New submission from Tri Nguyen:
This code below shows a situation when Python int() library would return a
value of int(1.0) -> 0.0
---------------CODE----------------------------
CHANGES = [1.00, 0.50, 0.25, 0.10, 0.05, 0.01]
# This code was originally to solve the least number of changes needed.
# However, in an attempt to solve this. A bug is found.
def get_change(R):
for change in CHANGES:
# This division and int() is where failure is happening
num = int(R / change)
# This printing line shows the failure.
print 'int(%s)\t = %s' % (R / change, num)
R = R - num * change
print 'R = %s' % R
get_change(4.01)
-------------OUTPUT----------------------
int(4.01) = 4
int(0.02) = 0
int(0.04) = 0
int(0.1) = 0
int(0.2) = 0
int(1.0) = 0 # This should be 1, right?
R = 0.01
----------
components: Library (Lib)
files: int_bug.py
messages: 291249
nosy: nvutri
priority: normal
severity: normal
status: open
title: Integer conversion failure
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file46783/int_bug.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue30009>
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