Class10 - Master File Handling in Python: Opening, Reading, Writing, and More

How to read, write, and manipulate files will elevate your ability to work with real-world data.

In Class 10, we explored one of the most essential concepts in Python programming: File Handling! Learning how to read, write, and manipulate files will elevate your ability to work with real-world data. 💻

📅 Agenda for Today:

1. File Handling 🗂️

• Definition: File handling allows you to interact with files, enabling you to read from or write to files in Python.

File Handling Operations:

1. Opening a File:

   • Syntax:

open('filename', 'mode')

1. • File Path: The location of the file (relative or absolute).

   • Mode:

     • 'r': Read mode (default), used to read the file.

     • 'w': Write mode, used to write to the file (overwrites existing content).

     • 'a': Append mode, used to add content to the end of the file.

2. Two Ways to Open a File:

   • Using open():

file = open('file.txt', 'r')
content = file.read()
file.close()

1. • Using the with keyword (recommended):

with open('file.txt', 'r') as file:
    content = file.read()

1. Reading a File:

   • read(): Reads the entire file content as a single string.

with open('file.txt', 'r') as file:
    content = file.read()

1. • readline(): Reads one line at a time.

with open('file.txt', 'r') as file:
    line = file.readline()

1. • readlines(): Reads all lines into a list.

with open('file.txt', 'r') as file:
    lines = file.readlines()

💡 Stay tuned for Class 10 Recording 📹, and continue building your Python skills by mastering file handling operations! This knowledge is vital for handling data in your projects.

Session 1