Validating String length in a column using Pandas

Last update on December 21 2024 09:15:14 (UTC/GMT +8 hours)

Pandas: Data Validation Exercise-11 with Solution

Write a Pandas program that validates string length in a DataFrame column.

Following exercise validate all strings in a column meet a minimum length requirement using str.len().

Sample Solution :

Code :

import pandas as pd

# Create a sample DataFrame with name data
df = pd.DataFrame({
    'Name': ['Andrea', 'Rasim', 'Tim', 'Fester']
})

# Validate that all names have a minimum length of 4
valid_names = df['Name'].str.len() >= 4

# Output the result
print(valid_names)

Output:

0     True
1     True
2    False
3     True
Name: Name, dtype: bool

Explanation:

• Created a DataFrame with names of varying lengths.
• Used str.len() to check that all names have a minimum length of 4 characters.
• Outputted a Boolean Series indicating whether each name meets the length requirement.

Python-Pandas Code Editor:

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