DOC: Improve the docsting of Series.iteritems #24879

HubertKl · 2019-01-22T22:31:40Z

closes #xxxx
tests added / passed
passes git diff upstream/master -u -- "*.py" | flake8 --diff
whatsnew entry

codecov · 2019-01-22T23:08:23Z

Codecov Report

Merging #24879 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #24879   +/-   ##
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  Coverage   92.39%   92.39%           
=======================================
  Files         166      166           
  Lines       52410    52410           
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  Hits        48422    48422           
  Misses       3988     3988

Flag	Coverage Δ
#multiple	`90.81% <ø> (ø)`	⬆️
#single	`42.88% <ø> (ø)`	⬆️

Impacted Files	Coverage Δ
pandas/core/series.py	`93.68% <ø> (ø)`	⬆️

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codecov · 2019-01-22T23:08:32Z

Codecov Report

Merging #24879 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #24879      +/-   ##
==========================================
- Coverage   91.25%   91.25%   -0.01%     
==========================================
  Files         172      172              
  Lines       52977    52977              
==========================================
- Hits        48343    48342       -1     
- Misses       4634     4635       +1

Flag	Coverage Δ
#multiple	`89.82% <ø> (ø)`	⬆️
#single	`41.74% <ø> (ø)`	⬆️

Impacted Files	Coverage Δ
pandas/core/series.py	`93.68% <ø> (ø)`	⬆️
pandas/util/testing.py	`88.98% <0%> (-0.1%)`	⬇️

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TomAugspurger

Looks nice overall.

I'm not entirely sure about the focus on "creating a new series". I think the thing to focus on is other functions that can only take scalar inputs (are not vectorized). You can do many things with the output of the non-vectorized method (including creating a new series).

TomAugspurger · 2019-01-23T03:44:59Z

pandas/core/series.py

@@ -1446,6 +1446,50 @@ def to_string(self, buf=None, na_rep='NaN', float_format=None, header=True,
    def iteritems(self):
        """
        Lazily iterate over (index, value) tuples.
+
+        This method returns a zip of tuples (index, value). This is useful When


How about "iterable" instead of "zip"?

TomAugspurger · 2019-01-23T03:45:39Z

pandas/core/series.py

@@ -1446,6 +1446,50 @@ def to_string(self, buf=None, na_rep='NaN', float_format=None, header=True,
    def iteritems(self):
        """
        Lazily iterate over (index, value) tuples.
+
+        This method returns a zip of tuples (index, value). This is useful When
+        one want to create new series from the values of an old one. Be aware


"one wants" (but "you want" probably sounds better)

I'm not sure about creating a new series using itertuples. I'd rather say something about lazily iterating over the index, value pairs.

I am not sure to perfectly get what you mean. I tried to add an example where vectorization is not possible (as far as I know maybe I am wrong)

TomAugspurger · 2019-01-23T03:47:25Z

pandas/core/series.py

+
+        Returns
+        -------
+        zip


I wonder if people have thoughts here. I guess zip is technically a type... But I think Iterable is probably better-known.

I agree. I think iterable would be more user-friendly.

TomAugspurger · 2019-01-23T03:47:49Z

pandas/core/series.py

+        Returns
+        -------
+        zip
+            Iterable tuples (index, value) of the Series.


Iterable of tuples containing the (index, value) pairs from a Series.

HubertKl · 2019-01-23T23:52:17Z

Thanks for those comments, I tried to improve the docstring accordingly to your remarks.

…Series_iteritems

mroeschke · 2019-01-27T07:44:40Z

pandas/core/series.py

@@ -1446,6 +1446,30 @@ def to_string(self, buf=None, na_rep='NaN', float_format=None, header=True,
    def iteritems(self):
        """
        Lazily iterate over (index, value) tuples.
+
+        This method returns an iterable tuple (index, value). This is
+        convienient if you want to create a a Lazy iterator.


There are 2 as on this line. Lowercase l on Lazy

mroeschke · 2019-01-27T07:45:54Z

pandas/core/series.py

+
+        See Also
+        --------
+        Series.apply : Invoke function on values of Series.


Not sure if Series.apply and Series.map are too related to this method. I would instead reference Series.items

Unless I am mistaken, it seems to me that Series.iteritems and Series.items are the same method. The docstring of items and iteritems will be the same I don't think that this is a good idea.

I will mention it in the description instead.

I agree that apply and map aren't closely enough related to include here - can you remove?

pep8speaks · 2019-01-31T22:06:37Z

Hello @HubertKl! 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 2019-03-16 10:50:43 UTC

WillAyd

Minor comment otherwise lgtm

WillAyd · 2019-02-28T00:32:49Z

pandas/core/series.py

+
+        See Also
+        --------
+        Series.apply : Invoke function on values of Series.


I agree that apply and map aren't closely enough related to include here - can you remove?

TomAugspurger · 2019-03-05T16:09:08Z

@HubertKl can you update, removing Series.apply and Series.map in the See Also?

jreback · 2019-03-10T23:21:07Z

@HubertKl can you update to comments

…Series_iteritems

HubertKl · 2019-03-16T10:51:43Z

Sorry for the delay. I modified the PR accordingly to the requests.

WillAyd · 2019-03-19T03:48:23Z

Thanks @HubertKl !

* origin/master: DOC: clean bug fix section in whatsnew (pandas-dev#25792) DOC: Fixed PeriodArray api ref (pandas-dev#25526) Move locale code out of tm, into _config (pandas-dev#25757) Unpin pycodestyle (pandas-dev#25789) Add test for rdivmod on EA array (GH23287) (pandas-dev#24047) ENH: Support datetime.timezone objects (pandas-dev#25065) Cython language level 3 (pandas-dev#24538) API: concat on sparse values (pandas-dev#25719) TST: assert_produces_warning works with filterwarnings (pandas-dev#25721) make core.config self-contained (pandas-dev#25613) CLN: replace %s syntax with .format in pandas.io.parsers (pandas-dev#24721) TST: Check pytables<3.5.1 when skipping (pandas-dev#25773) DOC: Fix typo in docstring of DataFrame.memory_usage (pandas-dev#25770) Replace dicts with OrderedDicts in groupby aggregation functions (pandas-dev#25693) TST: Fixturize tests/frame/test_missing.py (pandas-dev#25640) DOC: Improve the docsting of Series.iteritems (pandas-dev#24879) DOC: Fix function name. (pandas-dev#25751) Implementing iso_week_year support for to_datetime (pandas-dev#25541) DOC: clarify corr behaviour when using a callable (pandas-dev#25732) remove unnecessary check_output (pandas-dev#25755) # Conflicts: # doc/source/whatsnew/v0.25.0.rst

DOC: Improve the docsting of Series.iteritems

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…Series_iteritems

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WillAyd added this to the 0.25.0 milestone Mar 19, 2019

WillAyd merged commit 406e7ea into pandas-dev:master Mar 19, 2019

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DOC: Improve the docsting of Series.iteritems #24879

DOC: Improve the docsting of Series.iteritems #24879

HubertKl commented Jan 22, 2019

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DOC: Improve the docsting of Series.iteritems #24879

DOC: Improve the docsting of Series.iteritems #24879

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