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Only call get_future_imports when needed (#3135)

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Yilei "Dolee" Yang 2022-06-23 12:41:05 -07:00 committed by GitHub
parent 6463fb874f
commit fa6caa6ca8
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1 changed files with 1 additions and 1 deletions
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src/black/__init__.py
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@ -1172,10 +1172,10 @@ def f(
def _format_str_once(src_contents: str, *, mode: Mode) -> str: def _format_str_once(src_contents: str, *, mode: Mode) -> str:
src_node = lib2to3_parse(src_contents.lstrip(), mode.target_versions) src_node = lib2to3_parse(src_contents.lstrip(), mode.target_versions)
dst_contents = [] dst_contents = []
future_imports = get_future_imports(src_node)
if mode.target_versions: if mode.target_versions:
versions = mode.target_versions versions = mode.target_versions
else: else:
future_imports = get_future_imports(src_node)
versions = detect_target_versions(src_node, future_imports=future_imports) versions = detect_target_versions(src_node, future_imports=future_imports)
normalize_fmt_off(src_node, preview=mode.preview) normalize_fmt_off(src_node, preview=mode.preview)