Update app.py

app.py

@@ -5,6 +5,8 @@ import os
 print(f"pip3 uninstall scepter")
 results = os.popen(f"pip3 uninstall scepter -y")
 print(results.readlines())
+results = os.popen(f"pip3 install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple")
+print(results.readlines())
 results = os.popen(f"pip3 install scepter -i https://pypi.tuna.tsinghua.edu.cn/simple")
 print(results.readlines())
 import random