<[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
Mark Tolonen:
Writing a helper function reduces code repetition and improves
readability:
def crange(startch,endch):
'''Return a list of characters from startch to endch, inclusive.'''
return [chr(c) for c in xrange(ord(startch),ord(endch)+1)]
In Python ranges are open on the right, so I name cinterval such
function.
Yes, and that's fine when dealing with integers and slicing, but when
dealing with characters, it is non-obvious what character to use. What
"looks" correct?
chars = crange('0','9') + crange('A','Z') + crange('a','z') # inclusive
or
chars = crange('0',':') + crange('A','[') + crange('a','{') # open right
or if you didn't know the character after the one you actually wanted:
chars = crange('0',chr(ord('9')+1)) + crange('A',chr(ord('Z')+1)) +
crange('a',chr(ord('z')+1)) # open right, but messy
-Mark
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