New submission from Stéphane Wirtel <steph...@wirtel.be>:
Hi,
Maybe already discussed with Victor but I think there is no optimization when
we have this simple case for float(X) and int(X)
Example:
>>> import dis
>>> dis.dis("x = float(0)")
1 0 LOAD_NAME 0 (float)
2 LOAD_CONST 0 (0)
4 CALL_FUNCTION 1
6 STORE_NAME 1 (x)
8 LOAD_CONST 1 (None)
10 RETURN_VALUE
>>> dis.dis("x = 1 + 1")
1 0 LOAD_CONST 0 (2)
2 STORE_NAME 0 (x)
4 LOAD_CONST 1 (None)
6 RETURN_VALUE
>>> dis.dis("x = int(0)")
1 0 LOAD_NAME 0 (int)
2 LOAD_CONST 0 (0)
4 CALL_FUNCTION 1
6 STORE_NAME 1 (x)
8 LOAD_CONST 1 (None)
10 RETURN_VALUE
>>>
There is an optim for x = 1 + 1
----------
messages: 318016
nosy: matrixise, vstinner
priority: normal
severity: normal
status: open
title: Optimize the bytecode for float(0) ?
versions: Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue33682>
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