字符串下標(biāo)讀取
name = 'fty'
print(name[0])
>>> f
倒序讀取
name = 'fty'
print(name[-1])
>>> y
print(name[-2])
>>> t
字符串下標(biāo)如果為負(fù)數(shù),即表示從右開(kāi)始讀取
name = 'fty'
print(name[0])
>>> f
name = 'fty'
print(name[-1])
>>> y
print(name[-2])
>>> t
字符串下標(biāo)如果為負(fù)數(shù),即表示從右開(kāi)始讀取