Taking the floor of a float

Question

I have found two ways of taking floors in Python:

3.1415 // 1 

and

import math math.floor(3.1415) 

The problem with the first approach is that it return a float (namely 3.0). The second approach feels clumsy and too long.

Are there alternative solutions for taking floors in Python?

Answer 1

As long as your numbers are positive, you can simply convert to an int to round down to the next integer:

>>> int(3.1415) 3 

For negative integers, this will round up, though.

Answer 2

You can call int() on the float to cast to the lower int (not obviously the floor but more elegant)

int(3.745)  #3 

Alternatively call int on the floor result.

from math import floor  f1 = 3.1415 f2 = 3.7415  print floor(f1)       # 3.0 print int(floor(f1))  # 3 print int(f1)         # 3 print int(f2)         # 3 (some people may expect 4 here) print int(floor(f2))  # 3 

http://docs.python.org/library/functions.html#int