Fixed describe.py

[Abhibhav2003]

Issue-60550-Fixed

Removed the condition that included 50th percentile. i.e.

if 0.5 not in percentiles :
percentiles.append(0.5)

Added the condition, that 50th percentile should only be appended if the list 'percentiles' is empty.

[rhshadrach]

Thanks for the PR! When changing the behavior of pandas, please always add tests.

[rhshadrach]

As mentioned in the linked issue, I think pandas should not be adding in 0.5 when the user specifies percentiles=[].

[Abhibhav2003]

As mentioned in the linked issue, I think pandas should not be adding in 0.5 when the user specifies percentiles=[].

I have removed the automatic addition of 0.5 when percentiles=[], as per the feedback.

Should percentiles=[] return an empty result, or should it raise an error?

[rhshadrach]

percentiles=[] should produce a result without any percentiles in it. But the result itself will not be empty.

[Abhibhav2003]

Done!
Added Tests as well!

import numpy as np

import pandas as pd

frame = pd.DataFrame(np.array([1, 2, 3, 4, 5, 100]))

print(frame.describe(percentiles=[]))

Here's the required Output :

print(frame.describe(percentiles=[0.25]))

Output :