Exploring Python's Modules and Packages: Day 29 Guide

Introduction:

Hello fellow coders! Today, we will discuss something more on Module and Packages in my Python journey, and I'm excited to share my experiences with you. In this series, I'll document my progress, successes, and setbacks. Join me as I explore the world of Python!

Modules & Package :

. A group of functions, variables and classes saved to a file, which is nothing but module.

.Every Python file (.py) acts as a module.

Eg:

jithonmath.py
no  = 77

def add(a,b):
        print ("sum =", a+b)

def avg(a,b):
        print ("average =", (a+b)/ 2)

jithonmath modules contains one variable & two functions like add, avg

if we want to used members of modules in our program then we should import that module.

syntax :

import modulename

we can access members by using module name

modulename. variable

modulename . functionname ()

Eg :

test.py
import jithonmath

print (jithonmath.no)
jithonmath.add (20,30)

jithonmath.avg (5,2)

Note:

whenever we are using a module in our program, for that module compiled file will be generated and stored in the hard disk permanently.

Renaming a module at the time of import (module alias):

Eg :

import jithonmath as jm

print (jm.no)
jm.add (20,30)

jm.avg (5,2)

here jithonmath is orginal module name and jm is alias name we can access members by using alias name jm

the advantages of this is we can access members directly without using module .

from ... import

We can import particular members of module by using from ... import .

The main advantage of this is we can access members directly without using module name.

EXAMPLE :

from  jithonmath import no, avg

print (no)

avg (5,2)
#add (2,3) #NameError

We can import all members of a module as follows from jithonmath import .

Example:

from  jithonmath import *

print (no)

avg (5,2)
add (2,3)

Various possibilities of import:

import modulename

import module1,module2,module3

import module1 as m

import module1 as m1,module2 as m2,module3 from module

import member from module

import member1,member2,memebr3 from module

import memeber1 as x from module import *

Challenges :

1. Understanding various types of Modules and packages. .

2. Handling errors.

Resources :

1. Official Python Documentation: Modules and packages.

2. W3Schools' Python Tutorial: Modules and packages.

3. Scaler's Python Courses : Modules and packages.

Goals for Tomorrow :

1. Explore something more on File handling.

Conclusion :

Day 29’s a success!

What are your favorite Python resources? Share in the comments below.

Connect with me :

GitHub: [ github.com/p-archana1 ]

LinkedIn : [ linkedin.com/in/archana-prusty-4aa0b827a ]

twitter : [ x.com/_archana77 ]

Join the conversation :

Share your own learning experiences or ask questions in the comments.

HAPPY LEARNING!!

THANK YOU!!