
_cntr.so	21184	0775	edit dl rm
_delaunay.so	61120	0775	edit dl rm
_image.so	282248	0775	edit dl rm
_mathtext_data.py	57990	0644	edit dl rm
_mathtext_data.pyc	63787	0644	edit dl rm
_mathtext_data.pyo	63787	0644	edit dl rm
_path.so	279992	0775	edit dl rm
_png.so	156472	0775	edit dl rm
_pylab_helpers.py	2715	0644	edit dl rm
_pylab_helpers.pyc	3708	0644	edit dl rm
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__init__.py	28972	0644	edit dl rm
__init__.pyc	28980	0644	edit dl rm
__init__.pyo	28926	0644	edit dl rm

Edit: /usr/lib64/python2.6/site-packages/matplotlib/__init__.py (28972B)

"""
This is an object-orient plotting library.

A procedural interface is provided by the companion pylab module,
which may be imported directly, e.g::

from pylab import *

or using ipython::

ipython -pylab

For the most part, direct use of the object-oriented library is
encouraged when programming rather than working interactively.  The
exceptions are the pylab commands :func:`~matplotlib.pyplot.figure`,
:func:`~matplotlib.pyplot.subplot`,
:func:`~matplotlib.backends.backend_qt4agg.show`, and
:func:`~pyplot.savefig`, which can greatly simplify scripting.

Modules include:

:mod:`matplotlib.axes`
        defines the :class:`~matplotlib.axes.Axes` class.  Most pylab
        commands are wrappers for :class:`~matplotlib.axes.Axes`
        methods.  The axes module is the highest level of OO access to
        the library.

:mod:`matplotlib.figure`
        defines the :class:`~matplotlib.figure.Figure` class.

:mod:`matplotlib.artist`
        defines the :class:`~matplotlib.artist.Artist` base class for
        all classes that draw things.

:mod:`matplotlib.lines`
        defines the :class:`~matplotlib.lines.Line2D` class for
        drawing lines and markers

:mod:`matplotlib.patches`
        defines classes for drawing polygons

:mod:`matplotlib.text`
        defines the :class:`~matplotlib.text.Text`,
        :class:`~matplotlib.text.TextWithDash`, and
        :class:`~matplotlib.text.Annotate` classes

:mod:`matplotlib.image`
        defines the :class:`~matplotlib.image.AxesImage` and
        :class:`~matplotlib.image.FigureImage` classes

:mod:`matplotlib.collections`
        classes for efficient drawing of groups of lines or polygons

:mod:`matplotlib.colors`
        classes for interpreting color specifications and for making
        colormaps

:mod:`matplotlib.cm`
        colormaps and the :class:`~matplotlib.image.ScalarMappable`
        mixin class for providing color mapping functionality to other
        classes

:mod:`matplotlib.ticker`
        classes for calculating tick mark locations and for formatting
        tick labels

:mod:`matplotlib.backends`
        a subpackage with modules for various gui libraries and output
        formats

The base matplotlib namespace includes:

:data:`~matplotlib.rcParams`
        a global dictionary of default configuration settings.  It is
        initialized by code which may be overridded by a matplotlibrc
        file.

:func:`~matplotlib.rc`
        a function for setting groups of rcParams values

:func:`~matplotlib.use`
        a function for setting the matplotlib backend.  If used, this
        function must be called immediately after importing matplotlib
        for the first time.  In particular, it must be called
        **before** importing pylab (if pylab is imported).

matplotlib is written by John D. Hunter (jdh2358 at gmail.com) and a
host of others.
"""
from __future__ import generators

__version__  = '0.99.1.1'
__revision__ = '$Revision: 7813 $'
__date__     = '$Date: 2009-09-21 12:12:47 -0500 (Mon, 21 Sep 2009) $'

import os, re, shutil, subprocess, sys, warnings
import distutils.sysconfig
import distutils.version

NEWCONFIG = False

# Needed for toolkit setuptools support
if 0:
    try:
        __import__('pkg_resources').declare_namespace(__name__)
    except ImportError:
        pass # must not have setuptools

if not hasattr(sys, 'argv'):  # for modpython
    sys.argv = ['modpython']

"""
Manage user customizations through a rc file.

The default file location is given in the following order

- environment variable MATPLOTLIBRC

- HOME/.matplotlib/matplotlibrc if HOME is defined

- PATH/matplotlibrc where PATH is the return value of
    get_data_path()
"""

import sys, os, tempfile

from rcsetup import defaultParams, validate_backend, validate_toolbar
from rcsetup import validate_cairo_format

major, minor1, minor2, s, tmp = sys.version_info
_python24 = major>=2 and minor1>=4

# the havedate check was a legacy from old matplotlib which preceeded
# datetime support
_havedate = True

#try:
#    import pkg_resources # pkg_resources is part of setuptools
#except ImportError: _have_pkg_resources = False
#else: _have_pkg_resources = True

if not _python24:
    raise ImportError('matplotlib requires Python 2.4 or later')

import numpy
nn = numpy.__version__.split('.')
if not (int(nn[0]) >= 1 and int(nn[1]) >= 1):
    raise ImportError(
            'numpy 1.1 or later is required; you have %s' % numpy.__version__)

def is_string_like(obj):
    if hasattr(obj, 'shape'): return 0
    try: obj + ''
    except (TypeError, ValueError): return 0
    return 1

def _is_writable_dir(p):
    """
    p is a string pointing to a putative writable dir -- return True p
    is such a string, else False
    """
    try: p + ''  # test is string like
    except TypeError: return False
    try:
        t = tempfile.TemporaryFile(dir=p)
        t.write('1')
        t.close()
    except OSError: return False
    else: return True

class Verbose:
    """
    A class to handle reporting.  Set the fileo attribute to any file
    instance to handle the output.  Default is sys.stdout
    """
    levels = ('silent', 'helpful', 'debug', 'debug-annoying')
    vald = dict( [(level, i) for i,level in enumerate(levels)])

# parse the verbosity from the command line; flags look like
    # --verbose-silent or --verbose-helpful
    _commandLineVerbose = None

for arg in sys.argv[1:]:
        if not arg.startswith('--verbose-'): continue
        _commandLineVerbose = arg[10:]

def __init__(self):
        self.set_level('silent')
        self.fileo = sys.stdout

def set_level(self, level):
        'set the verbosity to one of the Verbose.levels strings'

if self._commandLineVerbose is not None:
            level = self._commandLineVerbose
        if level not in self.levels:
            raise ValueError('Illegal verbose string "%s".  Legal values are %s'%(level, self.levels))
        self.level = level

def set_fileo(self, fname):
        std = {
            'sys.stdout': sys.stdout,
            'sys.stderr': sys.stderr,
        }
        if fname in std:
            self.fileo = std[fname]
        else:
            try:
                fileo = file(fname, 'w')
            except IOError:
                raise ValueError('Verbose object could not open log file "%s" for writing.\nCheck your matplotlibrc verbose.fileo setting'%fname)
            else:
                self.fileo = fileo

def report(self, s, level='helpful'):
        """
        print message s to self.fileo if self.level>=level.  Return
        value indicates whether a message was issued

"""
        if self.ge(level):
            print >>self.fileo, s
            return True
        return False

def wrap(self, fmt, func, level='helpful', always=True):
        """
        return a callable function that wraps func and reports it
        output through the verbose handler if current verbosity level
        is higher than level

if always is True, the report will occur on every function
        call; otherwise only on the first time the function is called
        """
        assert callable(func)
        def wrapper(*args, **kwargs):
            ret = func(*args, **kwargs)

if (always or not wrapper._spoke):
                spoke = self.report(fmt%ret, level)
                if not wrapper._spoke: wrapper._spoke = spoke
            return ret
        wrapper._spoke = False
        wrapper.__doc__ = func.__doc__
        return wrapper

def ge(self, level):
        'return true if self.level is >= level'
        return self.vald[self.level]>=self.vald[level]

verbose=Verbose()

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

def checkdep_ghostscript():
    try:
        if sys.platform == 'win32':
            command_args = ['gswin32c', '--version']
        else:
            command_args = ['gs', '--version']
        s = subprocess.Popen(command_args, stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        v = s.stdout.read()[:-1]
        return v
    except (IndexError, ValueError, OSError):
        return None

def checkdep_tex():
    try:
        s = subprocess.Popen(['tex','-version'], stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        line = s.stdout.readlines()[0]
        pattern = '3\.1\d+'
        match = re.search(pattern, line)
        v = match.group(0)
        return v
    except (IndexError, ValueError, AttributeError, OSError):
        return None

def checkdep_pdftops():
    try:
        s = subprocess.Popen(['pdftops','-v'], stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        for line in s.stderr:
            if 'version' in line:
                v = line.split()[-1]
        return v
    except (IndexError, ValueError, UnboundLocalError, 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 checkdep_ps_distiller(s):
    if not s:
        return False

flag = True
    gs_req = '7.07'
    gs_sugg = '7.07'
    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 checkdep_usetex(s):
    if not s:
        return False

tex_req = '3.1415'
    gs_req = '7.07'
    gs_sugg = '7.07'
    dvipng_req = '1.5'
    flag = True

tex_v = checkdep_tex()
    if compare_versions(tex_v, tex_req): pass
    else:
        flag = False
        warnings.warn(('matplotlibrc text.usetex option can not be used '
                       'unless TeX-%s or later is '
                       'installed on your system') % tex_req)

dvipng_v = checkdep_dvipng()
    if compare_versions(dvipng_v, dvipng_req): pass
    else:
        flag = False
        warnings.warn( 'matplotlibrc text.usetex can not be used with *Agg '
                       'backend unless dvipng-1.5 or later is '
                       'installed on your system')

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 for use with the text.usetex '
                        'option.') % (gs_v, gs_sugg))
    else:
        flag = False
        warnings.warn(('matplotlibrc text.usetex can not be used '
                       'unless ghostscript-%s or later is '
                       'installed on your system') % gs_req)

return flag

def _get_home():
    """Find user's home directory if possible.
    Otherwise raise error.

:see:  http://mail.python.org/pipermail/python-list/2005-February/263921.html
    """
    path=''
    try:
        path=os.path.expanduser("~")
    except:
        pass
    if not os.path.isdir(path):
        for evar in ('HOME', 'USERPROFILE', 'TMP'):
            try:
                path = os.environ[evar]
                if os.path.isdir(path):
                    break
            except: pass
    if path:
        return path
    else:
        raise RuntimeError('please define environment variable $HOME')

get_home = verbose.wrap('$HOME=%s', _get_home, always=False)

def _get_configdir():
    """
    Return the string representing the configuration dir.

default is HOME/.matplotlib.  you can override this with the
    MPLCONFIGDIR environment variable
    """

configdir = os.environ.get('MPLCONFIGDIR')
    if configdir is not None:
        if not _is_writable_dir(configdir):
            raise RuntimeError('Could not write to MPLCONFIGDIR="%s"'%configdir)
        return configdir

h = get_home()
    p = os.path.join(get_home(), '.matplotlib')

if os.path.exists(p):
        if not _is_writable_dir(p):
            raise RuntimeError("'%s' is not a writable dir; you must set %s/.matplotlib to be a writable dir.  You can also set environment variable MPLCONFIGDIR to any writable directory where you want matplotlib data stored "% (h, h))
    else:
        if not _is_writable_dir(h):
            raise RuntimeError("Failed to create %s/.matplotlib; consider setting MPLCONFIGDIR to a writable directory for matplotlib configuration data"%h)

os.mkdir(p)

return p
get_configdir = verbose.wrap('CONFIGDIR=%s', _get_configdir, always=False)

def _get_data_path():
    'get the path to matplotlib data'

if 'MATPLOTLIBDATA' in os.environ:
        path = os.environ['MATPLOTLIBDATA']
        if not os.path.isdir(path):
            raise RuntimeError('Path in environment MATPLOTLIBDATA not a directory')
        return path

path = os.sep.join([os.path.dirname(__file__), 'mpl-data'])
    if os.path.isdir(path): return path

# setuptools' namespace_packages may highjack this init file
    # so need to try something known to be in matplotlib, not basemap
    import matplotlib.afm
    path = os.sep.join([os.path.dirname(matplotlib.afm.__file__), 'mpl-data'])
    if os.path.isdir(path): return path

# py2exe zips pure python, so still need special check
    if getattr(sys,'frozen',None):
        path = os.path.join(os.path.split(sys.path[0])[0], 'mpl-data')
        if os.path.isdir(path): return path
        else:
            # Try again assuming we need to step up one more directory
            path = os.path.join(os.path.split(os.path.split(sys.path[0])[0])[0],
                                'mpl-data')
        if os.path.isdir(path): return path
        else:
            # Try again assuming sys.path[0] is a dir not a exe
            path = os.path.join(sys.path[0], 'mpl-data')
            if os.path.isdir(path): return path

raise RuntimeError('Could not find the matplotlib data files')

def _get_data_path_cached():
    if defaultParams['datapath'][0] is None:
        defaultParams['datapath'][0] = _get_data_path()
    return defaultParams['datapath'][0]

get_data_path = verbose.wrap('matplotlib data path %s', _get_data_path_cached,
                             always=False)

def get_example_data(fname):
    """
    return a filehandle to one of the example files in mpl-data/example

*fname*
        the name of one of the files in mpl-data/example
    """
    datadir = os.path.join(get_data_path(), 'example')
    fullpath = os.path.join(datadir, fname)
    if not os.path.exists(fullpath):
        raise IOError('could not find matplotlib example file "%s" in data directory "%s"'%(
            fname, datadir))
    return file(fullpath, 'rb')

def get_py2exe_datafiles():
    datapath = get_data_path()
    head, tail = os.path.split(datapath)
    d = {}
    for root, dirs, 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 d.items()

def matplotlib_fname():
    """
    Return the path to the rc file

Search order:

* current working dir
     * environ var MATPLOTLIBRC
     * HOME/.matplotlib/matplotlibrc
     * MATPLOTLIBDATA/matplotlibrc

"""

oldname = os.path.join( os.getcwd(), '.matplotlibrc')
    if os.path.exists(oldname):
        print >> sys.stderr, """\
WARNING: Old rc filename ".matplotlibrc" found in working dir
  and and renamed to new default rc file name "matplotlibrc"
  (no leading"dot"). """
        shutil.move('.matplotlibrc', 'matplotlibrc')

home = get_home()
    oldname = os.path.join( home, '.matplotlibrc')
    if os.path.exists(oldname):
        configdir = get_configdir()
        newname = os.path.join(configdir, 'matplotlibrc')
        print >> sys.stderr, """\
WARNING: Old rc filename "%s" found and renamed to
  new default rc file name "%s"."""%(oldname, newname)

shutil.move(oldname, newname)

fname = os.path.join( os.getcwd(), 'matplotlibrc')
    if os.path.exists(fname): return fname

if 'MATPLOTLIBRC' in os.environ:
        path =  os.environ['MATPLOTLIBRC']
        if os.path.exists(path):
            fname = os.path.join(path, 'matplotlibrc')
            if os.path.exists(fname):
                return fname

fname = os.path.join(get_configdir(), 'matplotlibrc')
    if os.path.exists(fname): return fname

path =  get_data_path() # guaranteed to exist or raise
    fname = os.path.join(path, 'matplotlibrc')
    if not os.path.exists(fname):
        warnings.warn('Could not find matplotlibrc; using defaults')
    return fname

_deprecated_map = {
    'text.fontstyle':   'font.style',
    'text.fontangle':   'font.style',
    'text.fontvariant': 'font.variant',
    'text.fontweight':  'font.weight',
    'text.fontsize':    'font.size',
    'tick.size' :       'tick.major.size',
    }

_deprecated_ignore_map = {
    'legend.pad' :       'legend.borderpad',
    'legend.labelsep' :       'legend.labelspacing',
    'legend.handlelen' :       'legend.handlelength',
    'legend.handletextsep' :       'legend.handletextpad',
    'legend.axespad' :       'legend.borderaxespad',
    }

class RcParams(dict):

"""
    A dictionary object including validation

validating functions are defined and associated with rc parameters in
    :mod:`matplotlib.rcsetup`
    """

validate = dict([ (key, converter) for key, (default, converter) in \
                     defaultParams.iteritems() ])

def __setitem__(self, key, val):
        try:
            if key in _deprecated_map.keys():
                alt = _deprecated_map[key]
                warnings.warn('%s is deprecated in matplotlibrc. Use %s \
instead.'% (key, alt))
                key = alt
            elif key in _deprecated_ignore_map:
                alt = _deprecated_ignore_map[key]
                warnings.warn('%s is deprecated. Use %s instead.'% (key, alt))
                return
            cval = self.validate[key](val)
            dict.__setitem__(self, key, cval)
        except KeyError:
            raise KeyError('%s is not a valid rc parameter.\
See rcParams.keys() for a list of valid parameters.'%key)

def rc_params(fail_on_error=False):
    'Return the default params updated from the values in the rc file'

fname = matplotlib_fname()
    if not os.path.exists(fname):
        # this should never happen, default in mpl-data should always be found
        message = 'could not find rc file; returning defaults'
        ret = RcParams([ (key, default) for key, (default, converter) in \
                        defaultParams.iteritems() ])
        warnings.warn(message)
        return ret

cnt = 0
    rc_temp = {}
    for line in file(fname):
        cnt += 1
        strippedline = line.split('#',1)[0].strip()
        if not strippedline: continue
        tup = strippedline.split(':',1)
        if len(tup) !=2:
            warnings.warn('Illegal line #%d\n\t%s\n\tin file "%s"'%\
                          (cnt, line, fname))
            continue
        key, val = tup
        key = key.strip()
        val = val.strip()
        if key in rc_temp:
            warnings.warn('Duplicate key in file "%s", line #%d'%(fname,cnt))
        rc_temp[key] = (val, line, cnt)

ret = RcParams([ (key, default) for key, (default, converter) in \
                    defaultParams.iteritems() ])

for key in ('verbose.level', 'verbose.fileo'):
        if key in rc_temp:
            val, line, cnt = rc_temp.pop(key)
            if fail_on_error:
                ret[key] = val # try to convert to proper type or raise
            else:
                try: ret[key] = val # try to convert to proper type or skip
                except Exception, msg:
                    warnings.warn('Bad val "%s" on line #%d\n\t"%s"\n\tin file \
"%s"\n\t%s' % (val, cnt, line, fname, msg))

verbose.set_level(ret['verbose.level'])
    verbose.set_fileo(ret['verbose.fileo'])

for key, (val, line, cnt) in rc_temp.iteritems():
        if key in defaultParams:
            if fail_on_error:
                ret[key] = val # try to convert to proper type or raise
            else:
                try: ret[key] = val # try to convert to proper type or skip
                except Exception, msg:
                    warnings.warn('Bad val "%s" on line #%d\n\t"%s"\n\tin file \
"%s"\n\t%s' % (val, cnt, line, fname, msg))
        elif key in _deprecated_ignore_map:
            warnings.warn('%s is deprecated. Update your matplotlibrc to use %s instead.'% (key, _deprecated_ignore_map[key]))

else:
            print >> sys.stderr, """
Bad key "%s" on line %d in
%s.
You probably need to get an updated matplotlibrc file from
http://matplotlib.sf.net/_static/matplotlibrc or from the matplotlib source
distribution""" % (key, cnt, fname)

if ret['datapath'] is None:
        ret['datapath'] = get_data_path()

if not ret['text.latex.preamble'] == ['']:
        verbose.report("""
*****************************************************************
You have the following UNSUPPORTED LaTeX preamble customizations:
%s
Please do not ask for support with these customizations active.
*****************************************************************
"""% '\n'.join(ret['text.latex.preamble']), 'helpful')

verbose.report('loaded rc file %s'%fname)

return ret

# this is the instance used by the matplotlib classes
rcParams = rc_params()

rcParamsDefault = RcParams([ (key, default) for key, (default, converter) in \
                    defaultParams.iteritems() ])

rcParams['ps.usedistiller'] = checkdep_ps_distiller(rcParams['ps.usedistiller'])
rcParams['text.usetex'] = checkdep_usetex(rcParams['text.usetex'])

def rc(group, **kwargs):
    """
    Set the current rc params.  Group is the grouping for the rc, eg.
    for ``lines.linewidth`` the group is ``lines``, for
    ``axes.facecolor``, the group is ``axes``, and so on.  Group may
    also be a list or tuple of group names, eg. (*xtick*, *ytick*).
    *kwargs* is a dictionary attribute name/value pairs, eg::

rc('lines', linewidth=2, color='r')

sets the current rc params and is equivalent to::

rcParams['lines.linewidth'] = 2
      rcParams['lines.color'] = 'r'

The following aliases are available to save typing for interactive
    users:

=====   =================
    Alias   Property
    =====   =================
    'lw'    'linewidth'
    'ls'    'linestyle'
    'c'     'color'
    'fc'    'facecolor'
    'ec'    'edgecolor'
    'mew'   'markeredgewidth'
    'aa'    'antialiased'
    =====   =================

Thus you could abbreviate the above rc command as::

rc('lines', lw=2, c='r')

Note you can use python's kwargs dictionary facility to store
    dictionaries of default parameters.  Eg, you can customize the
    font rc as follows::

font = {'family' : 'monospace',
              'weight' : 'bold',
              'size'   : 'larger'}

rc('font', **font)  # pass in the font dict as kwargs

This enables you to easily switch between several configurations.
    Use :func:`~matplotlib.pyplot.rcdefaults` to restore the default
    rc params after changes.
    """

aliases = {
        'lw'  : 'linewidth',
        'ls'  : 'linestyle',
        'c'   : 'color',
        'fc'  : 'facecolor',
        'ec'  : 'edgecolor',
        'mew' : 'markeredgewidth',
        'aa'  : 'antialiased',
        }

if is_string_like(group):
        group = (group,)
    for g in group:
        for k,v in kwargs.items():
            name = aliases.get(k) or k
            key = '%s.%s' % (g, name)
            if key not in rcParams:
                raise KeyError('Unrecognized key "%s" for group "%s" and name "%s"' %
                               (key, g, name))

rcParams[key] = v

def rcdefaults():
    """
    Restore the default rc params - the ones that were created at
    matplotlib load time.
    """
    rcParams.update(rcParamsDefault)

if NEWCONFIG:
    #print "importing from reorganized config system!"
    try:
        from config import rcParams, rcdefaults, mplConfig, save_config
        verbose.set_level(rcParams['verbose.level'])
        verbose.set_fileo(rcParams['verbose.fileo'])
    except:
        from config import rcParams, rcdefaults

_use_error_msg = """ This call to matplotlib.use() has no effect
because the the backend has already been chosen;
matplotlib.use() must be called *before* pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.
"""

def use(arg, warn=True):
    """
    Set the matplotlib backend to one of the known backends.

The argument is case-insensitive.  For the Cairo backend,
    the argument can have an extension to indicate the type of
    output.  Example:

use('cairo.pdf')

will specify a default of pdf output generated by Cairo.

Note: this function must be called *before* importing pylab for
    the first time; or, if you are not using pylab, it must be called
    before importing matplotlib.backends.  If warn is True, a warning
    is issued if you try and callthis after pylab or pyplot have been
    loaded.  In certain black magic use cases, eg
    pyplot.switch_backends, we are doing the reloading necessary to
    make the backend switch work (in some cases, eg pure image
    backends) so one can set warn=False to supporess the warnings
    """
    if 'matplotlib.backends' in sys.modules:
        if warn: warnings.warn(_use_error_msg)
        return
    arg = arg.lower()
    if arg.startswith('module://'):
        name = arg
    else:
        be_parts = arg.split('.')
        name = validate_backend(be_parts[0])
        if len(be_parts) > 1:
            if name == 'cairo':
                rcParams['cairo.format'] = validate_cairo_format(be_parts[1])
            else:
                raise ValueError('Only cairo backend has a format option')
    rcParams['backend'] = name

def get_backend():
    "Returns the current backend"
    return rcParams['backend']

def interactive(b):
    """
    Set interactive mode to boolean b.

If b is True, then draw after every plotting command, eg, after xlabel
    """
    rcParams['interactive'] = b

def is_interactive():
    'Return true if plot mode is interactive'
    b = rcParams['interactive']
    return b

def tk_window_focus():
    """Return true if focus maintenance under TkAgg on win32 is on.
     This currently works only for python.exe and IPython.exe.
     Both IDLE and Pythonwin.exe fail badly when tk_window_focus is on."""
    if rcParams['backend'] != 'TkAgg':
        return False
    return rcParams['tk.window_focus']

# Now allow command line to override

# Allow command line access to the backend with -d (matlab compatible
# flag)

for s in sys.argv[1:]:
    if s.startswith('-d') and len(s) > 2:  # look for a -d flag
        try:
            use(s[2:])
        except (KeyError, ValueError):
            pass
        # we don't want to assume all -d flags are backends, eg -debug

verbose.report('matplotlib version %s'%__version__)
verbose.report('verbose.level %s'%verbose.level)
verbose.report('interactive is %s'%rcParams['interactive'])
verbose.report('units is %s'%rcParams['units'])
verbose.report('platform is %s'%sys.platform)
verbose.report('loaded modules: %s'%sys.modules.keys(), 'debug')

cmd: