[ENH] xlsx_cells (pyjanitor-devs#1046)

* add check argument to subprocess.run in readcommandline, and capture CalledProcessError in tests

* updates to error reporting for read_commandline; more explicit

* default values

* default values

* Add files via upload

* more tests

* minor edits to read_csvs

* minor edits to read_csvs

* minor edits to read_csvs

* edit to test_xlsx_table

* edit to test_xlsx_table

* sheetnames typing change

* modify docs, add better logic, and tests

* Add recursive function to extract cell properties

* Add tests

* Docs cleanup

* tests cleanup

* doctests added, xlsx_table cleaned up

* Update io.py

* Update test_xlsx_table.py

* add changelog

* fix docs

* make object_to_dict private

* fix docs

* updates based on code review

* updates based on code review

* updates based on code review

* docs fix

* some cleanup

* clean up notebook

* Add inspiration to docs

Co-authored-by: samukweku <[email protected]>
Co-authored-by: Eric Ma <[email protected]>

Author: 3 people

.gitignore

@@ -142,3 +142,4 @@ tags
 # Other stuff
 *.profraw
 /scratch.py
+midpoint.csv

CHANGELOG.md

@@ -20,6 +20,7 @@
 -   [BUG] Fix SettingWithCopyWarning and other minor bugs when using `truncate_datetime_dataframe`, along with further performance improvements (PR #1040). @thatlittleboy
 -   [ENH] Performance improvement for `conditional_join`. @samukweku
 -   [ENH] Multiple `.value` is now supported in `pivot_longer`. #1034 @samukweku
+-   [ENH] Add `xlsx_cell` for reading a spreadsheet as a table of individual cells. #929 @samukweku.
 -   [EHN] Let `filter_string` suit parameters of `Series.str.contains` Issue #1003 and #1047. @Zeroto521
 
 ## [v0.22.0] - 2021-11-21