Python Integer Division [2-Min Tutorial]

Integer division consists of two steps:

  • Perform normal float division a / b.
  • Round the result down to the next integer.

What is the output of this code snippet?

x = 50 // 11

When I started to learn Python 3, I used to be confused about the semantics of dividing two integers. Is the result a float or an integer value? The reason for my confusion was a nasty Java bug that I once found in my code. The code was supposed to perform a simple division of two integers to return a parameter value between zero and one. But Java uses integer division, i.e., it skips the remainder. Thus, the value was always either zero or one, but nothing in-between. It took me days to figure that out.

Save yourself the debugging time by memorizing the following rule once and for all.
The ‘//’ operator performs integer division and the ‘/’ operator performs float division. An example for integer division is 50 // 11 = 4. An example for float division is 50 / 11 = 4.545454545454546.

Although the puzzle seems simple, more than twenty percent of the Finxter users cannot solve it.

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