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A simple cache mapping names and .dist-info paths to distributions
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Clear the cache, setting it to its initial state.
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Add a distribution to the cache.
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Represents a set of distributions installed on a path (typically sys.path).
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Create an instance from a path, optionally including legacy (distutils/
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Clears the internal cache.
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Scan the path for distributions and populate the cache with
those that are found.
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The *name* and *version* parameters are converted into their
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separating the name from the version number.
:parameter name: is converted to a standard distribution name by replacing
any runs of non- alphanumeric characters with a single
``'-'``.
:type name: string
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become dots, and all other non-alphanumeric characters
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dashes condensed to a single dash.
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Provides an iterator that looks for distributions and returns
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Looks for a named distribution on the path.
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value is expected. If nothing is found, ``None`` is returned.
:rtype: :class:`InstalledDistribution`, :class:`EggInfoDistribution`
or ``None``
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r\ t d | | f ƒ ‚ Yq` Xn xˆ | j ƒ D]z } | j } xh | D]` } t | ƒ \ } } | d k r¿ | | k rã | VPqã qƒ | | k rƒ | j | ƒ rƒ | VPqƒ qƒ Wqm Wd S( u
Iterates over all distributions to find which distributions provide *name*.
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Return the path to a resource file.
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Return all of the exported entries in a particular category.
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A base class for distributions, whether installed or from indexes.
Either way, it must have some metadata, so that's all that's needed
for construction.
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Initialise an instance.
:param metadata: The instance of :class:`Metadata` describing this
distribution.
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The source archive download URL for this distribution.
( u metadatau
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source_urlR s u Distribution.source_urlc C s d | j | j f S( uX
A utility property which displays the name and version in parentheses.
u %s (%s)( u nameu version( u self( ( u5 /tmp/pip-zej_zi-build/pip/_vendor/distlib/database.pyu name_and_version[ s u Distribution.name_and_versionc C sB | j j } d | j | j f } | | k r> | j | ƒ n | S( u
A set of distribution names and versions provided by this distribution.
:return: A set of "name (version)" strings.
u %s (%s)( u metadatau providesu nameu versionu append( u selfu plistu s( ( u5 /tmp/pip-zej_zi-build/pip/_vendor/distlib/database.pyu providesb s
u Distribution.providesc C s: t | j | ƒ } t | j j | d | j d | j ƒƒ S( Nu extrasu env( u getattru metadatau setu get_requirementsu extrasu context( u selfu req_attru reqts( ( u5 /tmp/pip-zej_zi-build/pip/_vendor/distlib/database.pyu _get_requirementsn s u Distribution._get_requirementsc C s
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Say if this instance matches (fulfills) a requirement.
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Return a textual representation of this instance,
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See if this distribution is the same as another.
:param other: The distribution to compare with. To be equal to one
another. distributions must have the same type, name,
version and source_url.
:return: True if it is the same, else False.
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Compute hash in a way which matches the equality test.
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This is the base class for installed distributions (whether PEP 376 or
legacy).
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Initialise an instance.
:param metadata: An instance of :class:`Metadata` which describes the
distribution. This will normally have been initialised
from a metadata file in the ``path``.
:param path: The path of the ``.dist-info`` or ``.egg-info``
directory for the distribution.
:param env: This is normally the :class:`DistributionPath`
instance where this distribution was found.
N( u superu BaseInstalledDistributionu __init__u pathu dist_path( u selfu metadatau pathu env( u __class__( u5 /tmp/pip-zej_zi-build/pip/_vendor/distlib/database.pyu __init__Ò s u" BaseInstalledDistribution.__init__c C s“ | d k r | j } n | d k r6 t j } d } n t t | ƒ } d | j } | | ƒ j ƒ } t j | ƒ j d ƒ j d ƒ } d | | f S( u”
Get the hash of some data, using a particular hash algorithm, if
specified.
:param data: The data to be hashed.
:type data: bytes
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or ``None``. Examples of valid values are ``'sha1'``,
``'sha224'``, ``'sha384'``, '``sha256'``, ``'md5'`` and
``'sha512'``. If no hasher is specified, the ``hasher``
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Created with the *path* of the ``.dist-info`` directory provided to the
constructor. It reads the metadata contained in ``pydist.json`` when it is
instantiated., or uses a passed in Metadata instance (useful for when
dry-run mode is being used).
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Get the list of installed files for the distribution
:return: A list of tuples of path, hash and size. Note that hash and
size might be ``None`` for some entries. The path is exactly
as stored in the file (which is as in PEP 376).
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Return the information exported by this distribution.
:return: A dictionary of exports, mapping an export category to a dict
of :class:`ExportEntry` instances describing the individual
export entries, and keyed by name.
( u get_distinfo_resourceu EXPORTS_FILENAMEu read_exports( u selfu resultu r( ( u5 /tmp/pip-zej_zi-build/pip/_vendor/distlib/database.pyu exportsE s
u InstalledDistribution.exportsc C sL i } | j t ƒ } | rH t j | j ƒ ƒ } t | ƒ } Wd QXn | S( uý
Read exports data from a file in .ini format.
:return: A dictionary of exports, mapping an export category to a list
of :class:`ExportEntry` instances describing the individual
export entries.
N( u get_distinfo_resourceu EXPORTS_FILENAMEu
contextlibu closingu as_streamu read_exports( u selfu resultu ru stream( ( u5 /tmp/pip-zej_zi-build/pip/_vendor/distlib/database.pyu read_exportsS s u" InstalledDistribution.read_exportsc
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Write a dictionary of exports to a file in .ini format.
:param exports: A dictionary of exports, mapping an export category to
a list of :class:`ExportEntry` instances describing the
individual export entries.
u wN( u get_distinfo_fileu EXPORTS_FILENAMEu openu
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NOTE: This API may change in the future.
Return the absolute path to a resource file with the given relative
path.
:param relative_path: The path, relative to .dist-info, of the resource
of interest.
:return: The absolute path where the resource is to be found.
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Iterates over the ``RECORD`` entries and returns a tuple
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:returns: iterator of (path, hash, size)
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Checks that the hashes and sizes of the files in ``RECORD`` are
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Represents a dependency graph between distributions.
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specifier, if such was provided). Also, for more efficient traversal, for
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``reverse_list[x]``. An edge from distribution ``a`` to
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dependencies are found, they are stored in ``missing``, which is a
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:parameter dists: a list of distributions
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A convenience method for making a dist given just a name and version.
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