What are python built-in functions?

Python built-in functions refer to the functions that come with python. Such functions do not need to be defined, and different built-in functions have different functions and can be used directly. Python general built-in functions: id() function, help() function, type() function, dir() function, isinstance() function, ord() function, etc.

Python general built-in function:

id() function: View the memory address of the object

help() function : View help information

type() function: View the type of object; it will not consider the subclass to be a parent class type

isinstance() function: View the object type; it will consider the subclass It is a parent class type

dir() function: View the properties, methods, etc. in the object

ord(): Get the numerical code corresponding to a character

chr (): To realize the conversion from numeric encoding to character

Built-in function of number type:

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