Python中join和split用法实例

其join和split的英文版解释如下：

join(...)
S.join(sequence) -> string

Return a string which is the concatenation of the strings in the
sequence. The separator between elements is S.

split(...)
S.split([sep [,maxsplit]]) -> list of strings

Return a list of the words in the string S, using sep as the
delimiter string. If maxsplit is given, at most maxsplit
splits are done. If sep is not specified or is None, any
whitespace string is a separator and empty strings are removed
from the result.