作为 Apple Store App 独立开发者，你要搞限时促销，为你的应用生成激活码（或者优惠券），使用 Python 如何生成 200 个激活码（或者优惠券）？
这里的激活码我简单认为是英文字母和阿拉伯数字的组合， 且各部分占比尽量相等。
import random
def add_list(list_, sublist):
list_.extend(sublist)
def get_code():
try:
length = int(input('please enter the length of your code:\n'))
nums = [str(n) for n in range(10)]
upper_words = [chr(u) for u in range(65, 91)]
lower_words = [chr(l) for l in range(97, 123)]
init_code = nums + upper_words + lower_words
if length >= 3:
activate_code = []
size = length // 3
add_list(activate_code, random.sample(nums, size))
add_list(activate_code, random.sample(upper_words, size))
add_list(activate_code, random.sample(lower_words, size))
if len(activate_code) < length:
activate_code.extend(random.sample(init_code, length - len(activate_code)))
random.shuffle(activate_code)
final_code = ''.join(activate_code)
return final_code
else:
print('please enter an integer greater than 3!')
except ValueError:
print('your input is not integer!')
