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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

Finding the most common elements in an iterable:

Example:

# collections.Counter lets you find the most common
# elements in an iterable:

import collections
c = collections.Counter('helloworld')

print(c)

print (c.most_common(3))

Output:

Counter({'l': 3, 'o': 2, 'h': 1, 'e': 1, 'w': 1, 'r': 1, 'd': 1})
[('l', 3), ('o', 2), ('h', 1)]