Python File Handling, core operations performed on files

7. The with open statement in Python: what it does and why it's so useful for files.


8. How can I read a text file line by line in Python without using too much memory?


9. Using Python's readlines() to grab all lines from a file into a list.


10. read(), readline(), and readlines() in Python: what they do and when should I use each?


11. How do I count how many times each word appears in a text file using Python?


12. Python: How to find out how many times a specific word shows up in a file.


13. Finding the word that appears most often in a Python text file, even with punctuation marks.


14. How can I get a list of all the unique words in a text file using Python, ignoring whether they're capitalized or not?


15. Python: Counting how many times each duplicate word appears in a text file.


16. Working with CSV files in Python: how to read data, write data, and handle the top row (headers).


17. Python: Reading a CSV file and turning each row into a dictionary.


18. How to take a list of dictionaries in Python and save it into a CSV file.


19. Dealing with JSON files in Python: how to read the data inside and understand it.


20. Python: How to save a dictionary into a JSON file.


21. Before I try to open a file in Python, how can I check if it actually exists?


22. Python's FileNotFoundError: what causes this error and the best ways to handle it in your code.


23. How do I delete a file using Python code (using the os module)?


24. Python file paths explained: understanding the difference between absolute and relative paths, and how to use os.path.


25. A Python script to tell me the total number of lines, words, and letters in a text file, with clear results.