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Closed
wants to merge 9 commits into from
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CLN: groupby #29626

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jbrockmendel
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splitting this off of branches that do non-CLN stuff

@pep8speaks
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pep8speaks commented Nov 15, 2019

Hello @jbrockmendel! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2019-11-17 15:40:56 UTC

def _aggregate_named(self, func, *args, **kwargs):
result = OrderedDict()
def _aggregate_named(self, func, *args, **kwargs) -> OrderedDict:
result = OrderedDict() # type: OrderedDict
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can just be a dict now

@jreback jreback added Clean Groupby Typing type annotations, mypy/pyright type checking labels Nov 16, 2019
@jreback jreback added this to the 1.0 milestone Nov 16, 2019
@@ -377,8 +383,8 @@ def _get_index() -> Index:
result = Series(data=values, index=_get_index(), name=self._selection_name)
return self._reindex_output(result)

def _aggregate_named(self, func, *args, **kwargs):
result = OrderedDict()
def _aggregate_named(self, func, *args, **kwargs) -> dict:
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Can you use typing.Dict instead of the built-in? Would also be great if you can identify key / value types if not too much incremental effort

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Will do. In cases where we can do Dict[foo, bar] i get why that's better. In cases where we can't say anything meaningful, is it just for consistency or is there some other upside?

def _aggregate_named(self, func, *args, **kwargs):
result = OrderedDict()
def _aggregate_named(self, func, *args, **kwargs) -> Dict:
result = {} # type: Dict
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can use the new style of typing now, e.g. result: Dict = {}, though odd that mypy can't infer that. better to be even specific, Dict[str, ]

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Just FYI mypy will always complain for an empty container creation as it can't infer the subtypes

@@ -443,18 +449,16 @@ def transform(self, func, *args, **kwargs):
result.index = self._selected_obj.index
return result

def _transform_fast(self, func, func_nm) -> Series:
def _transform_fast(self, func: Callable, func_nm: str) -> Series:
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If the arguments and/or return type of Callable can be provided it is very helpful; not sure how much incremental effort that is

def _aggregate_named(self, func, *args, **kwargs):
result = OrderedDict()
def _aggregate_named(self, func, *args, **kwargs) -> Dict:
result = {} # type: Dict
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Just FYI mypy will always complain for an empty container creation as it can't infer the subtypes

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Note that there are a few conflicts between this and #29124

@@ -1579,7 +1591,7 @@ def _insert_inaxis_grouper_inplace(self, result):
if in_axis:
result.insert(0, name, lev)

def _wrap_aggregated_output(self, output, names=None):
def _wrap_aggregated_output(self, output: dict, names=None):
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dict -> typing.Dict and ideally with subtypes if possible (here and below)

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Closing in favor of #29124

@jbrockmendel jbrockmendel deleted the cln-gb branch November 18, 2019 01:57
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5 participants