You can use them as thousands separators.
This change differs from PEP 515 in that not only does it allow commas in addition to underscores, but it's much more liberal about placement. Any number of underscores or commas can be placed anywhere, even at the start.
Yes, bizarrely, this does require editing the implementation of `defn` a little. Without the import, HyList isn't in scope. Defining `let` made it visible due to black magic regarding automatic import.
* Docs: Hy <-> Python interop fix#1061
I separated the existing text in two sections, with some additional
explanations and a link to Hy's `import`.
* added interop page
* simplified interop section in tutorial
* remove the TODO from interop section in tutorial
Because yay
* Corrections from @Kodiologist
I kept the part about mangling, but added a warning about its incompleteness. I
think it can be useful for somebody who just wants to use a Python module in his
code. Maybe it can be removed when the actual documentation for mangling is
written.
* Added myself to AUTHORS.
I'll do my best to be worthy of it. Thanks for this awesome project!
Unlike Python, Hy allows the programmer to intermingle positional and keyword arguments. This change removes an exception to that rule for method calls, in which the method callee always had to be the first thing after the method. Thus, `(.split :sep "o" "foo")` now compiles to `"foo".split(sep="o")` instead of `HyKeyword("sep").split("o", "foo")`.
It's not tested, and sure enough, a glance at the code suggests that `case` and `switch` will evaluate their first argument once for every clause, which is unlikely to be desirable. I say remove it, but if anybody wants to fix and test and re-add `case` (and change it to a square-bracket syntax like `cond`), be my guest.
I don't see why you'd put this in the standard library. I guess it could be useful for when you're maintaining a library and you want to change the name of a function or macro but keep the old name around for a while so people's code doesn't break immediately. But that's a pretty limited purpose.
