Update app.py

app.py

@@ -1,4 +1,4 @@
-import streamlit as st
+import gradio as gr
 import pandas as pd
 
 # Grade to grade point mapping
@@ -9,96 +9,69 @@ grade_points = {
     "D+": 1.3, "D": 1.0, "F": 0.0
 }
 
-# Configure page
-st.set_page_config(page_title="GPA/CGPA Calculator", layout="wide")
-
-# Title and description
-st.markdown("""
-    <h1 style='text-align: center; color: #4CAF50;'>📊 GPA / CGPA Calculator</h1>
-    <p style='text-align: center;'>Add your current subjects and optionally previous semester GPA to calculate your CGPA</p>
-""", unsafe_allow_html=True)
-
-# Initialize session state
-if "subjects" not in st.session_state:
-    st.session_state.subjects = []
-
-# Optional previous semester data
-with st.expander("📚 Add Previous Semester Data (Optional)", expanded=False):
-    prev_credits = st.number_input("Total Credit Hours from Previous Semesters", 
-                                 min_value=0.0, step=0.5, value=0.0)
-    prev_gpa = st.number_input("Cumulative GPA from Previous Semesters", 
-                             min_value=0.0, max_value=4.0, step=0.01, value=0.0)
-
-# Subject form
-with st.form("subject_form", clear_on_submit=True):
-    col1, col2, col3 = st.columns(3)
-    with col1:
-        subject = st.text_input("Subject Name", placeholder="e.g., Mathematics")
-    with col2:
-        grade = st.selectbox("Grade", list(grade_points.keys()))
-    with col3:
-        credit = st.number_input("Credit Hours", min_value=0.5, max_value=6.0, step=0.5, value=3.0)
-
-    submitted = st.form_submit_button("➕ Add Subject")
+def calculate_gpa(subjects, prev_credits=0, prev_gpa=0):
+    if not subjects:
+        return 0, 0
     
-    if submitted:
-        if not subject.strip():
-            st.error("Please enter a subject name")
-        elif credit <= 0:
-            st.error("Credit hours must be positive")
-        else:
-            st.session_state.subjects.append({
-                "Subject": subject.strip(),
-                "Grade": grade,
-                "Credit": credit
-            })
-            st.success(f"Added {subject.strip()} ({grade}, {credit} credits)")
-
-# Display current subjects
-if st.session_state.subjects:
-    st.markdown("### 🧾 Current Semester Subjects")
-    df = pd.DataFrame(st.session_state.subjects)
-    st.dataframe(df, use_container_width=True, hide_index=True)
+    df = pd.DataFrame(subjects)
+    df['Points'] = df['Grade'].map(grade_points) * df['Credit']
+    current_points = df['Points'].sum()
+    current_credits = df['Credit'].sum()
+    current_gpa = round(current_points / current_credits, 2) if current_credits > 0 else 0
     
-    # Calculate current semester GPA
-    try:
-        current_points = sum(grade_points[row["Grade"]] * row["Credit"] for row in st.session_state.subjects)
-        current_credits = sum(row["Credit"] for row in st.session_state.subjects)
-        current_gpa = round(current_points / current_credits, 2)
-        
-        # Calculate CGPA (if previous data exists)
-        if prev_credits > 0:
-            total_credits = prev_credits + current_credits
-            total_points = (prev_gpa * prev_credits) + current_points
-            cgpa = round(total_points / total_credits, 2)
-        else:
-            cgpa = current_gpa
-        
-        # Display results in a nice card
-        st.markdown(f"""
-            <div style="background-color:#f0f2f6;padding:20px;border-radius:10px;margin-top:20px;">
-                <h3>📘 Current Semester GPA: <span style="color:#2196F3;">{current_gpa:.2f}</span></h3>
-                <h3>🌟 Cumulative GPA (CGPA): <span style="color:#4CAF50;">{cgpa:.2f}</span></h3>
-                <p>Total Credits: {current_credits + prev_credits}</p>
-            </div>
-        """, unsafe_allow_html=True)
-        
-    except ZeroDivisionError:
-        st.error("Error: Cannot calculate GPA with zero credit hours")
-
-else:
-    st.info("ℹ️ Add at least one subject to calculate your GPA")
+    if prev_credits > 0:
+        total_credits = prev_credits + current_credits
+        cgpa = round((prev_gpa * prev_credits + current_points) / total_credits, 2)
+    else:
+        cgpa = current_gpa
+    
+    return current_gpa, cgpa
 
-# Clear button (only shown when there are subjects)
-if st.session_state.subjects:
-    if st.button("🗑️ Clear All Subjects", type="primary"):
-        st.session_state.subjects = []
-        st.rerun()
+with gr.Blocks(title="GPA Calculator") as demo:
+    gr.Markdown("# 📊 GPA/CGPA Calculator")
+    
+    with gr.Row():
+        with gr.Column():
+            subject = gr.Textbox(label="Subject Name")
+            grade = gr.Dropdown(list(grade_points.keys()), label="Grade")
+            credit = gr.Number(3.0, label="Credit Hours", minimum=0.5, step=0.5)
+            add_btn = gr.Button("Add Subject")
+            
+        with gr.Column():
+            subjects_table = gr.Dataframe(headers=["Subject", "Grade", "Credit"])
+            clear_btn = gr.Button("Clear All")
+    
+    with gr.Accordion("Previous Semester Data (Optional)", open=False):
+        prev_credits = gr.Number(0, label="Previous Total Credits")
+        prev_gpa = gr.Number(0, label="Previous GPA", minimum=0, maximum=4.0)
+    
+    calculate_btn = gr.Button("Calculate GPA")
+    
+    with gr.Row():
+        current_gpa = gr.Number(label="Current Semester GPA")
+        overall_cgpa = gr.Number(label="Overall CGPA")
+    
+    subjects = gr.State([])
+    
+    def add_subject(subject, grade, credit, existing_subjects):
+        new_subject = {"Subject": subject, "Grade": grade, "Credit": credit}
+        return existing_subjects + [new_subject], pd.DataFrame(existing_subjects + [new_subject])
+    
+    add_btn.click(
+        add_subject,
+        inputs=[subject, grade, credit, subjects],
+        outputs=[subjects, subjects_table]
+    )
+    
+    clear_btn.click(
+        lambda: ([], pd.DataFrame(columns=["Subject", "Grade", "Credit"])),
+        outputs=[subjects, subjects_table]
+    )
+    
+    calculate_btn.click(
+        calculate_gpa,
+        inputs=[subjects, prev_credits, prev_gpa],
+        outputs=[current_gpa, overall_cgpa]
+    )
 
-# Footer
-st.markdown("---")
-st.markdown("""
-    <div style="text-align: center; color: #777; font-size: 0.9em;">
-        <p>GPA Calculator • Grades: A (4.0) to F (0.0)</p>
-    </div>
-""", unsafe_allow_html=True)
+demo.launch()