SM
Size: a a a
SM
SM
MM
SM
In [8]: %timeit re.sub(r'\s+', ' ', s)
37.4 µs ± 140 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
In [9]: %timeit re.sub(r'\s\s+', ' ', s)
10.8 µs ± 17.9 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
AK
SM
AK
AK
AW
SM
MA
Е
AW
AW
AW
AK
AK
SM
SM
MM