pandas isin using join to create regex for multiple values

# pandas isin using join to create regex for multiple values

import pandas as pd

values = ['cat', 'dog', 'hamster']

# creates bool column that returns True if each element in the DataFrame is contained in values
df['isin_example'] = (df['target_col'].str.contains('|'.join(values), case=False))

# Same example but with or 'pig' clause
df['isin_example'] = (df['target_col'].str.contains('|'.join(words), case=False)) | (df['12_Work Location'].str.contains('pig', case=False))