def space_out_camel_case(stringAsCamelCase):
"""Adds spaces to a camel case string. Failure to space out string returns the original string.
>>> space_out_camel_case('DMLSServicesOtherBSTextLLC')
'DMLS Services Other BS Text LLC'
"""
retValue = ''
if stringAsCamelCase is None:
return None
try:
retValue = ''
humpFinder = re.compile('([A-Z][a-z])|([a-z][A-Z][a-z])|([a-z][A-Z])') # DMLSServicesOtherBSTextLLC would match "Se", "sOt", "rB", "Te", "tL")
humpMatches = humpFinder.finditer(stringAsCamelCase)
# Determine each position in the original string that requires a space
spaceIndicies = []
for previousSpacesAdded,match in enumerate(humpMatches):
spaceIndicies.append(match.start() + re.search('[A-Z]', match.group()).start() + previousSpacesAdded)
# Split up the string, adding spaces where appropriate
retValue = list(stringAsCamelCase)
for spaceIndex in spaceIndicies: retValue.insert(spaceIndex, ' ')
retValue = ''.join(retValue)
except:
print 'Encountered error adding spaces to %s' % stringAsCamelCase
retValue = stringAsCamelCase
return retValue
Refactorings
No refactoring yet !
Simon Hartley
December 27, 2008, December 27, 2008 12:53, permalink
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I think you probably just missed the sub method.
I don't really have a good reason for using a lambda here over a function, apart from the fact that I think they're cool. I don't have a python interpreter available to test this unfortunately, but it can probably be fixed up fairly straight-forwardly.
def space_out_camel_case(stringAsCamelCase):
"""Adds spaces to a camel case string. Failure to space out string returns the original string.
>>> space_out_camel_case('DMLSServicesOtherBSTextLLC')
'DMLS Services Other BS Text LLC'
"""
if stringAsCamelCase is None:
return None
pattern = re.compile('([A-Z][A-Z][a-z])|([a-z][A-Z])')
return pattern.sub(lambda m: m.group()[:1] + " " + m.group()[1:], stringAsCamelCase):
Guido Python
January 16, 2009, January 16, 2009 21:10, permalink
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Here's my 2 cents on this topic. You can get the libraries used in my code from http://www.pypi.info.
class DeCamelCaseMethods(Enum):
default = 2**0
force_lower_case = 2**1
def de_camel_case(stringAsCamelCase,delim=' ',method=DeCamelCaseMethods.default):
"""Adds spaces to a camel case string. Failure to space out string returns the original string.
>>> space_out_camel_case('DMLSServicesOtherBSTextLLC')
'DMLS Services Other BS Text LLC'
"""
import re
if stringAsCamelCase is None:
return None
normalize = lambda s:s
if (method == DeCamelCaseMethods.force_lower_case):
normalize = lambda s:s.lower()
pattern = re.compile('([A-Z][A-Z][a-z])|([a-z][A-Z])')
return normalize(pattern.sub(lambda m: m.group()[:1] + delim + m.group()[1:], stringAsCamelCase))
snies
May 11, 2009, May 11, 2009 12:55, permalink
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@ Simon Hartley: Wouldn't it be better to put the re.compile outside of the function definition? Otherwise it will be executed for each function call.
onk
March 7, 2010, March 07, 2010 19:38, permalink
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Positional regex.
def space_out_camel_case(s):
"""Adds spaces to a camel case string. Failure to space out string returns the original string.
>>> space_out_camel_case('DMLSServicesOtherBSTextLLC')
'DMLS Services Other BS Text LLC'
"""
return re.sub('((?=[A-Z][a-z])|(?<=[a-z])(?=[A-Z]))', ' ', s)
Hi, I'm a python newbie. Could someone look at this small snippet of code I made and give suggestions to working more Pythonic? I wouldn't know better if I'm writing ugly python code so please let me know if I am. Thanks!