Create app.py

app.py

@@ -0,0 +1,88 @@
+__author__ = 'Jeremy Atia'
+
+import sys
+import pandas as pd
+import streamlit as st
+from users import Users
+from leaderboard import LeaderBoard
+from templates import overview, data, evaluation
+from streamlit.cli import main as stmain
+from config import Y_TEST_GOOGLE_PUBLIC_LINK, SKLEARN_SCORER, GREATER_IS_BETTER, SKLEARN_ADDITIONAL_PARAMETERS
+
+@st.cache
+def load_target(google_link: str) -> pd.DataFrame:
+    url='https://drive.google.com/uc?id=' + google_link.split('/')[-2]
+    y_test = pd.read_csv(url, index_col=0)
+    return y_test
+
+
+def evaluate(y_true, y_pred, callable, additional_parameters=SKLEARN_ADDITIONAL_PARAMETERS):
+    return callable(y_true, y_pred, **additional_parameters)
+
+
+def main():
+    st.header('Datathon Platform')
+    ldb = LeaderBoard()
+    users = Users()
+
+    # Sidebar Navigation
+    st.sidebar.title('Navigation')
+    options = st.sidebar.radio('Select a page:',
+                               ['Overview', 'Data', 'Evaluation', 'Submit'])
+
+    if options in ['Overview', 'Data', 'Evaluation']:
+        st.markdown(eval(options.lower()), unsafe_allow_html=True)
+
+    else:
+        with st.sidebar:
+            login = st.text_input('login')
+            password = st.text_input('password')
+
+        if users.exists(login, password):
+            st.write('Welcome', login)
+            st.markdown('Submit the test predictions as a csv file ordered the same way as given, in the example.')
+            
+            if users.is_admin(login, password):
+                with st.sidebar:
+                    st.write("***************")
+                    st.write("Manage the app")
+                    pause_datathon = st.checkbox("Pause Datathon", value=not(is_datathon_running()))
+                    change_datathon_status(pause_datathon)
+
+            uploaded_file = st.file_uploader('Predictions', type='csv', accept_multiple_files=False)
+            leaderboard = ldb.get()
+            if uploaded_file is not None and is_datathon_running():
+                y_pred = pd.read_csv(uploaded_file, index_col=0)
+                y_test = load_target(google_link=Y_TEST_GOOGLE_PUBLIC_LINK)
+                score = evaluate(y_test, y_pred, callable=SKLEARN_SCORER)
+                st.write("Your score is", score)
+                leaderboard = ldb.edit(leaderboard, id=login, score=score)
+
+            with st.expander("Show leaderboard", expanded=True):
+                st.write(ldb.show(leaderboard, ascending=not(GREATER_IS_BETTER)))
+        else:
+            st.info("Please enter a valid login/password on the left side bar.")
+
+def is_datathon_running() -> bool:
+    with open('STATUS_DATATHON.txt', 'r') as f:
+        content = f.readline()
+    if content == 'running':
+        return True
+    else:
+        return False
+
+def change_datathon_status(pause_datathon: bool) -> None:
+    if pause_datathon:
+        with open('STATUS_DATATHON.txt', 'w') as f:
+            f.write('pause')
+    else:
+        with open('STATUS_DATATHON.txt', 'w') as f:
+            f.write('running')
+
+
+if __name__ == '__main__':
+    if st._is_running_with_streamlit:
+        main()
+    else:
+        sys.argv = ["streamlit", "run", sys.argv[0]]
+        sys.exit(stmain())