Pandas DataFrame: Select the rows, the score is between 15 and 20 (inclusive)

Pandas: DataFrame Exercise-10 with Solution

Write a Pandas program to select the rows the score is between 15 and 20 (inclusive).

Sample DataFrame:
Sample Python dictionary data and list labels:
exam_data = {'name': ['Anastasia', 'Dima', 'Katherine', 'James', 'Emily', 'Michael', 'Matthew', 'Laura', 'Kevin', 'Jonas'],
'score': [12.5, 9, 16.5, np.nan, 9, 20, 14.5, np.nan, 8, 19],
'attempts': [1, 3, 2, 3, 2, 3, 1, 1, 2, 1],
'qualify': ['yes', 'no', 'yes', 'no', 'no', 'yes', 'yes', 'no', 'no', 'yes']}
labels = ['a', 'b', 'c', 'd', 'e', 'f', 'g', labels = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j']

Sample Solution :

Python Code :

import pandas as pd
import numpy as np
exam_data  = {'name': ['Anastasia', 'Dima', 'Katherine', 'James', 'Emily', 'Michael', 'Matthew', 'Laura', 'Kevin', 'Jonas'],
        'score': [12.5, 9, 16.5, np.nan, 9, 20, 14.5, np.nan, 8, 19],
        'attempts': [1, 3, 2, 3, 2, 3, 1, 1, 2, 1],
        'qualify': ['yes', 'no', 'yes', 'no', 'no', 'yes', 'yes', 'no', 'no', 'yes']}
labels = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j']

df = pd.DataFrame(exam_data , index=labels)
print("Rows where score between 15 and 20 (inclusive):")
print(df[df['score'].between(15, 20)])

Sample Output:

Rows where score between 15 and 20 (inclusive):                        
   attempts       name qualify  score                                  
c         2  Katherine     yes   16.5                                  
f         3    Michael     yes   20.0                                  
j         1      Jonas     yes   19.0                                

Explanation:

The above Pandas code first creates a dataframe ‘df’ from the dictionary ‘exam_data’ using the list labels as index. It then filters the rows of ‘df’ that have a 'score' value between 15 and 20 (inclusive) using the between() method of a Pandas series.

Finally print() function prints the resulting filtered dataframe.

Python-Pandas Code Editor:

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