내장함수 - long(x, base=10)

https://docs.python.org/2/library/functions.html#long

class long(x=0)

class long(x, base=10)

long integer class를 리턴한다.

Param이 없는 경우는 0L를 리턴한다.

>>> print long()

0

>>> print long(10)

10

>>> print long('10')

10

>>> print long('10', 10)

10

>>> print long('10', 16)

16

>>> print long('16', 8)

14

>>> print long('16.0', 10)

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for long() with base 10: '16.0'

>>> print long(16.1)

16

>>> print long('16.1')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for long() with base 10: '16.1'