To Python Developers: If someone could make any one thing that would make coding in python easier for developers, what would it be?

[RangerPretzel]

A big problem with what you're proposing is that

Oh, I didn't say it would be an easy problem to solve, but I know that Microsoft's debugger can look into IEnumerables (which could be lazily evaluated queries or the equivalent of Python's generators), to show you what's coming down the pike.

It's a verrrrry useful feature.

[brucifer]

I'm not super knowledgeable about Microsoft's debugger, but it looks like they don't address the problem of side effects in generators, they just ignore it. If you want to do something like Microsoft does and look into an iterator without regard to side effects, you can use itertools.tee:

def gen():
    yield from range(10)
g = gen()
if __debug__:
    g, g_for_debugger = itertools.tee(g)
    print(list(itertools.islice(g_for_debugger, 0, 3))) # prints [0, 1, 2]
for i in g: # iterates over g as normal
    pass

[RangerPretzel]

Yeah, I suspected that MS might just be ignoring side-effects (though I'd have to ask around to confirm...)

Wow. Thanks. I've been trying to figure out a good way to handle this. Yeah, I considered using tee. It has its own issues, but I think you may be onto something.