QST: Only the first 100 columns are suggested in tab completion

[TheDerivator]

The [:100] in the following code implies that tab completion which relies on dir( ) will only consider the first 100 columns.

• Is there a reason for the magic number? Why not remove it?
• Alternatively, make it optional with something like pd.set_option('display.max_dir_items', None)?

Which is better?

pandas/pandas/core/indexes/base.py

Line 760 in 88df92f

for c in self.unique(level=0)[:100]

[mzeitlin11]

Thanks for the report @TheDerivator! This issue has come up a few times (the reason for the magic number is performance-related). I agree that something like an option might make more sense - if you have interest in improving this, let's move the discussion to #37996, since it contains a few of the issues and comments that provide some more context