wrote the factorial function

[mrakhsha]

No description provided.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@0f001e7). Click here to learn what that means.
The diff coverage is 80%.

@@          Coverage Diff           @@
##             master    #6   +/-   ##
======================================
  Coverage          ?   75%           
======================================
  Files             ?     1           
  Lines             ?    16           
  Branches          ?     3           
======================================
  Hits              ?    12           
  Misses            ?     3           
  Partials          ?     1

Impacted Files	Coverage Δ
factorial.py	75% <80%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0f001e7...f0da6b2. Read the comment docs.

[mrakhsha]

removed unnecessary if and spaces