[BUG] No repr for pandas.Timestamp in JupyterLab when using rich.pretty

[dlukes]

Describe the bug

In JupyterLab, after globally enabling rich reprs, no repr is shown for pandas.Timestamp objects. In both IPython and the default Python REPL, this problem does not occur.

To Reproduce

Start JupyterLab:

$ jupyter lab

Create a new notebook and enable rich reprs -- either like this:

%load_ext rich

Or like this:

from rich import pretty
pretty.install()

Then enter the following code into the next cell and evaluate it:

import pandas
pandas.Timestamp("2021-06-18T16:55:00")

No repr is shown. If the same code is run in a terminal REPL (both ipython and python), a repr is shown, as expected.

Platform

Linux (Solus)

Diagnose

$ pip freeze | grep -P '(rich|jupyterlab)='
jupyterlab==3.0.16
rich==10.4.0

[willmcgugan]

Found the problem. There will be a fix in the next release.

[willmcgugan]

Can you give 10.5.0 a try and let me know if that fixes it?

[dlukes]

It does indeed, thank you very much!

[saiwing-yeung]

@willmcgugan I noticed an issue that might be related.

df = pd.DataFrame({'datadate': ['2021-01-01']})
df['datadate']  # doesn't print anything

This works if I don't pretty.install().