7/200 and 7%200 show weird results

[HenryEshbaugh]

BPO	10163
Nosy	@birkenfeld, @mdickinson, @ericvsmith

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2010-10-21.14:11:56.078>
created_at = <Date 2010-10-21.11:21:47.861>
labels = ['invalid']
title = '7/200 and 7%200 show weird results'
updated_at = <Date 2010-10-21.14:11:56.077>
user = 'https://bugs.python.org/HenryEshbaugh'

bugs.python.org fields:

activity = <Date 2010-10-21.14:11:56.077>
actor = 'georg.brandl'
assignee = 'none'
closed = True
closed_date = <Date 2010-10-21.14:11:56.078>
closer = 'georg.brandl'
components = []
creation = <Date 2010-10-21.11:21:47.861>
creator = 'Henry.Eshbaugh'
dependencies = []
files = []
hgrepos = []
issue_num = 10163
keywords = []
message_count = 5.0
messages = ['119274', '119275', '119279', '119299', '119300']
nosy_count = 4.0
nosy_names = ['georg.brandl', 'mark.dickinson', 'eric.smith', 'Henry.Eshbaugh']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue10163'
versions = []

[HenryEshbaugh]

This may be happening with other numbers, but I got weird results with the modulus and division operators, after I imported the math module. I tried to do 7/200 and got 0, and 200%7 yielded 7, an impossibility with modulus.

[birkenfeld]

The result of 7 / 200 is easy to explain -- this is how integer division works in Python 2. (To get a floating result, one of the numbers must be a float.)

200 % 7 giving 7 however is strange. Are you sure this is what you calculated?

[ericvsmith]

Which version of python? Could you run this from the command line and paste the complete session, including the version info that python prints on startup?

[mdickinson]

Seconding Eric's comment. This is what I get on my machine; can you cut and paste the equivalent output on yours (including whatever else is required to reproduce the results you describe)

Python 2.6.1 (r261:67515, Feb 11 2010, 15:47:53) 
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 200 % 7
4

In any case, please let us know which version of Python you're using, and where you got it from.

[birkenfeld]

The bug title interestingly says "7%200", which does result in 7. I therefore think the OP just confused the order of operands for "%".