first full save

app.py

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+# Import necessary libraries
+import streamlit as st
+import sqlite3
+import random
+from datetime import datetime
+
+# Create a connection to the SQLite database
+conn = sqlite3.connect('student_exams.db')
+
+# Create a cursor object
+cur = conn.cursor()
+
+# Create tables if they do not exist
+cur.execute('''
+    CREATE TABLE IF NOT EXISTS students
+    (id_number INTEGER PRIMARY KEY, name TEXT, year INTEGER, section TEXT)
+''')
+
+cur.execute('''
+    CREATE TABLE IF NOT EXISTS exams
+    (id INTEGER PRIMARY KEY, timestamp_create TIMESTAMP, subject TEXT, topic TEXT, type TEXT, num_items INTEGER)
+''')
+
+cur.execute('''
+    CREATE TABLE IF NOT EXISTS attempts
+    (id INTEGER PRIMARY KEY, date_taken TIMESTAMP, exam_id INTEGER, student_id INTEGER, answers TEXT, results TEXT, total_score INTEGER)
+''')
+
+# Insert dummy data
+cur.execute("INSERT OR IGNORE INTO students (id_number, name, year, section) VALUES (1, 'John Doe', 1, 'A')")
+cur.execute("INSERT OR IGNORE INTO exams (id, timestamp_create, subject, topic, type, num_items) VALUES (1, '2022-01-01 00:00:00', 'Math', 'Algebra', 'Multiple Choice', 5)")
+
+# Commit the transaction
+conn.commit()
+
+# Function to get the exam questions
+def get_exam_questions(exam_id):
+    questions = []
+    for i in range(5):  # Assuming 5 questions for simplicity
+        question = {
+            'question': f'Question {i+1}',
+            'options': [f'Option {j+1}' for j in range(4)],
+            'correct_answer': random.choice([f'Option {j+1}' for j in range(4)])
+        }
+        questions.append(question)
+    return questions
+
+# Function to evaluate the answers
+def evaluate_answers(questions, answers):
+    score = 0
+    results = []
+    for i, question in enumerate(questions):
+        if answers[i] == question['correct_answer']:
+            score += 1
+            results.append('Correct')
+        else:
+            results.append('Incorrect')
+    return score, results
+
+# Streamlit app
+st.title('Quiz Interface')
+
+# Get the exam questions
+exam_id = 1
+questions = get_exam_questions(exam_id)
+
+# Initialize the answers
+answers = []
+
+# Display the questions
+for i, question in enumerate(questions):
+    st.write(question['question'])
+    answer = st.selectbox('Select an answer', question['options'], key=i)
+    answers.append(answer)
+
+# Evaluate the answers
+if st.button('Submit'):
+    score, results = evaluate_answers(questions, answers)
+    
+    # Store the attempt data
+    cur.execute("INSERT INTO attempts (date_taken, exam_id, student_id, answers, results, total_score) VALUES (?, ?, ?, ?, ?, ?)",
+                 (datetime.now().strftime("%Y-%m-%d %H:%M:%S"), exam_id, 1, ', '.join(answers), ', '.join(results), score))
+    conn.commit()
+    
+    # Display the summary
+    st.write('Summary:')
+    st.write(f'Total Score: {score}/{len(questions)}')
+    st.write('Results:')
+    for i, result in enumerate(results):
+        st.write(f'Question {i+1}: {result}')
+    
+    # Display the history of previous attempts
+    st.write('History of Previous Attempts:')
+    cur.execute("SELECT date_taken, total_score FROM attempts WHERE exam_id = ? AND student_id = ?", (exam_id, 1))
+    attempts = cur.fetchall()
+    for attempt in attempts:
+        st.write(f'Date: {attempt[0]}, Score: {attempt[1]}/{len(questions)}')
+    
+    # Provide an option to retake the quiz
+    if st.button('Retake Quiz'):
+        answers = []
+        for i, question in enumerate(questions):
+            st.write(question['question'])
+            answer = st.selectbox('Select an answer', question['options'], key=i)
+            answers.append(answer)

requirements.txt

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+streamlit