第一步，知道你的python版本：
如上所示，MSC v.1915，也就是对应下表的_MSC_VER是1915
| Visual Studio version | _MSC_VER |
|---|---|
| Visual Studio 6.0 | 1200 |
| Visual Studio .NET 2002 (7.0) | 1300 |
| Visual Studio .NET 2003 (7.1) | 1310 |
| Visual Studio 2005 (8.0) | 1400 |
| Visual Studio 2008 (9.0) | 1500 |
| Visual Studio 2010 (10.0) | 1600 |
| Visual Studio 2012 (11.0) | 1700 |
| Visual Studio 2013 (12.0) | 1800 |
| Visual Studio 2015 (14.0) | 1900 |
| Visual Studio 2017 RTW (15.0) | 1910 |
| Visual Studio 2017 version 15.3 | 1911 |
| Visual Studio 2017 version 15.5 | 1912 |
| Visual Studio 2017 version 15.6 | 1913 |
| Visual Studio 2017 version 15.7 | 1914 |
| Visual Studio 2017 version 15.8 | 1915 |
| Visual Studio 2017 version 15.9 | 1916 |
| Visual Studio 2019 RTW (16.0) | 1920 |