How to determine whether it is a string in python

In python, you can use the isinstance() function to determine whether it is a string. The syntax format is "isinstance(object, basestring)"; the isinstance() function is used to determine whether an object is a known type. .

The operating environment of this tutorial: windows7 system, python3 version, DELL G3 computer

python determines whether it is a string

>>> s = 'abc' >>> isinstance(s,basestring) #判断是否是字符串型

Output:

True

python isinstance()

isinstance() function to determine whether an object is an Known type, similar to type().

Syntax:

isinstance(object, classinfo)

Parameters:

object -- Instance object. classinfo -- can be a direct or indirect class name, a primitive type, or a tuple of them.

Return value:

If the type of the object is the same as the type of parameter two (classinfo), it returns True, otherwise it returns False. Related recommendations:Python3 video tutorial

Example:

>>> isinstance(1, int)　　#判断是否是int型 True >>> isinstance(1.0, float) #判断是否是float型 True >>> s = 'hello' >>> isinstance(s,basestring) #判断是否是字符串型 True >>>isinstance(s,dict) #判断对象a是否为字典，如果为真，会打印True，如为假,打印False。 False

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