Python workbook, a small program every day, question 0001

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requirement

As Apple Store App Indie developer , You're going to have a limited time promotion , For your application Generate activation code （ Or coupons ）, Use Python How to generate 200 Activation codes （ Or coupons ）？

Code

import random
import string
str=string.ascii_uppercase+string.digits
def getKey(length):
key=''
for i in range(0,int(length)):
key+=random.choice(str)
return key
def main():
length=input('please input length of key')
number=input('please input number of key')
keys=[]
for i in range(0,int(number)):
key=getKey(length)
if not key in keys:
keys.append(key)
else:
i-=1
path='temp/keys.txt'
with open(path,'w') as file:
for item in keys:
file.write(item+'\n')
main()

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