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Python File Input Output: Exercises, Practice, Solution

Python File Input Output[ 21 exercises with solution]

[An editor is available at the bottom of the page to write and execute the scripts.]

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

More to Come !

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.



Python: Tips of the Day

Python: Time library

Time library provides lots of time related functions and methods and is good to know whether you're developing a website or apps and games or working with data science or trading financial markets. Time is essential in most development pursuits and Python's standard time library comes very handy for that.

Let's check out a few simple examples:

moment=time.strftime("%Y-%b-%d__%H_%M_%S",time.localtime())

import time
time_now=time.strftime("%H:%M:%S",time.localtime())
print(time_now)
date_now=time.strftime("%Y-%b-%d",time.localtime())
print(date_now)

Output:

11:36:34
2020-Nov-30