M1 Assignment

M1/calculator.py

+def add(x, y):
+    return x + y
+
+def subtract(x, y):
+    return x - y
+
+def multiply(x, y):
+    return x * y
+
+def divide(x, y):
+    if y == 0:
+        return "Error: Division by zero"
+    return x / y
+
+def main():
+    print("Welcome to Calculator")
+    print("Operations: +, -, *, /")
+    
+    try:
+        num1 = float(input("Enter first number: "))
+        op = input("Enter operator (+, -, *, /): ")
+        num2 = float(input("Enter second number: "))
+        
+        if op == '+':
+            print("Result:", add(num1, num2))
+        elif op == '-':
+            print("Result:", subtract(num1, num2))
+        elif op == '*':
+            print("Result:", multiply(num1, num2))
+        elif op == '/':
+            print("Result:", divide(num1, num2))
+        else:
+            print("Invalid operator!")
+    except ValueError:
+        print("Please enter valid numbers.")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file

M1/file.py

+import sys
+import os
+
+def parse_file(filename):
+    if not os.path.isfile(filename):
+        print("File not found!")
+        return
+
+    with open(filename, 'r') as file:
+        content = file.read()
+
+    lines = content.split('\n')
+    words = content.split()
+    characters = len(content)
+
+    print(f"\n File Analysis: {filename}")
+    print(f"Lines     : {len(lines)}")
+    print(f"Words     : {len(words)}")
+    print(f"Characters: {characters}")
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Usage: python file_parser.py <filename>")
+    else:
+        parse_file(sys.argv[1])
\ No newline at end of file

M1/sample.txt

+text
+welcom
+123
+test
\ No newline at end of file

M1/student_management.py

+from openpyxl import Workbook, load_workbook
+import os
+from tabulate import tabulate
+
+EXCEL_FILE = "students.xlsx"
+
+class Student:
+    def __init__(self, student_id, name, grade):
+        self.student_id = student_id
+        self.name = name
+        self.grade = grade
+
+    def display(self):
+        return f"{self.student_id} - {self.name} (Grade: {self.grade})"
+
+class StudentManager:
+    def __init__(self):
+        # if not os.path.exists(EXCEL_FILE):
+        #     wb = Workbook()
+        #     ws = wb.active
+        #     ws.title = "Students"
+        #     ws.append(["Student ID", "Name", "Grade"])
+        #     wb.save(EXCEL_FILE)
+
+        self.students = []
+
+    def add_student(self, student_id, name, grade):
+        # wb = load_workbook(EXCEL_FILE)
+        # ws = wb["Students"]
+        # ws.append([student_id, name, grade])
+        # wb.save(EXCEL_FILE)
+        # print("Student added to Excel.")
+
+        self.students.append(Student(student_id, name, grade))
+        print("✅ Student added.")
+
+    def view_students(self):
+        wb = load_workbook(EXCEL_FILE)
+        ws = wb["Students"]
+        rows = list(ws.iter_rows(values_only=True))[1:]  # skip header
+        if not rows:
+            print("No students to display.")
+        else:
+            table = [[row[0], row[1], row[2]] for row in rows]  # Use rows directly
+            print(tabulate(table, headers=["Student ID", "Name", "Grade"], tablefmt="grid"))
+
+    def delete_student(self, student_id):
+        # wb = load_workbook(EXCEL_FILE)
+        # ws = wb["Students"]
+        # rows = list(ws.iter_rows(values_only=True))
+        # new_rows = [rows[0]]  # keep header
+        # found = False
+        # for row in rows[1:]:
+        #     if str(row[0]) != student_id:
+        #         new_rows.append(row)
+        #     else:
+        #         found = True
+
+        # if found:
+        #     ws.delete_rows(2, ws.max_row)  # clear all data
+        #     for row in new_rows[1:]:
+        #         ws.append(row)
+        #     wb.save(EXCEL_FILE)
+        #     print("Student removed from Excel.")
+        # else:
+        #     print("Student not found.")
+
+        found = False
+        self.students = [s for s in self.students if s.student_id != student_id]
+        if found:
+            print("Student removed.")
+        else:
+            print("Student not found.")
+
+    def update_student(self, student_id, new_name, new_grade):
+        # wb = load_workbook(EXCEL_FILE)
+        # ws = wb["Students"]
+        # updated = False
+        # for row in ws.iter_rows(min_row=2):
+        #     if str(row[0].value) == student_id:
+        #         row[1].value = new_name
+        #         row[2].value = new_grade
+        #         updated = True
+        #         break
+
+        # if updated:
+        #     wb.save(EXCEL_FILE)
+        #     print("Student updated in Excel.")
+        # else:
+        #     print("Student not found.")
+
+        for student in self.students:
+            if student.student_id == student_id:
+                student.name = new_name
+                student.grade = new_grade
+                print("✅ Student updated.")
+                return
+        print("Student not found.")
+
+def main():
+    manager = StudentManager()
+
+    while True:
+        # print("\n🎓 Student Management System with Excel")
+        print("\n1. Add Student")
+        print("2. View Students")
+        print("3. Delete Student")
+        print("4. Update Student")
+        print("5. Exit")
+
+        choice = input("Enter your choice: ")
+
+        if choice == '1':
+            sid = input("Enter student ID: ")
+            name = input("Enter name: ")
+            grade = input("Enter grade: ")
+            manager.add_student(sid, name, grade)
+        elif choice == '2':
+            manager.view_students()
+        elif choice == '3':
+            sid = input("Enter student ID to delete: ")
+            manager.delete_student(sid)
+        elif choice == '4':
+            sid = input("Enter student ID to update: ")
+            name = input("Enter new name: ")
+            grade = input("Enter new grade: ")
+            manager.update_student(sid, name, grade)
+        elif choice == '5':
+            print("Exiting...")
+            break
+        else:
+            print("Invalid choice!")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file