PEP 610 Parser¶

A parser for PEP 610 direct URL metadata.

Release v0.6.0.

Python 3.10+

from importlib import metadata

import pep610

dist = metadata.distribution("pep610")

match data := pep610.read_from_distribution(dist):
    case pep610.DirectUrl(url, pep610.DirInfo(editable=True)):
        print("Editable installation, a.k.a. in development mode")
    case _:
        print("Not an editable installation")

Python 3.8+

from importlib import metadata

import pep610

dist = metadata.distribution("pep610")

if (
    (data := pep610.read_from_distribution(dist))
    and isinstance(data, pep610.DirectUrl)
    and isinstance(data.info, pep610.DirInfo)
    and data.info.is_editable()
):
    print("Editable installation, a.k.a. in development mode")
else:
    print("Not an editable installation")

It can also be used to parse the direct URL download info in pip’s Installation Report:

import json
import subprocess

import pep610

report = json.loads(
    subprocess.run(
        [
            "pip",
            "install",
            "--quiet",
            "--report",
            "-",
            "--dry-run",
            "git+https://github.com/pypa/packaging@main",
        ],
        capture_output=True,
        text=True,
    ).stdout
)

for package in report["install"]:
    if package["is_direct"]:
        data = pep610.parse(package["download_info"])
        print(data)

Direct URL Data class¶

class pep610.DirectUrl(url, info, subdirectory=None)¶

Direct URL data.

Parameters:

url (str) – The direct URL.
info (VCSInfo | ArchiveInfo | DirInfo) – The direct URL data.
subdirectory (str | None) – The optional directory path, relative to the root of the VCS repository, source archive or local directory, to specify where pyproject.toml or setup.py is located.

to_dict()¶

Convert the data to a dictionary.

Returns:: The data as a dictionary.
Return type:: DirectUrlDict

>>> direct_url = DirectUrl(
...     url="file:///home/user/pep610",
...     info=DirInfo(editable=False),
...     subdirectory="app",
... )
>>> direct_url.to_dict()
{'url': 'file:///home/user/pep610', 'subdirectory': 'app', 'dir_info': {'editable': False}}

to_json()¶

Convert the data to a JSON string.

Returns:: The data as a JSON string.
Return type:: str

>>> direct_url = DirectUrl(
...     url="file:///home/user/pep610",
...     info=DirInfo(editable=False),
...     subdirectory="app",
... )
>>> direct_url.to_json()
'{"dir_info": {"editable": false}, "subdirectory": "app", "url": "file:///home/user/pep610"}'

Supported direct URL formats¶

class pep610.ArchiveInfo(hashes=None, hash=None)¶

Archive information.

See the Archive URLs specification.

Parameters:

hashes (dict[str, str] | None) –
Dictionary mapping a hash name to a hex encoded digest of the file.

Any hash algorithm available via hashlib (specifically any that can be passed to hashlib.new() and do not require additional parameters) can be used as a key for the hashes dictionary. At least one secure algorithm from hashlib.algorithms_guaranteed SHOULD always be included.
hash (HashData | None) – The archive hash (deprecated).

has_valid_algorithms()¶

Has valid archive hashes?

Checks that the hashes attribute is not empty and that at least one of the hashes is present in hashlib.algorithms_guaranteed.

Returns:: Whether the archive has valid hashes.
Return type:: bool

>>> archive_info = ArchiveInfo(
...     hashes={
...         "sha256": "1dc6b5a470a1bde68946f263f1af1515a2574a150a30d6ce02c6ff742fcc0db9",
...         "md5": "c4e0f0a1e0a5e708c8e3e3c4cbe2e85f",
...     },
... )
>>> archive_info.has_valid_algorithms()
True

property all_hashes: dict[str, str]¶

All archive hashes.

Merges the hashes attribute with the legacy hash attribute, prioritizing the former.

Returns:: All archive hashes.

>>> archive_info = ArchiveInfo(
...     hash=HashData(
...         "sha256",
...         "2dc6b5a470a1bde68946f263f1af1515a2574a150a30d6ce02c6ff742fcc0db8",
...     ),
...     hashes={
...         "sha256": "1dc6b5a470a1bde68946f263f1af1515a2574a150a30d6ce02c6ff742fcc0db9",
...         "md5": "c4e0f0a1e0a5e708c8e3e3c4cbe2e85f",
...     },
... )
>>> archive_info.all_hashes
{'sha256': '1dc6b5a470a1bde68946f263f1af1515a2574a150a30d6ce02c6ff742fcc0db9', 'md5': 'c4e0f0a1e0a5e708c8e3e3c4cbe2e85f'}

to_dict()¶

Convert the archive data to a dictionary.

Returns:: The archive data as a dictionary.
Return type:: ArchiveInfoDict

>>> archive_info = ArchiveInfo(
...     hashes={
...         "sha256": "1dc6b5a470a1bde68946f263f1af1515a2574a150a30d6ce02c6ff742fcc0db9",
...         "md5": "c4e0f0a1e0a5e708c8e3e3c4cbe2e85f",
...     },
... )
>>> archive_info.to_dict()
{'hashes': {'sha256': '1dc6b5a470a1bde68946f263f1af1515a2574a150a30d6ce02c6ff742fcc0db9', 'md5': 'c4e0f0a1e0a5e708c8e3e3c4cbe2e85f'}}

class pep610.DirInfo(editable)¶

Local directory information.

See the Local Directories specification.

Parameters:: editable (bool | None) – Whether the distribution is installed in editable mode.

is_editable()¶

Distribution is editable?

True if the distribution was/is to be installed in editable mode, False otherwise. If absent, default to False

Returns:: Whether the distribution is installed in editable mode.
Return type:: bool

>>> dir_info = DirInfo(editable=True)
>>> dir_info.is_editable()
True

>>> dir_info = DirInfo(editable=False)
>>> dir_info.is_editable()
False

>>> dir_info = DirInfo(editable=None)
>>> dir_info.is_editable()
False

to_dict()¶

Convert the directory data to a dictionary.

Returns:: The directory data as a dictionary.
Return type:: DirectoryInfoDict

>>> dir_info = DirInfo(editable=True)
>>> dir_info.to_dict()
{'editable': True}

class pep610.VCSInfo(vcs, commit_id, requested_revision=None, resolved_revision=None, resolved_revision_type=None)¶

VCS information.

See the VCS URLs specification.

Parameters:

vcs (str) – The VCS type.
commit_id (str) – The exact commit/revision number that was/is to be installed.
requested_revision (str | None) – A branch/tag/ref/commit/revision/etc (in a format compatible with the VCS).

to_dict()¶

Convert the VCS data to a dictionary.

Returns:: The VCS data as a dictionary.
Return type:: VCSInfoDict

>>> vcs_info = VCSInfo(
...     vcs="git",
...     commit_id="4f42225e91a0be634625c09e84dd29ea82b85e27",
...     requested_revision="main",
... )
>>> vcs_info.to_dict()
{'vcs': 'git', 'commit_id': '4f42225e91a0be634625c09e84dd29ea82b85e27', 'requested_revision': 'main'}

Functions¶

pep610.parse(data)¶

Parse the direct URL data.

Parameters:: data (dict[str, Any]) – The direct URL data.
Returns:: The parsed direct URL data.
Raises:: DirectUrlValidationError – If the direct URL data does not contain a recognized info key.
Return type:: DirectUrl

>>> parse(
...     {
...         "url": "https://github.com/pypa/packaging",
...         "vcs_info": {
...             "vcs": "git",
...             "requested_revision": "main",
...             "commit_id": "4f42225e91a0be634625c09e84dd29ea82b85e27"
...         }
...     }
... )
DirectUrl(url='https://github.com/pypa/packaging', info=VCSInfo(vcs='git', commit_id='4f42225e91a0be634625c09e84dd29ea82b85e27', requested_revision='main', resolved_revision=None, resolved_revision_type=None), subdirectory=None)

pep610.read_from_distribution(dist)¶

Read the package data for a given package.

Parameters:: dist (importlib.metadata.Distribution) – The package distribution.
Returns:: The parsed PEP 610 data or None if the file is not found.
Return type:: DirectUrl | None

>>> import importlib.metadata
>>> dist = importlib.metadata.distribution("pep610")
>>> read_from_distribution(dist)
DirData(url='file:///home/user/pep610', dir_info=DirInfo(editable=False))

pep610.is_editable(distribution_name)¶

Wrapper around read_from_distribution() to check if a distribution is editable.

Parameters:: distribution_name (str) – The distribution name.
Returns:: Whether the distribution is editable.
Return type:: bool

>>> is_editable("pep610")
False

Exceptions¶

class pep610.DirectUrlValidationError¶: Direct URL validation error.

Types¶

class pep610._pep610.HashData(algorithm, value)¶

(Deprecated) Archive hash data tuple.

algorithm: str¶: The hash algorithm.

value: str¶: The hash value.

class pep610._types.ArchiveInfoDict¶

Archive information dictionary.

hashes: dict[str, str]¶: The hashes of the archive.

hash: str¶: The hash of the archive (deprecated).

class pep610._types.DirectoryInfoDict¶

Local directory information dictionary.

editable: bool¶: Whether the directory is editable.

class pep610._types.VCSInfoDict¶

VCS information dictionary.

vcs: Required[str]¶: The VCS type.

commit_id: Required[str]¶: The commit ID.

requested_revision: str¶: The requested revision.

class pep610._types.DirectUrlDict¶

Direct URL data dictionary.

url: Required[str]¶: The direct URL.