Pandas Practice Set-1: Set an existing column as the index of diamonds DataFrame and restore the index name, and move the index back to a column
Write a Pandas program to set an existing column as the index of diamonds DataFrame and restore the index name, and move the index back to a column.
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("\nNew Dataframe:")
diamonds.set_index('color', inplace=True)
print(diamonds.head())
print("\nNow restore the index name:")
diamonds.index.name = 'color'
diamonds.reset_index(inplace=True)
print(diamonds.head())
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 New Dataframe: carat cut clarity depth table price x y z color E 0.23 Ideal SI2 61.5 55.0 326 3.95 3.98 2.43 E 0.21 Premium SI1 59.8 61.0 326 3.89 3.84 2.31 E 0.23 Good VS1 56.9 65.0 327 4.05 4.07 2.31 I 0.29 Premium VS2 62.4 58.0 334 4.20 4.23 2.63 J 0.31 Good SI2 63.3 58.0 335 4.34 4.35 2.75 Now restore the index name: color carat cut clarity depth table price x y z 0 E 0.23 Ideal SI2 61.5 55.0 326 3.95 3.98 2.43 1 E 0.21 Premium SI1 59.8 61.0 326 3.89 3.84 2.31 2 E 0.23 Good VS1 56.9 65.0 327 4.05 4.07 2.31 3 I 0.29 Premium VS2 62.4 58.0 334 4.20 4.23 2.63 4 J 0.31 Good SI2 63.3 58.0 335 4.34 4.35 2.75
Python Code Editor:
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous:Write a Pandas program to set an existing column as the index of diamonds DataFrame.
Next: Write a Pandas program to access a specified Series index and the Series values of diamonds DataFrame.
What is the difficulty level of this exercise?
- Weekly Trends and Language Statistics
- Weekly Trends and Language Statistics