keyword_extraction_example_python.py

import string 

# Some random document
document = """BigQuery sure makes life easier for data scientists. You can query data for insights, build high quality ML models and easily interface with other Google Cloud services."""

# Remove punctuation
doc_wo_punct = document.translate(str.maketrans('', '', string.punctuation))

# Some keywords we'd like to extract
keywords =  ["bigquery", "ML", "insights", "SQL", "analysis"]

# Get terms from the document 
doc_terms = [x.lower().strip() for x in doc_wo_punct.split()]

# Get terms from document which occurr in our keywords list - yay
# Yes a set lookup is O(1) I know -- this is just illustrative 
doc_terms_from_keywords = [x for x in doc_terms if x in [j.lower() for j in keywords]]
print(doc_terms_from_keywords)

>> ['bigquery', 'insights', 'ml']