First full save

app.py

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+import streamlit as st
+import sqlite3
+from passlib.hash import bcrypt
+import pandas as pd
+
+# --- Database functions ---
+def create_usertable():
+    conn = sqlite3.connect('users.db')
+    c = conn.cursor()
+    c.execute('CREATE TABLE IF NOT EXISTS userstable(username TEXT, password TEXT)')
+    conn.commit()
+    conn.close()
+
+def add_userdata(username, password):
+    conn = sqlite3.connect('users.db')
+    c = conn.cursor()
+    c.execute('INSERT INTO userstable(username, password) VALUES (?,?)', (username, password))
+    conn.commit()
+    conn.close()
+
+def login_user(username, password):
+    conn = sqlite3.connect('users.db')
+    c = conn.cursor()
+    c.execute('SELECT password FROM userstable WHERE username =?', (username,))
+    stored_hash = c.fetchone()
+    conn.close()
+    
+    if stored_hash:
+        stored_hash = stored_hash[0]
+        return check_hashes(password, stored_hash)
+    else:
+        return False
+
+def view_all_users():
+    conn = sqlite3.connect('users.db')
+    c = conn.cursor()
+    c.execute('SELECT * FROM userstable')
+    data = c.fetchall()
+    conn.close()
+    return data
+
+# --- Hashing ---
+def make_hashes(password):
+    return bcrypt.hash(password)
+
+def check_hashes(password, hashed_text):
+    return bcrypt.verify(password, hashed_text)
+
+# --- Streamlit UI ---
+st.title("User Authentication System")
+
+create_usertable()
+
+menu = ["Login", "SignUp", "Manage Users"]
+choice = st.sidebar.selectbox("Menu", menu)
+
+if choice == "Login":
+    st.subheader("Login Section")
+    username = st.text_input("User Name")
+    password = st.text_input("Password", type='password')
+    if st.button("Login"):
+        result = login_user(username.lower(), password)
+        if result:
+            st.success("Logged In as {}".format(username))
+        else:
+            st.warning("Incorrect Username/Password")
+
+elif choice == "SignUp":
+    st.subheader("Create New Account")
+    new_user = st.text_input("Username")
+    new_password = st.text_input("Password", type='password')
+    if st.button("Signup"):
+        hashed_new_password = make_hashes(new_password)
+        add_userdata(new_user, hashed_new_password)
+        st.success("You have successfully created a valid Account")
+        st.info("Go to Login Menu to login")
+
+elif choice == "Manage Users":
+    st.subheader("User Management")
+    user_result = view_all_users()
+    clean_db = pd.DataFrame(user_result, columns=["Username", "Password"])
+    st.dataframe(clean_db)

requirements.txt

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+streamlit
+streamlit-authenticator
+passlib
+bcrypt==3.2.0
+pandas