Round a float and convert it to an integer in a Python2 and Python3 compatible manner

Question

For generating Numpy indexes, I need to round a float to an int.

In Python 2.7, rounding a float gives a float:

>>> round(2.7)
3.0

In Python 3.5, an int is returned:

>>> round(2.7)
3

np.round() always returns a float.

Is int(round(2.7)) the canonical approach to round to an integer in a Python 2/3 compatible way?

Python 3 returns an integer if a single argument is given. Otherwise the type matches the type of the first argument. For example, try `round(2.7, 0)` in Python 3. — Tom Karzes, Apr 02 '16 at 09:25

score 0 · Accepted Answer · edited May 23 '17 at 11:48

0

int(round(2.7)) works for both versions. A similar question but only for Python 2.7 was asked here: Python 2.7: round number to nearest integer - so I would use int(round(x))

edited May 23 '17 at 11:48

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answered Apr 02 '16 at 09:43

Zac S

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Round a float and convert it to an integer in a Python2 and Python3 compatible manner

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