Answer to Question #200774 in Python for Anthony Phenomenal

Question

Describe how catching exception can help with file errors. Write three python examples that actually generate file errors in your computer and catch the errors with try: except: blocks. Include the code and output for each example in your post.

Answer 1

1. FileNotFoundError


raised when a file or directory is requested but doesn’t exist.
Example
try:
    file_name = 'myfile.txt'
    with open(file_name) as f:
        print(f)
except:
    print("File Not Found");




2. Exception FileExistsError


Raised when trying to create a file or directory which already exists.
Example:
import os
try:
    file_name = 'myfile.txt'
    
    os.mkdir('./myfile.txt')
except FileExistsError:
    print("File Exists Error")


choose = input('Rewrite y/n')


3. PermissionError
Raised when trying to run an operation without the adequate access rights 
Example
import os
try:
    os.mkdir('admin_data', 000)
    with open('admin_data') as f:
    
    print(f)
except PermissionError:
    print("Access denied")