Python function-All ()

All (iterable)

Version: This function appears for the first time in the python2.5 version, and is suitable for 2.5 or more versions, including Python3, compatible with the Python3 version.

Description: If all elements of iterable are not 0, ', false, or iterable null, all (iterable) returns True, otherwise false; The function is equivalent to:

def all (iterable): for    element in iterable:        if not element:            return False    return True

Parameter iterable: an iterative object;

Example:

>>> all ([' A ', ' B ', ' C ', ' d '])  #列表list, the elements are not empty or 0true>>> all ([' A ', ' B ', ', ' d '])  #列表list, There is an empty element false>>> all ([0, 3])  #列表list, there is an element of 0 false  >>> all ((' A ', ' B ', ' C ', ' d '))  #元组tuple, the elements are not empty or 0true>>> all ((' A ', ' B ', ', ' d ')  #元组tuple, there is an empty element false>>> all (0, 1, 2, 3))  #元组tuple, there is an element of 0 false    >>> all ([]) # Empty list true>>> All (()) # Empty tuple True

Note: Empty tuple, empty list return value is true, here is to pay special attention to

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