Python Modules-

  • – Module is a collection of one or set of programs.
  • – “import” keyword is used to include the module into our program.
  • – If two module names are common then it will override the first module with the updated one.

Ex-

Class Name Is First.Py-

def test1():
    print("1st module test1")

def test2():
    print("1st module test2")

Class Name Is Second.Py-

def test1():
    print("2nd module test1")

def test2():
    print("2nd module test2")

Class Name Is Third.Py-

import First, Second
First.test1()
First.test2()
Second.test1()
Second.test2()

Output-
	1st module test1
	1st module test2
	2nd module test1
	2nd module test2

Another Way Of Importing The Modules

  • – We can use “from” keyword to import the module.
  • – When we will use “from” keyword to import the module then there is no need to specify the imported modules name explicitly in the file.

Ex-

-----OneEx.py
class Test1:
    def test1(): # Static method
        print("One-Test1-test1")

class Test2:
    def test2(self): # Instance method
        print("One-Test2-test2")



-------TwoEx.py
class Test1:
    def test1(): # Static method
        print("Two-Test1-test1")

class Test2:
    def test3(self): # Instance method
        print("Two-Test2-test3")
		
-------ThreeEx.py
from TwoEx import Test1, Test2
from OneEx import Test1, Test2

def main():
    Test1.test1()
    obj = Test2()
    # obj.test3() # will give error AttributeError: 'B' object has no attribute 'test3'
    obj.test2()
main()

Output-
	One-Test1-test1
	One-Test2-test2

Notes-

It completely overrides with the latest file if both the modules is having the same class name. So it is recommended to use from if we have unique classes.

Back
Next
Menu