Update app.py

app.py

@@ -1,5 +1,13 @@
-$ pip install tensorflow
-$ pip install numpy
+import pip
+
+def install(package):
+    if hasattr(pip, 'main'):
+        pip.main(['install', package])
+    else:
+        pip._internal.main(['install', package])
+
+install("tensorflow")
+install("numpy")
 
 import streamlit as st
 import numpy as np