pjsip - python error: Unable to find vcvarsall.bat

[laithmoha]

Describe the bug

After installing the PJSIP
Implementing orders, and ensuring that they work properly
I want to implement writing programs through Python and use the PJSIP
After implementing
.
Make
In the PJProject-2.14.1 \ PJSIP-Apps \ SRC \ Python \

Upon implementation
C: \ python27 \ python.exe setup.py instal
An error shows

C: \ pjproject-2.14.1 \ pjsip-Apps \ SRC \ Python> C: \ python27 \ python.exe setup.py install
Running Install
Running Build
Running Build_PY
Running Build_Ext
Building '_PJSUA' EXTENSION
Error: unable to find vcvarsall.bat

Steps to reproduce

pjsua

PJSIP version

2.14.1

Context

windows , python

Log, call stack, etc

none