PyScript glitches

[almarklein]

This is an issue to collect "glitches" in PyScript, because it's so easy to forget about them. We'll have to see whether to fix or document each one individually.

• if x, with x an object can resolve to False if that object has a length property.
• IIRC x = x or 0 does not work, since truthy() returns False on a non-truthy and the original object otherwise.
• elif this_is_js(): produces syntactically invalid JS.
• using range() brings in the pyfunc_range() even if used in for-loop.
• assert x does not use truthy()
• List comprehensions do not work with float arrays PyScript list comprehensions don't work for Float64Array #396

[Winand]

(as of v0.4.1) pyscript allows def catch(): and this = ... and produces invalid js

[Winand]

class Translator():
    langs, q = {}, None

produces invalid js source (variables are defined globally):

stub2_ = [{}, null];
langs = stub2_[0];q = stub2_[1];

[almarklein]

Issue moved to flexxui/pscript #7 via ZenHub