Exercise: Get number of unique values

Get the number of unique observations in the 'Industry' column.
Hint: Use the unique() function to get all the different values, and then count them to see how many there are.

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import pandas as pd
 
df = pd.read_csv('/data/companies.csv')
 
# get number of unique values of 'Industry' column

num_unique =

 
print(num_unique)

Python

Setting up Python environment...

Output