Python 3 integer division [duplicate]

Question

In Python 3 vs Python 2.6, I've noticed that I can divide two integers and get a float. How do you get the Python 2.6 behaviour back?

Is there a different method to get int/int = int?

Use // (floor division) instead of / (true division).

falsetru
– falsetru

2013-10-22 02:03:12 +00:00
Commented Oct 22, 2013 at 2:03 — falsetru
– falsetru, Commented Oct 22, 2013 at 2:03
PEP 238 introduced the // floor division operator.

Jonathon Reinhart
– Jonathon Reinhart

2013-10-22 02:15:02 +00:00
Commented Oct 22, 2013 at 2:15 — Jonathon Reinhart
– Jonathon Reinhart, Commented Oct 22, 2013 at 2:15

Jonathon Reinhart · Accepted Answer · 2013-10-22 02:13:25Z

271

Try this:

a = 1
b = 2
int_div  = a // b

edited Oct 22, 2013 at 2:13

Jonathon Reinhart

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answered Oct 22, 2013 at 2:08

Lucas Ribeiro

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3 Comments

Kyle Strand Over a year ago

Note that // is available in Python2 as well (since 2.2, I believe).

asmaier Over a year ago

Note that 1.0 // 2 and 1 // 2.0 maybe surprisingly return a float with value 0.0.

Thorham Over a year ago

Floor divisions are NOT integer divisions. A floor division will return -2 for -3 / 2, while an integer division should return -1 (there's no floor or ceil in integer land).

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