﻿ Pandas: Check whether only lower case or upper case is present in a given column of a DataFrame - w3resource

# Pandas: Check whether only lower case or upper case is present in a given column of a DataFrame

## Pandas: String and Regular Expression Exercise-12 with Solution

Write a Pandas program to check whether only lower case or upper case is present in a given column of a DataFrame.

Sample Solution:

Python Code :

``````import pandas as pd
df = pd.DataFrame({
'company_code': ['ABCD','EFGF', 'hhhh', 'abcd', 'EAWQaaa'],
'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 lower (company_code)?")
df['company_code_ul_cases'] = list(map(lambda x: x.islower(), df['company_code']))
print(df)
print("\nIs Upper (company_code)?")
df['company_code_ul_cases'] = list(map(lambda x: x.isupper(), 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         hhhh    25/09/1998         22.5
3         abcd    12/02/2022    2566552.0
4      EAWQaaa    15/09/1997         23.0

Is lower (company_code)?
company_code          ...          company_code_ul_cases
0         ABCD          ...                          False
1         EFGF          ...                          False
2         hhhh          ...                           True
3         abcd          ...                           True
4      EAWQaaa          ...                          False

[5 rows x 4 columns]

Is Upper (company_code)?
company_code          ...          company_code_ul_cases
0         ABCD          ...                           True
1         EFGF          ...                           True
2         hhhh          ...                          False
3         abcd          ...                          False
4      EAWQaaa          ...                          False

[5 rows x 4 columns]
```

Python Code Editor:

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

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

﻿