PyPI client [skip ci]

azure-sdk-tools/packaging_tools/pypi.py

@@ -0,0 +1,58 @@
+from typing import Optional
+
+from packaging.version import parse as Version, InvalidVersion
+
+import requests
+
+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: str = "https://pypi.org"):
+        self._host = host
+        self._session = requests.Session()
+
+    def project(self, package_name: str):
+        response = self._session.get(
+            "{host}/pypi/{project_name}/json".format(
+                host=self._host,
+                project_name=package_name
+            )
+        )
+        response.raise_for_status()
+        return response.json()
+
+    def project_release(self, package_name: str, version: str):
+        response = self._session.get(
+            "{host}/pypi/{project_name}/{version}/json".format(
+                host=self._host,
+                project_name=package_name,
+                version=version
+            )
+        )
+        response.raise_for_status()
+        return response.json()
+
+    def get_ordered_versions(self, package_name: str):
+        project = self.project(package_name)
+        versions = [
+            Version(package_version)
+            for package_version
+            in project["releases"].keys()
+        ]
+        versions.sort()
+        return versions
+
+    def get_relevant_versions(self, package_name: str):
+        """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]
+        )