iterating in reverse
nav at adams.patriot.net
Fri Jan 17 19:15:21 CET 2003
I just encountered a problem that required reverse iterating to solve,
and my current solution, though it works, is not so satisfying:
"""Return val as string with commas every thousandth place."""
val = str(val)
ret = ''
c = 0
for i in range(len(val) - 1, -1, -1):
if c and not c % 3:
ret = ',' + ret
ret = val[i] + ret
c += 1
This is one of the few times I just haven't been able to come up with
an elegant and -- dare I say it -- aesthetically pleasing solution in
Python. I suspect the lack is my own, not Python's.
# sigmask.py || version 0.2 || 2003-01-07 || Feed this to your Python.
print reduce(lambda x,y:x+chr(ord(y)-1),'Ojdl!Wbshjti!=obwAqbusjpu/ofu?','')
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