text: """
  
  Python File Input Output[ 21 exercises]
  
  1. Write a Python program to read an entire text file.
  
  
  2. Write a Python program to read first n lines of a file.
  
  
  3. Write a Python program to append text to a file and display the text.
  
  
  4. Write a Python program to read last n lines of a file.
  
  
  5. Write a Python program to read a file line by line and store it into a list.
  
  
  6. Write a Python program to read a file line by line store it into a variable.
  
  
  7. Write a Python program to read a file line by line store it into an array.
  
  
  8. Write a python program to find the longest words.
  
  
  9. Write a Python program to count the number of lines in a text file.
  
  
  10. Write a Python program to count the frequency of words in a file.
  
  
  11. Write a Python program to get the file size of a plain file.
  
  
  12. Write a Python program to write a list to a file.
  
  
  13. Write a Python program to copy the contents of a file to another file .
  
  
  14. Write a Python program to combine each line from first file with the corresponding line in second file.
  
  
  15. Write a Python program to read a random line from a file.
  
  
  16. Write a Python program to assess if a file is closed or not.
  
  
  17. Write a Python program to remove newline characters from a file.
  
  
  18. Write a Python program that takes a text file as input and returns the number of words of a given text file.
  Note: Some words can be separated by a comma with no space.
  
  
  19. Write a Python program to extract characters from various text files and puts them into a list.
  
  
  20. Write a Python program to generate 26 text files named A.txt, B.txt, and so on up to Z.txt.
  
  
  21. Write a Python program to create a file where all letters of English alphabet are listed by specified number of letters on each line.
  
  
  """