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1. Read File2. Write File3. Append to File4. Read CSV File5. Write CSV File6. JSON Read7. JSON Write8. File Copy9. File Rename10. Read Binary File11. Write Binary File12. Count Words in File13. Count Lines in File14. Count Characters in File15. Search Substring in File16. Iterate File Lines17. File Metadata18. File Compression19. File Decompression20. Delete File

File Decompression in Python

Decompress a gzip file back to plain text.

IntermediateFile Handling ProgramsExample 19 of 20
file-decompression.py
1# Program to decompress a gzip file
2

3import gzip
4

5src = input("Enter source gzip filename: ")
6dst = input("Enter destination text filename: ")
7

8try:
9    with gzip.open(src, "rb") as f_in, open(dst, "wb") as f_out:
10        f_out.writelines(f_in)
11    print("Decompressed", src, "to", dst)
12except FileNotFoundError:
13    print("Source gzip file not found.")

Output

Enter source gzip filename: notes.txt.gz
Enter destination text filename: notes_copy.txt
Decompressed notes.txt.gz to notes_copy.txt

What's going on

Reverses the compression process by reading from gzip and writing raw bytes to a normal file.

After this program

If the idea is still fuzzy, read Day 14: File Handling in the Python course. For a short check, try the Python quiz (300 questions). Stay with all 20 file handling programs, or see every topic on Python exercises.

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