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Pandas Practice Set-1: Create a new 'Quality -color' Series of the diamonds DataFrame

Pandas Practice Set-1: Exercise-4 with Solution

Write a Pandas program to create a new 'Quality -color' Series (use bracket notation to define the Series name) of the 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(diamonds['carat'])
diamonds['Quality–color'] = diamonds.cut + ', ' + diamonds.color
print(diamonds.head())

Sample Output:

   carat      cut color clarity      ...           x     y     z  Quality–color
0   0.23    Ideal     E     SI2      ...        3.95  3.98  2.43       Ideal, E
1   0.21  Premium     E     SI1      ...        3.89  3.84  2.31     Premium, E
2   0.23     Good     E     VS1      ...        4.05  4.07  2.31        Good, E
3   0.29  Premium     I     VS2      ...        4.20  4.23  2.63     Premium, I
4   0.31     Good     J     SI2      ...        4.34  4.35  2.75        Good, J

[5 rows x 11 columns]

Python Code Editor:


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Previous: Write a Pandas program to select a series from a DataFrame. Print the content of the series.
Next: Write a Pandas program to find the number of rows and columns and data type of each column of diamonds Dataframe.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m