Python | Pandas Series.sort_values()

Pandas series is a One-dimensional ndarray with axis labels. The labels need not be unique but must be a hashable type. The object supports both integer- and label-based indexing and provides a host of methods for performing operations involving the index. Pandas Series.sort_values() function is used to sort the given series object in ascending or descending order by some criterion. The function also provides the flexibility of choosing the sorting algorithm.

Syntax: Series.sort_values(axis=0, ascending=True, inplace=False, kind='quicksort', na_position='last') Parameter : axis : Axis to direct sorting. ascending : If True, sort values in ascending order, otherwise descending. inplace : If True, perform operation in-place. kind : Choice of sorting algorithm. na_position : Argument ‘first’ puts NaNs at the beginning, ‘last’ puts NaNs at the end. Returns : Series

Example #1: Use Series.sort_values() function to sort the elements of the given series object in lexicographical order. Python3

# importing pandas as pd
import pandas as pd

# Creating the Series
sr = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio', 'Moscow'])

# Create the Datetime Index
didx = pd.DatetimeIndex(start ='2014-08-01 10:00', freq ='W', 
                     periods = 6, tz = 'Europe/Berlin') 

# set the index
sr.index = didx

# Print the series
print(sr)

Output : Now we will use Series.sort_values() function to sort the elements of the given series object in ascending order. Python3 1==

# sort the values in ascending order
sr.sort_values()

Output : As we can see in the output, the Series.sort_values() function has successfully sorted the elements of the given series object in ascending order.   Example #2: Use Series.sort_values() function to sort the elements of the given series object in descending order. Python3

# importing pandas as pd
import pandas as pd

# Creating the Series
sr = pd.Series([19.5, 16.8, 22.78, 20.124, 18.1002])

# Print the series
print(sr)

Output : Now we will use Series.sort_values() function to sort the elements of the given series object in descending order. Python3 1==

# sort the values in descending order
sr.sort_values(ascending = False)

Output : As we can see in the output, the Series.sort_values() function has successfully sorted the elements of the given series object in descending order.