w3resource

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

Pandas: String and Regular Expression Exercise-10 with Solution

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

Note: isalpha() returns True if all characters in the string are alphabetic and there is at least one character, False otherwise.

Sample Solution:

Python Code :

import pandas as pd
df = pd.DataFrame({
    'company_code': ['Company','Company a001','Company 123', 'abcd', 'Company 12'],
    '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("\nWhether Alphabetic values present in company_code column?")
df['company_code_is_alpha'] = list(map(lambda x: x.isalpha(), 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   Company 123    25/09/1998         22.5
3          abcd    12/02/2022    2566552.0
4    Company 12    15/09/1997         23.0

Whether Alphabetic values present in company_code column?
   company_code          ...          company_code_is_alpha
0       Company          ...                           True
1  Company a001          ...                          False
2   Company 123          ...                          False
3          abcd          ...                           True
4    Company 12          ...                          False

[5 rows x 4 columns]

Python Code Editor:


Have another way to solve this solution? Contribute your code (and comments) through Disqus.

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

What is the difficulty level of this exercise?

Test your Python skills with w3resource's quiz



Python: Tips of the Day

Returns True if there are duplicate values in a flat list, False otherwise

Example:

def tips_duplicates(lst):
  return len(lst) != len(set(lst))

x = [2, 4, 6, 8, 4, 2]
y = [1, 3, 5, 7, 9]
print(tips_duplicates(x))
print(tips_duplicates(y))

Output:

True
False