Create app.py

app.py

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+import streamlit as st
+
+# Function to calculate grade based on percentage
+def calculate_grade(percentage):
+    if percentage >= 90:
+        return "A+"
+    elif percentage >= 80:
+        return "A"
+    elif percentage >= 70:
+        return "B"
+    elif percentage >= 60:
+        return "C"
+    elif percentage >= 50:
+        return "D"
+    else:
+        return "F"
+
+# Main application
+def main():
+    st.title("Student Result Application")
+    st.subheader("Enter student details and marks to calculate the result.")
+
+    # Input fields for student details
+    student_name = st.text_input("Enter the student's name:")
+    roll_number = st.text_input("Enter the roll number:")
+    num_subjects = st.number_input("Enter the number of subjects:", min_value=1, step=1)
+
+    # Marks input section
+    if num_subjects > 0:
+        marks = []
+        for i in range(num_subjects):
+            marks.append(st.number_input(f"Enter marks for subject {i + 1}:", min_value=0.0, max_value=100.0, step=0.1))
+
+        if st.button("Calculate Result"):
+            # Calculate total marks and percentage
+            total_marks = sum(marks)
+            max_marks = num_subjects * 100
+            percentage = (total_marks / max_marks) * 100
+
+            # Calculate grade
+            grade = calculate_grade(percentage)
+
+            # Display the result
+            st.success("Result Calculated Successfully!")
+            st.write("### Student Details")
+            st.write(f"**Name:** {student_name}")
+            st.write(f"**Roll Number:** {roll_number}")
+            st.write("### Result")
+            st.write(f"**Total Marks:** {total_marks}/{max_marks}")
+            st.write(f"**Percentage:** {percentage:.2f}%")
+            st.write(f"**Grade:** {grade}")
+
+            # Option to save result
+            save_result = st.checkbox("Save result as a text file")
+            if save_result:
+                result_text = (
+                    f"--- Result ---\n"
+                    f"Name: {student_name}\n"
+                    f"Roll Number: {roll_number}\n"
+                    f"Total Marks: {total_marks}/{max_marks}\n"
+                    f"Percentage: {percentage:.2f}%\n"
+                    f"Grade: {grade}\n"
+                )
+                with open(f"{student_name}_result.txt", "w") as file:
+                    file.write(result_text)
+                st.success("Result saved successfully! Check your application directory.")
+
+# Run the app
+if __name__ == "__main__":
+    main()