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Error Redefinition Of 'class

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Error Redefinition Of ‘class

Problem Group Name Redefinition? up vote 4 down vote favorite 4 So I have this regex: (^(\s+)?(?P(\w)(\d{7}))((01f\.foo)|(\.bar|\.goo\.moo\.roo))$|(^(\s+)?(?PR1_\d{6}_\d{6}_)((01f\.foo)|(\.bar|\.goo\.moo\.roo))$)) Now if I try and do a match against this: B048661501f.foo I get this error: File "C:\Python25\lib\re.py", line 188, in compile return _compile(pattern, flags) File "C:\Python25\lib\re.py", line 241, in _compile raise error, v # invalid expression sre_constants.error: redefinition of group name 'NAME' as group 9; was group error redefinition of c++ 3 If I can't define the same group twice in the same regex expression for two different cases, what do I do? python regex share|improve this question edited Dec 12 '08 at 16:51 Jonathan Leffler 439k62509823 asked Dec 12 '08 at 15:58 UberJumper 4,793114573 Works for me. Returned; ('B048661501f.foo', None, 'B0486615', 'B', '0486615', '01f.foo', '01f.foo', None, None, None, None, None, None, None) –muhuk Dec 12 '08 at 16:16 1 You have waaaaaaaay too many parentheses in your regex. Taking the unnecessary ones out alone would make it considerably shorter. –Tomalak Dec 12 '08 at 16:34 add a comment| 2 Answers 2 active oldest votes up vote 6 down vote accepted No, you can't have two groups of the same name, this would somehow defy the purpose, wouldn't it? What you probably really want is this: ^\s*(?P\w\d{7}|R1_(?:\d{6}_){2})(01f\.foo|\.(?:bar|goo|moo|roo))$ I refactored your regex as far as possible. I made the following assumptions: You want to (correct me if I'm wrong): ignore white space at the start of the string match either of the following into a group named "NAME": a letter followed by 7 digits, or "R1_", and t

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Stack Overflow the company Business Learn more about hiring developers or posting ads error redefinition of 'struct iovec' with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow error redefinition of default argument is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Python Regex - Is it possible to use the same group (named or http://stackoverflow.com/questions/363171/regex-problem-group-name-redefinition unnamed) in multiple spots? up vote 0 down vote favorite I have a bunch of strings, some of which I need to replace a part of. However, the parts before and after the parts that need to be replaced are not always the same. Also, the part of the string that needs to be replaced is not something I can match with a regex without it matching other parts that http://stackoverflow.com/questions/21999677/python-regex-is-it-possible-to-use-the-same-group-named-or-unnamed-in-multip I don't want to replace. For example: "prefixA_REPLACEME_postfixA", "prefixB_SOMETHING_postfixB", "prefixA_LLAMAS_postfixC", "prefixB_DONTREPLACE_postfixA", Turned into: "prefixA_NEWSTR_postfixA", "prefixB_NEWSTR_postfixB", "prefixA_NEWSTR_postfixC", "prefixB_DONTREPLACE_postfixA", I would love to do this with a single regex, like this: re.sub('(prefixA_).*(_postfixA)|(prefixB_).*(_postfixB)|(prefixA_).*(_postfixC)', '\\1NEWSTR\\2', stringToFix) Unfortunately this doesn't work, because group 1 and group 2 are (prefixA_) and (postfixA), whether or not that is the part of the regex that ends up being used. I also can't use this re.sub('(?PprefixA_).*(?P_postfixA)|(?PprefixB_).*(?P_postfixB)|(?PprefixA_).*(?P_postfixC)', '\\1NEWSTR\\2', stringToFix) because it gives me the error sre_constants.error: redefinition of group name 'one' as group 3; was group 1 Something else that won't work is this re.sub('(prefixA_|prefixB).*(_postfixA|_postfixB|_postfixC)', '\\1NEWSTR\\2', stringToFix) because this would capture the fourth string, which I don't want to be matched. So is there a way to make it so that any uncaptured groups are not counted (which would make my first regex work correctly)? Or any other way to do this with a single regex? python regex share|improve this question edited Feb 24 '14 at 21:56 asked Feb 24 '14 at 21:44 Rob Watts 4,6211837 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted You can't define a named capturing group more than once within the same regex (unlike other regex flavors like .NET). But since you're not doing anyth

User List Committer List Help Tracker Documentation Tracker Development Report Tracker Problem Issue4430 classification Title: time.strptime does not allow same format directive twice Type: behavior Stage: needs patch Components: Versions: Python 2.5 process Status: closed Resolution: wont fix http://bugs.python.org/issue4430 Dependencies: Superseder: Assigned To: Nosy List: brett.cannon, mrabarnett, sil Priority: low Keywords: Created on 2008-11-25 16:36 by sil, last changed 2010-08-04 23:30 by terry.reedy. This issue is now closed. Messages (3) msg76417 - (view) Author: https://recalll.co/app/?q=python%20-%20Regex%20Problem%20Group%20Name%20Redefinition%3F%20-%20Stack%20Overflow (sil) Date: 2008-11-25 16:36 $ python -c "import time; print time.strptime('25/11/2008 25/11/2008','%d/%m/%y %d/%m/%y')" Traceback (most recent call last): File "", line 1, in File "/usr/lib/python2.5/_strptime.py", line 311, in strptime format_regex = _TimeRE_cache.compile(format) File error redefinition "/usr/lib/python2.5/_strptime.py", line 267, in compile return re_compile(self.pattern(format), IGNORECASE) File "/usr/lib/python2.5/re.py", line 188, in compile return _compile(pattern, flags) File "/usr/lib/python2.5/re.py", line 241, in _compile raise error, v # invalid expression sre_constants.error: redefinition of group name 'd' as group 4; was group 1 If a format directive is repeated in time.strptime's format string, it throws an error and should not do so. Subversion, for example, repeats date parts in its svn error redefinition of log output ("2008-09-26 16:20:59 +0100 (Fri, 26 Sep 2008)"), which repeats both %d (day) and %y (year). msg76418 - (view) Author: Matthew Barnett (mrabarnett) * Date: 2008-11-25 18:36 Subversion is formatting a string from a time (strftime), so a repeated placeholder is OK. You're trying to _parse_ a time from a string (strptime). If you're telling it that 2 different parts of the string are the date, what should it do? The Pythonic thing to do is raise an exception. (I suppose an alternative would be to raise an exception only if they give different results.) msg76421 - (view) Author: Brett Cannon (brett.cannon) * Date: 2008-11-25 19:28 The reason this occurs is that in order to have a portable and sane implementation time.strptime() uses the re module to parse dates. The issue here is that by specifying the same format twice the re module is complaining that there are two named groups with the same name, leading to a conflict. About the only solution I can think of that doesn't require some massive rewrite is to drop named group usage from time.strptime() and move to positional groups by keeping track of the order of the formats and zipping the format order and results together or somet

as far as possible. I made the following assumptions: You want to (correct me if I'm wrong): "01f.foo" "." followed by the end of the string You could also have meant: ^\s*(?P\w\d{7}01f|R1_(?:\d{6}_){2})\.(?:foo|bar|goo|moo|roo)$ python - Regex Problem Group Name Redefinition? - Stack Overflow View More at http://stackoverflow.com/questions/363171/regex-problem-group-nam... Reusing the same name makes sense in your case, contrary to Tamalak's reply. python - Regex Problem Group Name Redefinition? - Stack Overflow View More at http://stackoverflow.com/questions/363171/regex-problem-group-nam... A couple of variations on your theme. For one, I've always found regexen to be cryptic to the point of unmaintainable, so I wrote the pyparsing module. In my mind, I look at your code and think, "oh, it's a list of '/'-delimited strings, an '=' sign, and then some kind of rvalue." And that translates pretty directly into the pyparsing parser definition code. By adding a name here and there in the parser ("key" and "value", similar to named groups in regex), the output is pretty easily processed. data="""\ Same/Same2/Foot/Ankle/Joint/Actuator/Sensor/Temperature/Value=4.123 Same/Same2/Battery/Name=SomeString Same/Same2/Home/Land/Some/More/Stuff=0.34""".splitlines() from pyparsing import Word, alphas, alphanums, Word, nums, QuotedString, delimitedList wd = Word(alphas, alphanums) number = Word(nums+'+-', nums+'.').setParseAction(lambda t:float(t[0])) rvalue = wd | number | QuotedString('"') defn = delimitedList(wd, '/')('key') + '=' + rvalue('value') for d in data: result = defn.parseString(d) Second, I question your approach at defining all of those variable names - creating variable names on the fly based on your data is a pretty well-recognized Code Smell (not necessarily bad, but you might really want to rethink this approach). I used a recursive defaultdict to create a navigable structure so that you can easily do operations like "find all the entries that are sub-elements of "Same2" (in this case, "Foot", "Battery", and "Home") - this kind of work is more difficult when trying to sift through some collection of variable names as found in locals(), it seems to me you will end up re-parsing these names to reconstruct the key hierarchy. from collections import defaultdict class recursivedefaultdict(defaultdict): def __init__(self, attrFactory=int): self.default_factory = lambda : type(self)(attrFactory) self._attrFactory = attrFactory def __getattr__(self, attr): newval = self._attrFactory() setattr(self, attr, newval) return newval table = recursivedefaultdict() # parse each entry, and accumula

 

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