字典的添加与遍历

s = {}
for num in range(97,123):
    # 97到122分别为a到z的ASCII编码，che()用于转化为字母
    zimu = chr(num)
    s[num] = zimu
print(s)

    # 遍历字典需dict后加.items
for k,v in s.items():
    print(k,">>>",v)