python中的set clear（）-yiteyi-C++库

clear（）方法从集合中删除所有元素。

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语法：

set.clear()
parameters:
The clear() method doesn't take any parameters.
Return:
The clear() method doesn't return any value.

                     # set of letters                   
                     GEEK                               =                               {                               'g'                               ,                               'e'                               ,                               'e'                               ,                               'k'                               ,                               's'                               }                   
                     print                               (                               'GEEK before clear:'                               , GEEK)                   
                             
                     # clearing vowels                   
                     GEEK.clear()                   
                     print                               (                               'GEEK after clear:'                               , GEEK)                   

输出：

GEEK before clear: set(['s', 'e', 'k', 'g'])
GEEK after clear: set([])

申请：

It is used to clear set.

                     # set of letters                   
                     GEEK                               =                               {                               6                               ,                               0                               ,                               4                               ,                               1                               }                   
                     print                               (                               'GEEK before clear:'                               , GEEK)                   
                             
                     # clearing vowels                   
                     GEEK.clear()                   
                     print                               (                               'GEEK after clear:'                               , GEEK)                   

输出：

GEEK before clear: set([0, 1, 4, 6])
GEEK after clear: set([])

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