Pandas Practice Set-1: Find the diamonds that are either Premium or Ideal

Last update on May 28 2022 13:39:02 (UTC/GMT +8 hours)

Pandas Practice Set-1: Exercise-18 with Solution

Write a Pandas program to find the diamonds that are either Premium or Ideal.

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("\nDiamonds that are either Premium or Ideal:")
result = diamonds[(diamonds.cut == 'Premium') | (diamonds.cut == 'Ideal')]
print(result.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

Diamonds that are either Premium or Ideal:
    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
3    0.29  Premium     I     VS2   62.4   58.0    334  4.20  4.23  2.63
11   0.23    Ideal     J     VS1   62.8   56.0    340  3.93  3.90  2.46
12   0.22  Premium     F     SI1   60.4   61.0    342  3.88  3.84  2.33

Python Code Editor:

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Previous: Write a pandas program to convert a python list to pandas series.
Next: Write a pandas program to find the diamonds that are with a Fair or Good or Premium.

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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