List with Random Numbers

[AnjyilLee]

For my homework, I need to make a lottery number generator, a program that generates a 7 digit lottery number, each digit generated on their own and between 0-9, then puts them in a list. By looking through my textbook and assignments done in class, I was able to piece this together:

def main():
    lottery_list = []
    import random
    random.seed(10)
    random1 = random.randint(0, 9)
    lottery_list.append(random1)
    random2 = random.randint(0, 9)
    lottery_list.append(random2)
    random3 = random.randint(0, 9)
    lottery_list.append(random3)
    random4 = random.randint(0, 9)
    lottery_list.append(random4)
    random5 = random.randint(0, 9)
    lottery_list.append(random5)
    random6 = random.randint(0, 9)
    lottery_list.append(random6)
    random7 = random.randint(0, 9)
    lottery_list.append(random7)

main()


print lottery_list

but I keep getting this error:

Error:
Traceback (most recent call last):
  File "C:/Users/Sami3_000/Documents/School/Intro to Program Logic and Design/Ch7Ex2.py", line 28, in <module>
    print lottery_list
NameError: name 'lottery_list' is not defined

Why does it think I haven't defined it? And how can I improve my program?