遍历出字母A-Z(a-z)的四种方式

# 四种方式打印出A-Z(a-z)
import string

l1 = [chr(i) for i in range(ord("A"), ord("Z") + 1)]
l2 = list(map(chr, range(ord('a'), ord('z') + 1)))
l3 = string.ascii_uppercase
l4 = [chr(i).upper() for i in range(97, 122)]
print(tuple(l1))
print(tuple(l2))
print(tuple(l3))
print(tuple(l4))