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Some patterns can be compiled in str form but not in bytes form. This
was overlooked because the test suite wasn't correctly adapted for py3k:
>>> re.compile('[\1円]')
<_sre.SRE_Pattern object at 0xb7be1410>
>>> re.compile('\09円')
<_sre.SRE_Pattern object at 0xb7c4f2f0>
>>> re.compile('\\n')
<_sre.SRE_Pattern object at 0xb7be1f50>
but:
>>> re.compile(b'[\1円]')
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/home/antoine/py3k/reunicode/Lib/re.py", line 188, in compile
return _compile(pattern, flags)
 File "/home/antoine/py3k/reunicode/Lib/re.py", line 240, in _compile
p = sre_compile.compile(pattern, flags)
 File "/home/antoine/py3k/reunicode/Lib/sre_compile.py", line 497, in
compile
p = sre_parse.parse(p, flags)
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 685, in parse
p = _parse_sub(source, pattern, 0)
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 320, in
_parse_sub
itemsappend(_parse(source, state))
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 409, in _parse
this = sourceget()
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 215, in get
self.__next()
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 204, in __next
char = char + c
TypeError: Can't convert 'int' object to str implicitly
>>> re.compile(b'\09円')
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/home/antoine/py3k/reunicode/Lib/re.py", line 188, in compile
return _compile(pattern, flags)
 File "/home/antoine/py3k/reunicode/Lib/re.py", line 240, in _compile
p = sre_compile.compile(pattern, flags)
 File "/home/antoine/py3k/reunicode/Lib/sre_compile.py", line 497, in
compile
p = sre_parse.parse(p, flags)
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 678, in parse
source = Tokenizer(str)
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 187, in
__init__
self.__next()
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 204, in __next
char = char + c
TypeError: Can't convert 'int' object to str implicitly
>>> re.compile(b'\\n')
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/home/antoine/py3k/reunicode/Lib/re.py", line 188, in compile
return _compile(pattern, flags)
 File "/home/antoine/py3k/reunicode/Lib/re.py", line 240, in _compile
p = sre_compile.compile(pattern, flags)
 File "/home/antoine/py3k/reunicode/Lib/sre_compile.py", line 497, in
compile
p = sre_parse.parse(p, flags)
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 678, in parse
source = Tokenizer(str)
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 187, in
__init__
self.__next()
 File "/home/antoine/py3k/reunicode/Lib/sre_parse.py", line 204, in __next
char = char + c
TypeError: Can't convert 'int' object to str implicitly