New submission from myungsekyo <[email protected]>:
I think it is more efficient to cast `variable prompt` into string after its
validation in _raw_input().
Because If it is None or empty string then it is not used.
```
import timeit
MAX = 10000000
start = timeit.default_timer()
for i in range(MAX):
_raw_input()
end = timeit.default_timer()
print('estimated : {}'.format(end - start))
```
I tested on 10 millions inputs with above code.
and the result is as follows.
Before:
estimated : 5.060587857999053
estimated : 5.0425375679988065
estimated : 4.850400277999142
estimated : 4.888060468998447
estimated : 4.849542597999971
estimated : 4.822679259999859
estimated : 5.053791769001691
estimated : 4.914149145999545
estimated : 4.9584080040003755
estimated : 4.944711199001176
After:
estimated : 4.014042392998817
estimated : 3.987057284997718
estimated : 4.081281360999128
estimated : 4.06813505899845
estimated : 4.040622504999192
estimated : 4.1239150339970365
estimated : 4.174400065003283
estimated : 4.015272281998477
estimated : 4.034917910001241
estimated : 4.08582956799728
----------
components: IO
messages: 346986
nosy: myungsekyo
priority: normal
severity: normal
status: open
title: Move casting prompt after its validation in _raw_input()
type: performance
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Python tracker <[email protected]>
<https://bugs.python.org/issue37466>
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