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()
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参数
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)
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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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