Update app.py

app.py

@@ -4,6 +4,14 @@ import appStore.coherence as coherence
 import appStore.info as info
 from appStore.multiapp import MultiApp
 import streamlit as st
+import pkg_resources
+
+def tmp_d():
+    installed_packages = pkg_resources.working_set 
+    list_ = ""
+     for package in installed_packages:
+           list_ = list_ + f"{package.key}=={package.version}\n"
+    st.download_button('Download Requirements', list_, file_name='requirements.txt')
 
 st.set_page_config(page_title = 'Climate Policy Intelligence', 
                    initial_sidebar_state='expanded', layout="wide") 
@@ -14,5 +22,6 @@ app.add_app("About","house", info.app)
 app.add_app("Search","search", keyword_search.app)
 app.add_app("SDG Analysis","gear",sdg_analysis.app)
 app.add_app("NDC Comparison","exclude", coherence.app)
+app.add_app("download","gear",tmp_d)
 
 app.run()