Pandas: Check whether only numeric values present in a given column of a DataFrame

Last update on April 03 2025 12:56:16 (UTC/GMT +8 hours)

11. Check Numeric Only in Column

Write a Pandas program to check whether only numeric values present in a given column of a DataFrame.

Sample Solution:

Python Code :

import pandas as pd
df = pd.DataFrame({
    'company_code': ['Company','Company a001', '2055', 'abcd', '123345'],
    '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("\nNumeric values present in company_code column:")
df['company_code_is_digit'] = list(map(lambda x: x.isdigit(), df['company_code']))
print(df)

Sample Output:

Original DataFrame:
   company_code date_of_sale   sale_amount
0       Company    12/05/2002      12348.5
1  Company a001    16/02/1999     233331.2
2          2055    25/09/1998         22.5
3          abcd    12/02/2022    2566552.0
4        123345    15/09/1997         23.0

Numeric values present in company_code column:
   company_code          ...          company_code_is_digit
0       Company          ...                          False
1  Company a001          ...                          False
2          2055          ...                           True
3          abcd          ...                          False
4        123345          ...                           True

[5 rows x 4 columns]

For more Practice: Solve these Related Problems:

• Write a Pandas program to verify if a column contains only numeric values and then return a boolean result for each row.
• Write a Pandas program to filter a DataFrame by checking whether a column's values are numeric using a vectorized string method.
• Write a Pandas program to create a new series indicating if each element in a column is numeric and then count the True entries.
• Write a Pandas program to apply a numeric-only check on a column and then replace non-numeric values with NaN.

Python Code Editor:

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