适用于可迭代对象的通用函数

join

s = 'mumu'
s1 = '_'.join(s)  # m_u_m_u

li = ['mumu', '怪蜀黍', '好看']
s = '+++'.join(li)  # mumu+++怪蜀黍+++好看

可以利用join去掉列表输出时的引号，方法如下：

li = ['a', 'b', 'c']
pirnt(li)  # ['a', 'b', 'c']

s = ', '.join(li)  # a, b, c
print('[' + s + ']')  # [a, b, c]

split

s = 'm+u+m+u'
li = s.split('+')  # ['m', 'u', 'm', 'u']

join: list ----> str

split: str ----> list

转载于:https://www.cnblogs.com/MuMuyom/p/10628467.html