Help on built-in function all in module __builtin__:


all(...)

    all(iterable) -> bool

    

    Return True if bool(x) is True for all values x in the iterable.

all(iterable)

Return True if all elements of the iterable are true (or if the iterable is empty). Equivalent to:


def all(iterable):

    for element in iterable:

        if not element:

            return False

    return True

说明:如果iterable的所有元素不为0、''、False或者iterable为空,all(iterable)返回True,否则返回False;

参数iterable:可迭代对象;


>>> all(['a','b','c'])

True

>>> all(['a','','c'])

False

>>> all([1,2,3])

True

>>> all([0,1,2,3])

False

>>> all(('a','b','c'))

True

>>> all(('a','','c'))

False

>>> all((0,1,2,3))

False

>>> all([])

True

>>> all(())

True