diff options
Diffstat (limited to 'Lib/sre_parse.py')
| -rw-r--r-- | Lib/sre_parse.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/sre_parse.py b/Lib/sre_parse.py index d74e93f..4a77f0c 100644 --- a/Lib/sre_parse.py +++ b/Lib/sre_parse.py @@ -279,6 +279,9 @@ class Tokenizer: break result += c return result + @property + def pos(self): + return self.index - len(self.next or '') def tell(self): return self.index - len(self.next or '') def seek(self, index): @@ -727,8 +730,13 @@ def _parse(source, state, verbose): state.checklookbehindgroup(condgroup, source) elif char in FLAGS or char == "-": # flags + pos = source.pos flags = _parse_flags(source, state, char) if flags is None: # global flags + if pos != 3: # "(?x" + import warnings + warnings.warn('Flags not at the start of the expression', + DeprecationWarning, stacklevel=7) continue add_flags, del_flags = flags group = None |