Creating a generator is easy in Python. You can create a generator just by defining a function with a yield statement instead of a return statement. If a function contains at least one yield statement, it becomes a generator function. yield and return statements will return some value from a function. Here is an example:

def my_gen():
    n = 1
    print('This is printed first')
    yield n
    n += 1
    print('This is printed second')
    yield n
    n += 1
    print('This is printed at last')
    yield n
    for item in my_gen():
        print(item)

Output:
This is printed first
1
This is printed second
2
This is printed at last
3