ValueError: Sample larger than population or is negative

import random
import string

tempId = ''.join(random.sample(string.digits, 11))
print(tempId)

报错：ValueError: Sample larger than population or is negative

因为11大于string.digits的长度，加大样本长度可解决

tempId = ''.join(random.sample(string.digits*2, 11))
print(tempId)