如果给定的键在字典可用,has_key()方法返回true,否则返回false。
语法
以下是has_key()方法的语法:
dict.has_key(key)
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参数
返回值
此方法返回true,如果给定键在字典可用,否则返回false。
例子
下面的例子显示了has_key()方法的使用。
#!/usr/bin/python
dict = {'Name': 'Zara', 'Age': 7}
print "Value : %s" % dict.has_key('Age')
print "Value : %s" % dict.has_key('Sex')
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当我们运行上面的程序,它会产生以下结果:
Value : True
Value : False
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