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Python

Posted by nicole lumpkin
nicole lumpkin
Courses Plus Student 5,328 Points

int(some_float) vs. int(input(some_float))

When you do this:

int(3.0)
>>> 3

But when you do this:

int(input("Enter some float: ") # As the user I'll enter 3.0 again
>>>ValueError: invalid literal for int() with base 10: '3.0'

What's going on!?!? Thanks :)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,468 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,468 Points

int works on floats and strings that are integers. It does not work on strings that are floats. 

>>> int(3.0)
3
>>> int("3.0")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for int() with base 10: '3.0'
>>> float("3.0")
3.0
>>> int(float("3.0"))
3
>>>

Since you're asking for a float use float() first, then convert to an int.

nicole lumpkin
nicole lumpkin
Courses Plus Student 5,328 Points

Thanks so much!!