[Python-ideas] Add list.join() please
Terry Reedy
tjreedy at udel.edu
Tue Jan 29 18:30:46 EST 2019
On 1/28/2019 8:40 PM, Jamesie Pic wrote:
> 0. os.path.join takes *args
Since at least 1 path is required, the signature is join(path, *paths).
I presume that this is the Python version of the Unix version of the
system call that it wraps.. The hidden argument is os.sep. It is
equivalent to os.sep.join((path,)+paths) (though one would not write it
this way).
> 1. str.join takes a list argument,
This premise behind the (repeated) request is a false. str.joins
arguments are a string (the joiner) and an *iterable of strings*, which
is an abstract subclass of the abstract concept 'iterable'. And only a
small fraction of lists are lists of strings and therefore iterables of
strings.
--
Terry Jan Reedy
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