lambda requirements
Wolfgang Thaemelt
wolfgang.thaemelt at orsoft.de
Mon Jul 3 08:41:26 EDT 2000
Running the script:
#----------------------------------------- begin of script
def SymmetricDifference(list1, list2):
# global _list1
# global _list2
_list1 = list1
_list2 = list2
_onlylist1 = filter(lambda x: x not in _list2, _list1)
return _onlylist1
if __name__ == '__main__':
a = [1,2,3,4,5]
b = [3,4,5,6,7]
x = SymmetricDifference(a,b)
print x
#---------------------------------------- end of script
gives the error:
Traceback (innermost last):
File "E:\up\000701\symmdiff.py", line 16, in ?
x = SymmetricDifference(a,b)
File "E:\up\000701\symmdiff.py", line 9, in SymmetricDifference
_onlylist1 = filter(lambda x: x not in _list2, _list1)
File "E:\up\000701\symmdiff.py", line 9, in <lambda>
_onlylist1 = filter(lambda x: x not in _list2, _list1)
NameError: _list2
If the comment characters "#" are removed from the "global" statements
everything works fine.
Is there some requirement on a lambda violated in the script?
Thanks
Wolfgang Thaemelt
OR Soft Jaenicke GmbH
Geusaer Str., FH Geb. 106
06217 Merseburg
Germany
======================================
Email: wolfgang.thaemelt at orsoft.de
Voice: +49-3461-549033
Fax: +49-3461-549022
More information about the Python-list
mailing list