Question

I want to remove all spaces from a string.

” as fa sdf sdfsdf “

The result would be:

“asfasdfsdfsdf”

There are several ways I can think of to achieve this, and I’m wondering which one is the best.

1.

"".join(" as fa   sdf sdfsdf ".split())

2.

" as fa   sdf sdfsdf ".replace(" ", "")

And I assume that there are more.
Which one is preferred?

Answer 1

I believe the best and most efficient method is the second version, " as fa sdf sdfsdf ".replace(" ", ""), as evidence you can use the timeit module:

• python -m timeit '"".join(" as fa sdf sdfsdf ".split())'

  1000000 loops, best of 3: 0.554 usec per loop

• python -m timeit '" as fa sdf sdfsdf ".replace(" ", "")'

  1000000 loops, best of 3: 0.405 usec per loop