The main advantage of explicit module reloading is we can ensure that updated version is

always available to our program.

Finding members of module by using dir() function:

Python provides inbuilt function dir() to list out all members of current module or a

specified module.

dir() ===>To list out all members of current module
dir(moduleName)==>To list out all members of specified module

Eg 1: test.py

e__', '__package__', '__spec__', 'f1', 'x', 'y']

Eg 2: To display members of particular module:

durgamath.py:

1) x=888

2)

3) def add(a,b):
4) print("The Sum:",a+b)

5)

6) def product(a,b):
7) print("The Product:",a*b)

test.py:

Note: For every module at the time of execution Python interpreter will add some special

properties automatically for internal use.

Eg: __builtins__,__cached__,'__doc__,__file__, __loader__, __name__,__package__,

__spec__

Based on our requirement we can access these properties also in our program.

Eg: test.py:

test.py

1) <_frozen_importlib_external.SourceFileLoader object at 0x00572170>
2) __main__
3) None
4) None

The Special variable __name__:

For every Python program , a special variable __name__ will be added internally.

This variable stores information regarding whether the program is executed as an

individual program or as a module.

If the program executed as an individual program then the value of this variable is

__main__

If the program executed as a module from some other program then the value of this

variable is the name of module where it is defined.

Hence by using this __name__ variable we can identify whether the program executed

directly or as a module.