On Wed, Sep 11, 2019 at 09:34:07AM -0400, Daniel Holth wrote:
> I didn't realize you could override __builtins__.str. That's interesting.
Don't touch __builtins__ that's a CPython implementation detail. The
public API is to ``import builtins`` and use that.
This override technique is called monkey-patching, it's permitted but
considered a fairly dubious thing to do in production code, since it
risks breaking other libraries or even parts of your own code which
relies on str(b'') working.
It may be better to isolate the monkey-patch to the module (hopefully
there is only one!) that needs it, by a simple global that shadows the
built-in:
import builtins
def str(obj):
assert not isinstance(obj, bytes)
return builtins.str(obj)
instead of putting it into builtins itself.
--
Steven
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