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bpo-40169: Make dis.findlabels() accept a code object #19356

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bpo-40169: Make dis.findlabels() accept a code object #19356

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10 changes: 9 additions & 1 deletion Lib/dis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -318,7 +318,7 @@ def _get_instructions_bytes(code, varnames=None, names=None, constants=None,
arguments.

"""
labels = findlabels(code)
labels = _findlabels_bytes(code)
starts_line = None
for offset, op, arg in _unpack_opargs(code):
if linestarts is not None:
Expand Down Expand Up @@ -432,6 +432,14 @@ def findlabels(code):

Return the list of offsets.

"""
return _findlabels_bytes(code.co_code)

def _findlabels_bytes(code):
"""Detect all offsets in a raw compiled bytecode string which are jump targets.

Return the list of offsets.

"""
labels = []
for offset, op, arg in _unpack_opargs(code):
Expand Down
7 changes: 7 additions & 0 deletions Lib/test/test_dis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1202,5 +1202,12 @@ def test_from_traceback_dis(self):
b = dis.Bytecode.from_traceback(tb)
self.assertEqual(b.dis(), dis_traceback)

def test_findlabels(self):
self.assertEqual(
dis.findlabels(jumpy.__code__), [
44, 30, 8, 52, 94, 82, 102, 200, 118, 144, 142, 188, 172, 178, 210
])


if __name__ == "__main__":
unittest.main()