"# week4python"

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📂 File Read & Write with Error Handling

This Python program demonstrates how to read from a file, modify its contents, and write the result to a new file while handling errors gracefully.

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Features

• Reads text from a user-specified file.

• Converts the content to uppercase (as an example of modification).

• Writes the modified text to a new file prefixed with modified_.

• Handles common errors such as:

  • File not found
  • Permission issues
  • Unexpected errors

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How to Run

1. Save the script as file_handler.py.
2. Open your terminal and run:

python file_handler.py

3. Enter the name of the file you want to read.
4. If the file exists, a new file (e.g., modified_example.txt) will be created with the modified content.

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Example

Input file (example.txt):

Hello world!
Python is fun.

Output file (modified_example.txt):

HELLO WORLD!
PYTHON IS FUN.

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Skills Practiced

• File input/output (I/O) in Python
• Exception handling (try/except)
• Building robust, error-proof programs