python基础--string

string = ‘kzx TruthK‘

string.capitalize()  # 首字母大写
string.casefold()   # 大写全部变小写
string.center(50, "-")  # 输出 ‘---------------------kzx TruthK----------------------‘
string.count(‘lex‘)  # 统计 lex出现次数
string.encode()  # 将字符串编码成bytes格式
string.endswith("Li")  # 判断字符串是否以 Li结尾
"kzx\tTruthK".expandtabs(10)  # 输出‘Alex      Li‘， 将\t转换成多长的空格
string.find(‘r‘)  # 查找A,找到返回其索引， 找不到返回-1

‘9‘.isdigit()  # 是否整数
string.isnumeric()
string.isprintable()
string.isspace()
string.istitle()
string.isupper()
"|".join([‘kzx‘, ‘truth‘, ‘ke‘])  # 结果 ‘kzx|truth|ke‘

msg = "my name is {}, and age is {}"
print(msg.format("kzx", ‘xx‘))
结果:my name is kzx, and age is xx

mg = "my name is {name}, and age is {age}"
print(mg.format(name=‘TruthK‘, age="xx"))
结果:my name is TruthK, and age is xx

mg.index(‘n‘)  # 返回r所在字符串的索引

mg.partition(‘is‘)  # 以‘is‘分割mg  结果(‘my name ‘, ‘is‘, ‘ {name}, and age is {age}‘)