python判断变量是否为数字、字符串、列表、字典等 |
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copy from : https://www.jianshu.com/p/09d94bca8e54 在实际写程序中，经常要对变量类型进行判断，除了用type(变量)这种方法外，还可以用isinstance方法判断： a = [1,2] if 'list' in str(type(a)): print('1') else: print('2') a = 1 b = [1,2,3,4] c = (1,2,3,4) d = {‘a‘:1,‘b‘:2,‘c‘:3} e = "abc" if isinstance(a,int): print "a is int" else: print "a is not int" if isinstance(b,list): print "b is list" else: print "b is not list" if isinstance(c,tuple): print "c is tuple" else: print "c is not tuple" if isinstance(d,dict): print "d is dict" else: print "d is not dict" if isinstance(e,str): print "d is str" else: print "d is not str"作者：阿拉鸡 链接：https://www.jianshu.com/p/09d94bca8e54 来源：简书 著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。 在实际写程序中，经常要对变量类型进行判断，除了用type(变量)这种方法外，还可以用isinstance方法判断： a = [1,2] if 'list' in str(type(a)): print('1') else: print('2') a = 1 b = [1,2,3,4] c = (1,2,3,4) d = {‘a‘:1,‘b‘:2,‘c‘:3} e = "abc" if isinstance(a,int): print "a is int" else: print "a is not int" if isinstance(b,list): print "b is list" else: print "b is not list" if isinstance(c,tuple): print "c is tuple" else: print "c is not tuple" if isinstance(d,dict): print "d is dict" else: print "d is not dict" if isinstance(e,str): print "d is str" else: print "d is not str"作者：阿拉鸡 链接：https://www.jianshu.com/p/09d94bca8e54 来源：简书 著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。 |
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