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Pandas: Check whether only space is present in a given column of a DataFrame

Pandas: String and Regular Expression Exercise-14 with Solution

Write a Pandas program to check whether only space is present in a given column of a DataFrame.

Sample Solution:

Python Code :

import pandas as pd
df = pd.DataFrame({
    'company_code': ['Abcd','EFGF ', '  ', 'abcd', ' '],
    'date_of_sale ': ['12/05/2002','16/02/1999','25/09/1998','12/02/2022','15/09/1997'],
    'sale_amount': [12348.5, 233331.2, 22.5, 2566552.0, 23.0]})

print("Original DataFrame:")
print(df)
print("\nIs space is present?")
df['company_code_is_title'] = list(map(lambda x: x.isspace(), df['company_code']))
print(df)

Sample Output:

Original DataFrame:
  company_code date_of_sale   sale_amount
0         Abcd    12/05/2002      12348.5
1        EFGF     16/02/1999     233331.2
2                 25/09/1998         22.5
3         abcd    12/02/2022    2566552.0
4                 15/09/1997         23.0

Is space is present?
  company_code          ...          company_code_is_title
0         Abcd          ...                          False
1        EFGF           ...                          False
2                       ...                           True
3         abcd          ...                          False
4                       ...                           True

[5 rows x 4 columns]

Python Code Editor:


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Next: Write a Pandas program to get the length of the string present of a given column in a 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