python如何判断变量是否是字符串 我怎样才能判断一个Python变量是一个字符串或列表
python\u600e\u4e48\u5224\u65ad\u53d8\u91cf\u662f\u5426\u4e3a\u5b57\u7b26\u4e32Python\u4e2d\u7684\u6570\u636e\u7c7b\u578b\u6709\u6570\u5b57\u3001\u5b57\u7b26\u4e32\uff0c\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u3001\u96c6\u5408\u7b49\u3002\u6709\u4e24\u79cd\u65b9\u6cd5\u5224\u65ad\u4e00\u4e2a\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u3002\u4e24\u79cd\u65b9\u6cd5\uff1a
\u7b2c\u4e00\u79cd\u65b9\u6cd5\uff1a
\u7b2c\u4e8c\u79cd\u65b9\u6cd5\uff1a
python\u5b98\u65b9\u6587\u6863\u5728\u8bf4\u660etype\u51fd\u6570\u7684\u7528\u6cd5\u65f6\uff0c\u660e\u6587\u63a8\u8350\u7528isinstance\u6d4b\u8bd5\u5bf9\u8c61\u7c7b\u578b\u3002
isinstance\u4f3c\u4e4e\u4e0d\u662f\u8fd9\u4e48\u7528\u7684\u3002 \u6211\u901a\u5e38\u7684\u505a\u6cd5\u662f\u7528typex=int(5)if type(x)==int: print " x is interger. "else: print "false."isinstance\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u4e00\u4e2a\u53d8\u91cf\u662f\u5426\u5c5e\u4e8e\u4e00\u4e2a\u7c7b\u3002 \u5728python\u91cc\u5e94\u8be5\u662f\u6b63\u786e\u7684\u3002if type(x)==list:passif type(x)==dict:pass
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python中，判断某变量的数据类型是否为字符串，可用isinstance()函数，也可通过比较 type(x) == type(‘a’)的值来判断。
第一种方法：
第二种方法：
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