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在Python中操作字典之clear()方法的使用

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2016-06-10 15:11:552120browse

 clear()方法将删除字典中的所有项目(清空字典)
语法

以下是clear()方法的语法:

dict.clear()

参数

  •     NA

返回值

此方法不返回任何值。
例子

下面的例子显示了clear()方法的使用

#!/usr/bin/python

dict = {'Name': 'Zara', 'Age': 7};

print "Start Len : %d" % len(dict)
dict.clear()
print "End Len : %d" % len(dict)

当我们运行上面的程序,它会产生以下结果:

Start Len : 2
End Len : 0

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