diff options
Diffstat (limited to 'sphinx/util/pycompat.py')
| -rw-r--r-- | sphinx/util/pycompat.py | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sphinx/util/pycompat.py b/sphinx/util/pycompat.py index bcd90a718..7d22a792a 100644 --- a/sphinx/util/pycompat.py +++ b/sphinx/util/pycompat.py @@ -23,8 +23,15 @@ def convert_with_2to3(filepath: str) -> str: warnings.warn('convert_with_2to3() is deprecated', RemovedInSphinx60Warning, stacklevel=2) - from lib2to3.refactor import RefactoringTool, get_fixers_from_package - from lib2to3.pgen2.parse import ParseError + try: + from lib2to3.refactor import RefactoringTool, get_fixers_from_package + from lib2to3.pgen2.parse import ParseError + except ImportError: + # python 3.9.0a6+ emits PendingDeprecationWarning for lib2to3. + # Additionally, removal of the module is still discussed at PEP-594. + # To support future python, this catches ImportError for lib2to3. + raise SyntaxError + fixers = get_fixers_from_package('lib2to3.fixes') refactoring_tool = RefactoringTool(fixers) source = refactoring_tool._read_python_source(filepath)[0] |