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from packaging.version import parse as Version
import sys
import pdb
from urllib3 import Retry, PoolManager
import json
import os
def get_pypi_xmlrpc_client():
"""This is actually deprecated client."""
import xmlrpc.client
return xmlrpc.client.ServerProxy("https://pypi.python.org/pypi", use_datetime=True)
class PyPIClient:
def __init__(self, host="https://pypi.org"):
self._host = host
self._http = PoolManager(
retries=Retry(total=3, raise_on_status=True), ca_certs=os.getenv("REQUESTS_CA_BUNDLE", None)
)
def project(self, package_name):
response = self._http.request(
"get", "{host}/pypi/{project_name}/json".format(host=self._host, project_name=package_name)
)
return json.loads(response.data.decode("utf-8"))
def project_release(self, package_name, version):
response = self._http.request(
"get",
"{host}/pypi/{project_name}/{version}/json".format(
host=self._host, project_name=package_name, version=version
),
)
return json.loads(response.data.decode("utf-8"))
def filter_packages_for_compatibility(self, package_name, version_set):
# only need the packaging.specifiers import if we're actually executing this filter.
from packaging.specifiers import SpecifierSet
results = []
for version in version_set:
requires_python = self.project_release(package_name, version)["info"]["requires_python"]
if requires_python:
if Version(".".join(map(str, sys.version_info[:3]))) in SpecifierSet(requires_python):
results.append(version)
else:
results.append(version)
return results
def get_ordered_versions(self, package_name, filter_by_compatibility=False):
project = self.project(package_name)
versions = [Version(package_version) for package_version in project["releases"].keys()]
versions.sort()
if filter_by_compatibility:
return self.filter_packages_for_compatibility(package_name, versions)
return versions
def get_relevant_versions(self, package_name):
"""Return a tuple: (latest release, latest stable)
If there are different, it means the latest is not a stable
"""
versions = self.get_ordered_versions(package_name)
pre_releases = [version for version in versions if not version.is_prerelease]
return (versions[-1], pre_releases[-1])
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