DOC: Imprecision in the type description of `pd.concat` parameter

[kodimatrix]

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/reference/api/pandas.concat.html

Documentation problem

The pd.concat() function has a parameter obj with the typing hint:: Iterable (and other). It is possible to call this function with a generator, for example. However, the documentation refers to it as "a sequence...". According to the glossary (and collections.abs module, respectively), this is a small imprecision.

https://docs.python.org/3/glossary.html#term-iterable
https://docs.python.org/3/glossary.html#term-sequence

Suggested fix for documentation

Replace "sequence" with "iterable".

[rhshadrach]

We convert any non-mapping argument to a list

pandas/pandas/core/reshape/concat.py

Line 502 in 78c79b9

objs = list(objs)

I'd be okay with refining the documentation here but want to make sure we're okay explicitly supporting generators. cc @mroeschke @phofl

[mroeschke]

Yeah generally any constructor should accept generators.

[kodimatrix]

take