show loading

app.py

@@ -91,4 +91,8 @@ def decode(ratio, txt_1, txt_2):
 in_1 = st.text_input("A line of Python code.", "x = 1")
 in_2 = st.text_input("Another line of Python code.", "x = 9")
 r = st.slider('Interpolation Ratio')
-st.write(decode(r, in_1, in_2))
+container = st.empty()
+container.write('Loading...')
+out = decode(r, in_1, in_2)
+container.empty()
+st.write(out)