Pandas Practice Set-1: Count the number of unique values in cut series of diamonds DataFrame

Last update on May 03 2025 13:08:40 (UTC/GMT +8 hours)

34. Count Number of Unique Values in 'cut' Series

Write a Pandas program to count the number of unique values in cut series of diamonds DataFrame.

Sample Solution:

Python Code:

import pandas as pd
diamonds = pd.read_csv('https://raw.githubusercontent.com/mwaskom/seaborn-data/master/diamonds.csv')
print("Original Dataframe:")
print(diamonds.head())
print("\nNumber of unique values in cut series of diamonds DataFrame:")
print(diamonds.cut.nunique())

Sample Output:

Original Dataframe:
   carat      cut color clarity  depth  table  price     x     y     z
0   0.23    Ideal     E     SI2   61.5   55.0    326  3.95  3.98  2.43
1   0.21  Premium     E     SI1   59.8   61.0    326  3.89  3.84  2.31
2   0.23     Good     E     VS1   56.9   65.0    327  4.05  4.07  2.31
3   0.29  Premium     I     VS2   62.4   58.0    334  4.20  4.23  2.63
4   0.31     Good     J     SI2   63.3   58.0    335  4.34  4.35  2.75

Number of unique values in cut series of diamonds DataFrame:
5

For more Practice: Solve these Related Problems:

Write a Pandas program to count the number of unique values in the 'cut' series using nunique().
Write a Pandas program to compute and print the total count of distinct diamond cuts in the DataFrame.
Write a Pandas program to use value_counts() and then determine the number of unique 'cut' values.
Write a Pandas program to display the unique count of the 'cut' column and compare it with the length of unique().

Go to:

Previous: Write a Pandas program to display the unique values in cut series of diamonds DataFrame.
Next: Write a Pandas program to compute a cross-tabulation of two Series in diamonds DataFrame.

Python Code Editor:

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