DOC: Fix flake8 issues in doc/source/whatsnew/v0.14.*.rst

[saurav2608]

xref: #24177

We didn't start validating the format of PEP8 and other code standards in the documentation examples until recently. We still have some files with errors, that we need to skip, and that we should fix, so we can start validating them.

Two steps are required to replicate the issue

1. Edit setup.cfg in the pandas home, and in the flake8-rst section, remove from the exclude list the file doc/source/whatsnew/v0.14.0.rst & doc/source/whatsnew/v0.14.1.rst

2. Remove the import block ( from pandas import *) from the lines (8-11) of the file v0.14.*.rst.

After that, running the next command will report the errors in the file (note that syntax error usually prevent to validate other errors, and the list of errors to fix can become much longer when the syntax error is fixed (please make sure that you are using flake8-rst version 0.7.0 or higher):

$ flake8-rst doc/source/whatsnew/v0.14.*
doc/source/whatsnew/v0.14.0.rst:62:39: E231 missing whitespace after ','
doc/source/whatsnew/v0.14.0.rst:62:42: E231 missing whitespace after ','
doc/source/whatsnew/v0.14.0.rst:64:16: E231 missing whitespace after ','
doc/source/whatsnew/v0.14.0.rst:65:16: E231 missing whitespace after ','
doc/source/whatsnew/v0.14.0.rst:72:17: E231 missing whitespace after ','
doc/source/whatsnew/v0.14.0.rst:72:19: E231 missing whitespace after ','
doc/source/whatsnew/v0.14.0.rst:73:36: E999 SyntaxError: invalid syntax
doc/source/whatsnew/v0.14.0.rst:73:45: E226 missing whitespace around arithmetic operator
doc/source/whatsnew/v0.14.0.rst:73:48: E226 missing whitespace around arithmetic operator
...
doc/source/whatsnew/v0.14.1.rst:103:16: F821 undefined name 'Timestamp'
doc/source/whatsnew/v0.14.1.rst:106:16: F821 undefined name 'Timestamp'
doc/source/whatsnew/v0.14.1.rst:126:12: F821 undefined name 'date_range'

Once all the errors are addressed, please open a pull request with the fixes in the file, and removing the file from setup.cfg. If you need to do something that feels wrong to fix an error, please ask in a comment to this issue. Please avoid other unrelated changes, which can be addressed in a separate pull request.
cc: @datapythonista

[Seuss27]

I am trying to have a go at this and I am a little confused by the SyntaxError on line 73. It loks like it is just a text response in the code
dfl.iloc[[4, 5, 6]]
IndexError: positional indexers are out-of-bounds

I am not entirely sure what to do with this as it isn't actually code that is throwing the error as far as I can tell. To be clear, the line with the SyntaxError according to flake8-rst is the IndexError: line... Any advice?

[datapythonista]

The problem in this case is that in a .. code-block:: python, the code should be like:

>>> print('hello world')
hello world

I don't remember in the case of exceptions if something else more than the line of the error is needed, but you should find it online