How to determine whether a number is an integer in python

How to determine whether a number is an integer in python? In fact, Python has two ways to check the type of a variable: the type() function can directly return the variable type; the isinstance() function can be used to determine the type of the variable and returns a Boolean value.

isinstance() function

can be used to determine the type of a variable. It returns a Boolean value. False or True.

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>>>isinstance("123",str)
>>>Flase
>>>isinstance(123,int)
>>>True
>>>isinstance({'123'},list)
>>>False
>>>isinstance(['123'],int)
>>>False

Int, float, etc. are all basic variable types. In fact, classes are also a type of variables. .

type() function

does not determine the type of the variable, but directly returns the type of the variable

>>> type(123)

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