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Pandas: Convert continuous values of a column in a given DataFrame to categorical

Pandas: DataFrame Exercise-70 with Solution

Write a Pandas program to convert continuous values of a column in a given DataFrame to categorical.

Input:
{ 'Name': ['Alberto Franco','Gino Mcneill','Ryan Parkes', 'Eesha Hinton', 'Syed Wharton'], 'Age': [18, 22, 40, 50, 80, 5] }
Output:
Age group:
0 kids
1 adult
2 elderly
3 adult
4 elderly
5 kids
Name: age_groups, dtype: category
Categories (3, object): [kids < adult < elderly]

Sample Solution :

Python Code :

import pandas as pd
df = pd.DataFrame({
    'name': ['Alberto Franco','Gino Mcneill','Ryan Parkes', 'Eesha Hinton', 'Syed Wharton', 'Kierra Gentry'],
      'age': [18, 22, 85, 50, 80, 5]
})
print("Original DataFrame:")
print(df)
print('\nAge group:')
df["age_groups"] = pd.cut(df["age"], bins = [0, 18, 65, 99], labels = ["kids", "adult", "elderly"])
print(df["age_groups"])

Sample Output:

Original DataFrame:
             name  age
0  Alberto Franco   18
1    Gino Mcneill   22
2     Ryan Parkes   85
3    Eesha Hinton   50
4    Syed Wharton   80
5   Kierra Gentry    5

Age group:
0       kids
1      adult
2    elderly
3      adult
4    elderly
5       kids
Name: age_groups, dtype: category
Categories (3, object): [kids < adult < elderly]

Python-Pandas Code Editor:

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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