Test download in column

app.py

@@ -456,6 +456,16 @@ with t1:
     with c1t1:
         st.write("Left Left")
         st.button("Hi")
+        f = open("test.txt",'w+')
+        f.write("Hello there")
+        f.close()
+        with open("test.txt") as f:
+            st.download_button(
+                    "Save As PDF",
+                    f,
+                    'sonogram-'+currPlainName+'.txt',
+                    key='download-txt',
+                )
     with c2t1:
         st.write("Left Right")
         st.button("There")