diff --git a/assignment.py b/assignment.py
index 16c49a3..2656ec4 100644
--- a/assignment.py
+++ b/assignment.py
@@ -6,6 +6,7 @@ def add_student(students):
     students[roll] = (name, age, subject)
     print("Student added successfully!")
 
+
 def update_student(students):
     roll = int(input("Enter roll number of the student to update: "))
     if roll in students:
@@ -17,6 +18,7 @@ def update_student(students):
     else:
         print("Student not found!")
 
+
 def delete_student(students):
     roll = int(input("Enter roll number of the student to delete: "))
     if roll in students:
@@ -25,18 +27,25 @@ def delete_student(students):
     else:
         print("Student not found!")
 
+
 def search_student(students):
     roll = int(input("Enter roll number of the student to search: "))
     if roll in students:
         print("Student found!")
-        print(f"Name: {students[roll][0]}, Age: {students[roll][1]}, Subject: {students[roll][2]}")
+        print(
+            f"Name: {students[roll][0]}, Age: {students[roll][1]}, Subject: {students[roll][2]}"
+        )
     else:
         print("Student not found!")
 
+
 def print_students(students):
     print("List of students:")
     for roll in students:
-        print(f"Roll number: {roll}, Name: {students[roll][0]}, Age: {students[roll][1]}, Subject: {students[roll][2]}")
+        print(
+            f"Roll number: {roll}, Name: {students[roll][0]}, Age: {students[roll][1]}, Subject: {students[roll][2]}"
+        )
+
 
 if __name__ == "__main__":
     students = {}
@@ -61,4 +70,4 @@ def print_students(students):
         elif option == 6:
             break
         else:
-            print("Invalid option!")
\ No newline at end of file
+            print("Invalid option!")