Update antsibull/docs_parsing/ansible_doc.py

Co-authored-by: Toshio Kuratomi <[email protected]>

antsibull/docs_parsing/ansible_doc.py

@@ -208,19 +208,10 @@ def get_collection_metadata(venv: t.Union['VenvRunner', 'FakeVenvRunner'],
 def get_ansible_core_version(venv: t.Union['VenvRunner', 'FakeVenvRunner'],
                              env: t.Dict[str, str],
                              ) -> PypiVer:
-    venv_ansible = venv.get_command('ansible')
-    ansible_version_cmd = venv_ansible('--version', _env=env)
-    output = ansible_version_cmd.stdout.decode('utf-8', errors='surrogateescape')
-    first_line = output.splitlines()[0]
-    # `ansible 2.10.0`
-    m = re.match(r'^ansible ([^[ ]+)', first_line)
-    if m:
-        return PypiVer(m.group(1))
-    # `ansible [core 2.12.0.dev0]  (devel cd8e3a2208) last updated 2021/05/19 08:35:55 (GMT +200)`
-    m = re.match(r'^ansible \[[^]]+ ([^]]+)\]', first_line)
-    if m:
-        return PypiVer(m.group(1))
-    raise ParsingError(f'Cannot interpret first line of ansible --version output: "{first_line}"')
+    venv_python = venv.get_command('python')
+    ansible_version_cmd = venv_python('-c', 'import ansible.release; print(ansible.release.__version__)', _env=env)
+    output = ansible_version_cmd.stdout.decode('utf-8', errors='surrogateescape').strip()
+    return PypiVer(output)
 
 
 async def get_ansible_plugin_info(venv: t.Union['VenvRunner', 'FakeVenvRunner'],