unique words in pandas code example

Example 1: get unique words from pandas dataframe

results = set()
df['text'].str.lower().str.split().apply(results.update)

$ set(['someone', 'ft.jgt', 'my', 'is', 'to', 'going', 'place', 'nickname'])

Example 2: unique words from pandas

results = set()
df['text'].str.lower().str.split().apply(results.update)