* Reading & Writing Files in Python*

*Why Learn File Handling* ?

It allows your Python programs to:

- Save user data
- Read logs or configuration files
- Process data stored in .txt, .csv, etc.


*Opening a File*

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

*Always close the file after opening — or use the safer with keyword* .



*Using with (Best Practice)*

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

Using with, the file closes automatically after use.


*Writing to a File*

with open(data.txt, w) as file:
file.write(Hello, Python!)

- 'w' mode overwrites the file
- 'a' mode appends to the file


*Reading Line by Line*

with open(data.txt, r) as file:
for line in file:
print(line.strip())


*Mini Project: Notes Saver*

filename = notes.txt

note = input(Write your note: )

with open(filename, a) as file:
file.write(note + n)

print(Note saved to, filename)

*This tiny app lets the user:*

- Write notes
- Save them in a .txt file
- Append new notes instead of overwriting

How to learn it shap