Create app.py

app.py

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+import streamlit as st
+
+# Grade to points mapping
+grade_points = {
+    'A+': 4.0,
+    'A': 4.0,
+    'A-': 3.7,
+    'B+': 3.3,
+    'B': 3.0,
+    'B-': 2.7,
+    'C+': 2.3,
+    'C': 2.0,
+    'C-': 1.7,
+    'D': 1.0,
+    'F': 0.0
+}
+
+# Initialize session state
+if 'courses' not in st.session_state:
+    st.session_state.courses = []
+
+st.title("🎓 GPA Calculator")
+st.subheader("Calculate your Semester GPA")
+
+# Course input form
+with st.form("course_form"):
+    col1, col2, col3 = st.columns([3, 1, 1])
+    with col1:
+        course_name = st.text_input("Course Name (optional)", key=f"name_{len(st.session_state.courses)}")
+    with col2:
+        credits = st.number_input("Credits", min_value=1, max_value=5, value=3, key=f"credits_{len(st.session_state.courses)}")
+    with col3:
+        grade = st.selectbox("Grade", list(grade_points.keys()), key=f"grade_{len(st.session_state.courses)}")
+    
+    submitted = st.form_submit_button("Add Course")
+    if submitted:
+        st.session_state.courses.append({
+            'name': course_name,
+            'credits': credits,
+            'grade': grade
+        })
+
+# Display entered courses
+if st.session_state.courses:
+    st.write("### Entered Courses")
+    for i, course in enumerate(st.session_state.courses, 1):
+        with st.expander(f"Course {i}: {course['name'] or 'Unnamed Course'}"):
+            col1, col2, col3 = st.columns([3, 1, 1])
+            col1.write(f"Course Name: {course['name'] or 'N/A'}")
+            col2.write(f"Credits: {course['credits']}")
+            col3.write(f"Grade: {course['grade']}")
+
+# Calculate GPA
+if st.button("Calculate GPA"):
+    total_points = 0
+    total_credits = 0
+    
+    for course in st.session_state.courses:
+        points = grade_points[course['grade']]
+        total_points += points * course['credits']
+        total_credits += course['credits']
+    
+    if total_credits == 0:
+        st.error("Please add at least one course with credits")
+    else:
+        gpa = total_points / total_credits
+        st.success(f"Your GPA is: **{gpa:.2f}**")
+        
+        # Display detailed breakdown
+        st.write("### Breakdown")
+        st.write(f"Total Quality Points: {total_points:.2f}")
+        st.write(f"Total Credits: {total_credits}")
+        st.write(f"GPA: {gpa:.2f}")
+
+# Reset button
+if st.button("Reset All Courses"):
+    st.session_state.courses = []
+    st.experimental_rerun()