File handling, Reading and Writing access with example.

4. Explain the concept of file handling. Also explain reading and writing access with suitable example.

Answer:

File Handling in Python

File handling lets you read from and write to files on your computer.

Modes:

• 'r' → Read Mode (opens the file for reading)
• 'w' → Write Mode (opens the file for writing — overwrites existing content)

Example:

Writing to a File

with open('sample.txt', 'w') as f:
    f.write('Hello, world!')

This creates a file named sample.txt (or overwrites if it exists) and writes the text "Hello, world!" into it.

Reading from a File

with open('sample.txt', 'r') as f:
    content = f.read()
    print(content)

This reads the content of sample.txt and prints:
Hello, world!