Hi
This is a simple question. I'm looking for the fastest way to
calculate the leading whitespace (as a string, ie ' ').
Here are some different methods I have tried so far
--- solution 1
a = ' some content\n'
b = a.strip()
c = ' '*(len(a)-len(b))
--- solution 2
a = ' some content\n'
b = a.strip()
c = a.partition(b[0])[0]
--- solution 3
def get_leading_whitespace(s):
def _get():
for x in s:
if x != ' ':
break
yield x
return ''.join(_get())
---
Solution 1 seems to be about as fast as solution 2 except in certain
circumstances where the value of b has already been determined for
other purposes. Solution 3 is slower due to the function overhead.
Curious to see what other types of solutions people might have.
Thanks,
Daniel
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