[issue17718] boolop constant checking for if/while

2020-01-10 Thread Benjamin Peterson 


Change by Benjamin Peterson :


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resolution:  -> rejected
stage:  -> resolved
status: open -> closed

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[issue17718] boolop constant checking for if/while

2020-01-10 Thread Zackery Spytz 


Zackery Spytz  added the comment:

I think this issue should be closed.

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nosy: +ZackerySpytz

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[issue17718] boolop constant checking for if/while

2013-04-19 Thread Benjamin Peterson 

Benjamin Peterson added the comment:

Thank you for the patch. However, I don't think such "optimizations" are 
particularly useful.

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[issue17718] boolop constant checking for if/while

2013-04-19 Thread Terry J. Reedy 

Changes by Terry J. Reedy :


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nosy: +benjamin.peterson, brett.cannon, georg.brandl, ncoghlan

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[issue17718] boolop constant checking for if/while

2013-04-13 Thread Ned Batchelder 

Changes by Ned Batchelder :


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nosy: +nedbat

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[issue17718] boolop constant checking for if/while

2013-04-13 Thread Stephen Tu 

New submission from Stephen Tu:

Here's a simple patch to optimize away constant boolean 
conjunctions/disjunctions. for example:

def foo():
if 1 and 0:
print("hi")

now disassembles into:
  7   0 LOAD_CONST   0 (None) 
  3 RETURN_VALUE 

while I realize more general techniques for achieving this have been proposed 
(ie http://bugs.python.org/issue1346238), this is a very simple, self-contained 
patch.

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components: Interpreter Core
files: constcheck.patch
keywords: patch
messages: 186767
nosy: Stephen.Tu
priority: normal
severity: normal
status: open
title: boolop constant checking for if/while
type: performance
versions: Python 3.4
Added file: http://bugs.python.org/file29807/constcheck.patch

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