Why calling .sort() function on Pandas Series sorts its values in-place and returns nothing? [duplicate]

Answer 1

Both .sort() and order() functions are DEPRECATED

.sort_values() function is the replacement and here's the example on how to use it.

Example:

import numpy as np
import pandas as pd

arr = np.array([1,3,4,2])
series = pd.Series(arr)

Ascending Order
Equivalent to .order() function from old versions.

ascending = series.sort_values() 

Descending Order
Equivalent to .order(ascending=False)

descending = series.sort_values(ascending=False)

In Place
Equivalent to .sort() from old versions.

series.sort_values(inplace=True) 

For more info, check official documentation here