Suppose you need to split a string into substrings of a given size (except possibly the last substring). I make the hypothesis the first slice is at the end of the string. A typical example is provided by formatting a decimal string with thousands separator.
What is the pythonic way to do this ? For my part, i reach to this rather complicated code: # ---------------------- def comaSep(z,k=3, sep=','): z=z[::-1] x=[z[k*i:k*(i+1)][::-1] for i in range(1+(len(z)-1)/k)][::-1] return sep.join(x) # Test for z in ["75096042068045", "509", "12024", "7", "2009"]: print z+" --> ", comaSep(z) # ---------------------- outputting : 75096042068045 --> 75,096,042,068,045 509 --> 509 12024 --> 12,024 7 --> 7 2009 --> 2,009 Thanks -- http://mail.python.org/mailman/listinfo/python-list