def __init__(self, req, comes_from, source_dir=None, editable=False,
link=None, as_egg=False, update=True,
pycompile=True, markers=None, isolated=False, options=None,
wheel_cache=None, constraint=False):
self.extras = ()
if isinstance(req, six.string_types):
try:
req = pkg_resources.Requirement.parse(req)
except pkg_resources.RequirementParseError:
if os.path.sep in req:
add_msg = "It looks like a path. Does it exist ?"
elif '=' in req and not any(op in req for op in operators):
add_msg = "= is not a valid operator. Did you mean == ?"
else:
add_msg = traceback.format_exc()
raise InstallationError(
"Invalid requirement: '%s'\n%s" % (req, add_msg))
self.extras = req.extras
self.req = req
self.comes_from = comes_from
self.constraint = constraint
self.source_dir = source_dir
self.editable = editable
self._wheel_cache = wheel_cache
self.link = self.original_link = link
self.as_egg = as_egg
self.markers = markers
self._egg_info_path = None
# This holds the pkg_resources.Distribution object if this requirement
# is already available:
self.satisfied_by = None
# This hold the pkg_resources.Distribution object if this requirement
# conflicts with another installed distribution:
self.conflicts_with = None
# Temporary build location
self._temp_build_dir = None
# Used to store the global directory where the _temp_build_dir should
# have been created. Cf _correct_build_location method.
self._ideal_build_dir = None
# True if the editable should be updated:
self.update = update
# Set to True after successful installation
self.install_succeeded = None
# UninstallPathSet of uninstalled distribution (for possible rollback)
self.uninstalled = None
# Set True if a legitimate do-nothing-on-uninstall has happened - e.g.
# system site packages, stdlib packages.
self.nothing_to_uninstall = False
self.use_user_site = False
self.target_dir = None
self.options = options if options else {}
self.pycompile = pycompile
# Set to True after successful preparation of this requirement
self.prepared = False
self.isolated = isolated
评论列表
文章目录
