How to display most frequent value in a Pandas series?

Last Updated : 18 Aug, 2020

In this article, our basic task is to print the most frequent value in a series. We can find the number of occurrences of elements using the value_counts() method. From that the most frequent element can be accessed by using the mode() method. Example 1 :

Python3

# importing the module
import pandas as pd
 
# creating the series
series = pd.Series(['g', 'e', 'e', 'k', 's', 
                    'f', 'o', 'r', 
                    'g', 'e', 'e', 'k', 's'])
print("Printing the Original Series:")
display(series)

# counting the frequency of each element
freq = series.value_counts()
print("Printing the frequency")
display(freq)

# printing the most frequent element
print("Printing the most frequent element of series")
display(series.mode());

Output :

Example 2 : Replacing the every element except the most frequent element with None.

Python3

# importing the module
import pandas as pd
 
# creating the series
series = pd.Series(['g', 'e', 'e', 'k', 's', 
                    'f', 'o', 'r', 
                    'g', 'e', 'e', 'k', 's'])

# counting the frequency of each element
freq = series.value_counts()

# replacing everything else as Other
series[~series.isin(freq .index[:1])] = None
print(series)