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 061bbcb6d..6decc1cef 100644 --- a/sphinx/util/pycompat.py +++ b/sphinx/util/pycompat.py @@ -31,8 +31,15 @@ logger = logging.getLogger(__name__) # convert_with_2to3(): # support for running 2to3 over config files def convert_with_2to3(filepath: str) -> str: - 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] |