Function Pointer in Python
In python, everything is object, everything means everything.
If we create a variable of any type like int, float, str etc, that is also an object.
So, functions are also objects in python.
As we know that every object has its own id, so we can access and store that id to a variable.
# let's careate a function def myfun(): print("Hello from function") # call the function myfun() # print the id of function print(id(myfun)) # access the id and store in varaible fun = myfun notice, not using paranthesis ''' now, this fun is pointing to the function myfun(), means, we can access and execute the function by calling fun allso''' print('accessing through fun') fun()OUTPUT
Hello from function 46541528 accessing through fun Hello from function
In the above program,
fun is function pointer, that is pointing to a function i.e.
Above code clearly showing that we can store and access the function from another variable. The variable which points to a function is called function pointer.
def myfun(): print("Hello from myfun") def myfun1(arg1): print("I accept one argument arg1 :", arg1) f = myfun f1 = myfun1 f() f1("Hello")OUTPUT
Hello from myfun I accept one argument arg1 : Hello
Next chapter is Anonymous Function
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