map(int, ..) 与 int() 的区别

>>> map(int,'0')

[0]

>>> int('-1')

-1

>>> map(int, l[1])

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for int() with base 10: '.'

>>> map(int, '-1')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for int() with base 10: '-'

>>> map(int, '1.0')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for int() with base 10: '.'

>>> int('1.0')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for int() with base 10: '1.0'

>>> map(int, ['1.0'])

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

ValueError: invalid literal for int() with base 10: '1.0'

>>> map(int, ['-1'])

[-1]