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Check dependencies at runtime as declared in setup.py. #9638

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19 changes: 10 additions & 9 deletions INSTALL.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -137,19 +137,20 @@ e.g., if the header of some required library is in
Dependencies
------------

Matplotlib requires a large number of dependencies:
Matplotlib requires the following dependencies:

* `Python <https://www.python.org/downloads/>`_ (>= 3.5)
* `NumPy <http://www.numpy.org>`_ (>= |minimum_numpy_version|)
* `setuptools <https://setuptools.readthedocs.io/en/latest/>`__
* `setuptools <https://setuptools.readthedocs.io/en/latest/>`_
* `NumPy <http://www.numpy.org>`_ (>= 1.10.0)
* `cycler <http://matplotlib.org/cycler/>`_ (>= 0.10.0)
* `dateutil <https://pypi.python.org/pypi/python-dateutil>`_ (>= 2.1)
* `pyparsing <https://pyparsing.wikispaces.com/>`__
* `libpng <http://www.libpng.org>`__ (>= 1.2)
* `pytz <http://pytz.sourceforge.net/>`__
* FreeType (>= 2.3)
* `cycler <http://matplotlib.org/cycler/>`__ (>= 0.10.0)
* `six <https://pypi.python.org/pypi/six>`_
* `kiwisolver <https://github.com/nucleic/kiwi>`__ (>= 1.0.0)
* `pyparsing <https://pyparsing.wikispaces.com/>`_ (>= 2.1.7; some older
versions may work)
* `pytz <http://pytz.sourceforge.net/>`_
* `six <https://pypi.python.org/pypi/six>`_ (>= 1.10)
* `FreeType <https://www.freetype.org>`_ (>= 2.3)
* `libpng <http://www.libpng.org>`_ (>= 1.2)

Optionally, you can also install a number of packages to enable better user
interface toolkits. See :ref:`what-is-a-backend` for more details on the
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4 changes: 0 additions & 4 deletions doc/conf.py
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Expand Up @@ -323,10 +323,6 @@ def _check_deps():
# documentation
autoclass_content = 'both'

rst_epilog = """
.. |minimum_numpy_version| replace:: %s
""" % matplotlib.__version__numpy__

texinfo_documents = [
("contents", 'matplotlib', 'Matplotlib Documentation',
'John Hunter@*Darren Dale@*Eric Firing@*Michael Droettboom@*'
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88 changes: 45 additions & 43 deletions lib/matplotlib/__init__.py
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Expand Up @@ -94,15 +94,25 @@

matplotlib was initially written by John D. Hunter (1968-2012) and is now
developed and maintained by a host of others.

Occasionally the internal documentation (python docstrings) will refer
to MATLAB&reg;, a registered trademark of The MathWorks, Inc.

"""
# NOTE: This file must remain Python 2 compatible for the foreseeable future,
# to ensure that we error out properly for existing editable installs.
from __future__ import absolute_import, division, print_function

import pkg_resources

try:
pkg_resources.get_distribution("matplotlib")
except pkg_resources.DistributionNotFound:
# Running from source -- you're on your own.
pass
else:
try:
# Check that dependencies are correctly installed.
pkg_resources.require("matplotlib")
except pkg_resources.ResolutionError as e:
raise ImportError("Matplotlib requires {}".format(e.req))

import six

import sys
Expand All @@ -120,8 +130,7 @@
import atexit
from collections import MutableMapping
import contextlib
import distutils.version
import distutils.sysconfig
from distutils.version import LooseVersion
import functools
import io
import inspect
Expand All @@ -137,16 +146,39 @@
import tempfile
import warnings

if sys.version_info < (3, 5): # noqa: E402
raise ImportError("""
Matplotlib 3.0+ does not support Python 2.x, 3.0, 3.1, 3.2, 3.3, or 3.4.
Beginning with Matplotlib 3.0, Python 3.5 and above is required.

See Matplotlib `INSTALL.rst` file for more information:

https://github.com/matplotlib/matplotlib/blob/master/INSTALL.rst

""")

if sys.version_info < (3, 5): # noqa: E402
raise ImportError("""
Matplotlib 3.0+ does not support Python 2.x, 3.0, 3.1, 3.2, 3.3, or 3.4.
Beginning with Matplotlib 3.0, Python 3.5 and above is required.

See Matplotlib `INSTALL.rst` file for more information:

https://github.com/matplotlib/matplotlib/blob/master/INSTALL.rst

""")

from six.moves.urllib.request import urlopen
from six.moves import reload_module as reload

import numpy

# cbook must import matplotlib only within function
# definitions, so it is safe to import from it here.
from . import cbook
from matplotlib.cbook import (
from .cbook import (
_backports, mplDeprecation, dedent, get_label, sanitize_sequence)
from matplotlib.rcsetup import defaultParams, validate_backend, cycler

import numpy
from six.moves.urllib.request import urlopen
from six.moves import reload_module as reload
from .rcsetup import defaultParams, validate_backend, cycler

# Get the version from the _version.py versioneer file. For a git checkout,
# this is computed based on the number of commits since the last tag.
Expand Down Expand Up @@ -191,41 +223,11 @@ def compare_versions(a, b):
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
return LooseVersion(a) >= LooseVersion(b)
else:
return False


try:
import dateutil
except ImportError:
raise ImportError("Matplotlib requires dateutil")


if not compare_versions(six.__version__, '1.10'):
raise ImportError(
"Matplotlib requires six>=1.10; you have %s" % six.__version__)


try:
import pyparsing
except ImportError:
raise ImportError("Matplotlib requires pyparsing")
else:
if not compare_versions(pyparsing.__version__, '2.0.1'):
raise ImportError(
"Matplotlib requires pyparsing>=2.0.1; you have %s"
% pyparsing.__version__)


if not compare_versions(numpy.__version__, __version__numpy__):
raise ImportError(
"Matplotlib requires numpy>=%s; you have %s" % (
__version__numpy__, numpy.__version__))


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

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16 changes: 3 additions & 13 deletions setupext.py
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Expand Up @@ -107,18 +107,6 @@ def get_win32_compiler():
win32_compiler = get_win32_compiler()


def extract_versions():
"""
Extracts version values from the main matplotlib __init__.py and
returns them as a dictionary.
"""
with open('lib/matplotlib/__init__.py') as fd:
for line in fd.readlines():
if (line.startswith('__version__numpy__')):
exec(line.strip())
return locals()


def has_include_file(include_dirs, filename):
"""
Returns `True` if `filename` can be found in one of the
Expand Down Expand Up @@ -925,7 +913,8 @@ def include_dirs_hook():
return [numpy.get_include()]

def check(self):
min_version = extract_versions()['__version__numpy__']
# Remember to keep the version in INSTALL.rst in sync.
min_version = "1.7.1"
try:
import numpy
except ImportError:
Expand Down Expand Up @@ -1391,6 +1380,7 @@ def check(self):
return "handled by setuptools"

def get_install_requires(self):
# Remember to keep the list in INSTALL.rst in sync.
install_requires = [
"cycler>=0.10",
"pyparsing>=2.0.1,!=2.0.4,!=2.1.2,!=2.1.6",
Expand Down