AssertionError: Equality check failure.

[gchilczuk]

Here is my code:

import random

import perfplot

def _any(funcs):
    return any(f() for f in funcs)

def _for(funcs):
    for f in funcs:
        if f(): 
            return True
    return False

perfplot.show(
    setup=lambda k: [lambda *args, **kwargs: random.choice((True, False)) for _ in range(k)],
    kernels=[_any, _for],
    labels=['any', 'for'],
    n_range=[2**k for k in range(15)],
    xlabel='len(a)'
    )

I'm not modifying the code, just trying to run it multiple times.
It's working… sometimes. And sometimes it throws an error:

AssertionError: Equality check failure. (any, any)

another time it throws:

AssertionError: Equality check failure. (any, for)

Sometimes it fails instantly and sometimes after a few visible actions (loading bar).
And, as I said, sometimes it works perfectly as I expect.

I've tested it on Python3.6.5 and Python3.7.0 and behaviour were the same.

is it something wrong with my code or is it some kind of bug?

[nschloe]

is it something wrong with my code

Yes. If you run your function _any twice with the same input data (which are functions), the results vary because of your use of random. perfplot recognizes this as a bug and throws and error. If this behavior is fine for you, you can specify equality_check=None.

[gchilczuk]

Such a tiny bug, your advice helped me a lot, thank you!

[gosuto-inzasheru]

Good to know about equality_check=None!