Python Tutorials Are Translated into Uyghur

[keramjan]

1. All the Python tutorials are translated to Uyghur.
2. All the translations are reviewed and edited by once. More reviews are coming next.

[ronreiter]

Closing: The Uyghur translation effort is appreciated, but the Expected Output sections contain raw test assertion code (Ex().check_object(...)) instead of actual expected output text. This would break the exercise runner. Please replace the Expected Output sections with the actual expected output strings and resubmit.