QUERY · ISSUE

function doesn't take keyword arguments in micropython

openby SamRoy259opened 2022-03-14updated 2023-04-30

py-core

i=10
i.to_bytes(1,byteorder='little') * 4

CANDIDATE · ISSUE

unix: "function does not take keyword arguments" message can mislead

closedby peterhinchopened 2016-04-18updated 2017-03-22

If function kw arguments are supplied from a dict, and the dict (erroneously) contains unexpected arguments, the above error message is rather misleading.

d = {'argument' : 'A', 'bar' : 0}

def foo(*, bar=False):
    print('foo')
foo(**d)

Cpython produces the self-evident

>>> foo(**d)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: foo() got an unexpected keyword argument 'argument'
>>>

Assessment

Q Qwen · high

Issue #8414 reports that the specific method int.to_bytes() doesn't accept keyword arguments (like byteorder='little'). Issue #1992 is about a misleading error message when passing unexpected keyword arguments to a function via dict unpacking. These are fundamentally different problems: #8414 is about a missing feature (keyword argument support in a specific built-in method), while #1992 is about improving error message clarity for a different scenario. The error signature 'function does not take keyword arguments' appears in #1992's description as the misleading message, but #8414 is about the actual inability to use keyword arguments with to_bytes(), not about the error message itself.

Suggested action

Close as off-topic. The candidate issue does not address the feature request in the query. The query should be tracked separately as a feature implementation for `int.to_bytes()` to support keyword arguments.

function doesn't take keyword arguments in micropython

unix: "function does not take keyword arguments" message can mislead

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