Functions in Python

Functions A functions is a block organized and re-usable code and use to perform certain action.Pyhthon comes with lot of built in functions such as print("hello world") str(3) == "3" int("5") == 15 username = input("Enter the user's name: ") So now let's create our own functions.So for this you can use PyCharm editor I will provide the code here and you can run it directly using pycharm. functions.py : students = [] def get_students_titlecase(): student_titlecase = [] for student in students: students_titlecase = student.title() return students_titlecase def print_students_titlecase(): students_titlecase = [] for student in students: students_titlecase=student.title() print(students_titlecase) def add_student(name) : students.append(name) student_list = get_students_titlecase() add_student("Abhinaw") So actually I have by knowingly added some repeated code in functions which can be removed.Lets see def print_students_titlecase(): students_titlecase = get_students_titlecase() print(students_titlecase) So if you write functions for single responsibility then it will be very helpful to write Unit Testing cases and code will be organized too.