1 files changed, 70 insertions, 0 deletions

diff --git a/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_internal/utils/packaging.py b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_internal/utils/packaging.py
new file mode 100644
index 0000000..d523953
--- /dev/null
+++ b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_internal/utils/packaging.py
@@ -0,0 +1,70 @@
+from __future__ import absolute_import

+

+import logging

+import sys

+from email.parser import FeedParser  # type: ignore

+

+from pip._vendor import pkg_resources

+from pip._vendor.packaging import specifiers, version

+

+from pip._internal import exceptions

+

+logger = logging.getLogger(__name__)

+

+

+def check_requires_python(requires_python):

+    """

+    Check if the python version in use match the `requires_python` specifier.

+

+    Returns `True` if the version of python in use matches the requirement.

+    Returns `False` if the version of python in use does not matches the

+    requirement.

+

+    Raises an InvalidSpecifier if `requires_python` have an invalid format.

+    """

+    if requires_python is None:

+        # The package provides no information

+        return True

+    requires_python_specifier = specifiers.SpecifierSet(requires_python)

+

+    # We only use major.minor.micro

+    python_version = version.parse('.'.join(map(str, sys.version_info[:3])))

+    return python_version in requires_python_specifier

+

+

+def get_metadata(dist):

+    if (isinstance(dist, pkg_resources.DistInfoDistribution) and

+            dist.has_metadata('METADATA')):

+        return dist.get_metadata('METADATA')

+    elif dist.has_metadata('PKG-INFO'):

+        return dist.get_metadata('PKG-INFO')

+

+

+def check_dist_requires_python(dist):

+    metadata = get_metadata(dist)

+    feed_parser = FeedParser()

+    feed_parser.feed(metadata)

+    pkg_info_dict = feed_parser.close()

+    requires_python = pkg_info_dict.get('Requires-Python')

+    try:

+        if not check_requires_python(requires_python):

+            raise exceptions.UnsupportedPythonVersion(

+                "%s requires Python '%s' but the running Python is %s" % (

+                    dist.project_name,

+                    requires_python,

+                    '.'.join(map(str, sys.version_info[:3])),)

+            )

+    except specifiers.InvalidSpecifier as e:

+        logger.warning(

+            "Package %s has an invalid Requires-Python entry %s - %s",

+            dist.project_name, requires_python, e,

+        )

+        return

+

+

+def get_installer(dist):

+    if dist.has_metadata('INSTALLER'):

+        for line in dist.get_metadata_lines('INSTALLER'):

+            if line.strip():

+                return line.strip()

+    return ''