add dependency package libffi-devel

sslinux · web-flow · commit b388ef68ec0c · 2019-05-11T08:46:47.000+08:00
diff --git a/PythonEnvironment.md b/PythonEnvironment.md
@@ -98,7 +98,7 @@ $ pip install --egg pyenv
 
 ```bash
 [sslinux@localhost ~]$ sudo yum -y install gdbm-devel openssl-devel \
-sqlite-devel readline-devel zlib-devel bzip2-devel
+sqlite-devel readline-devel zlib-devel bzip2-devel libffi-devel
 ```
 
 **安装python 3.5.2**
