[FS#352] Failed to build Python 3

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Chang Yu-heng (changyuheng) 

Attached to Project - LEDE Project
Summary - Failed to build Python 3
Task Type - Bug Report
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on
 - Software versions of LEDE release, packages, etc.
 - Steps to reproduce
   

I just git pull latest LEDE repo and tried to build a image for MT7620A.
Seemed like the just changed curse library (December 20th) isn't compatible with Python 3.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=352