Python Maniac schrieb:
> I am new to Python however I would like some feedback from those who
> know more about Python than I do at this time.
>
> def scrambleLine(line):
> s = ''
> for c in line:
> s += chr(ord(c) | 0x80)
> return s
>
> def descrambleLine(line):
> s = ''
> for c in line:
> s += chr(ord(c) & 0x7f)
> return s
These might benefit from using a lookup-dictionary that maps ord(c) to
the outcome of the operation. Actually, it becomes twice as fast:
import time
lt = {}
for i in xrange(255):
lt[chr(i)] = chr(i | 0x80)
def scrambleLine(line):
s = ''
for c in line:
s += chr(ord(c) | 0x80)
return s
def scrambleLineLU(line):
s = ''
for c in line:
s += lt[c]
return s
if __name__ == "__main__":
line = "abcdefghijklmnop" * 1000000
start = time.time()
scrambleLine(line)
print time.time() - start
start = time.time()
scrambleLineLU(line)
print time.time() - start
Diez
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