return house_price, rent_price, home_size returns a tuple structured as (house_price, rent_price, home_price,)
So you have to replace
house_price = zillow.zillow_data(address, zipcode)
rent_price = zillow.zillow_data(address, zipcode)
home_size = zillow.zillow_data(address, zipcode)
with:
house_price, rent_price, home_price = zillow.zillow_data(address, zipcode)
Because every call to zillow.zillow_data(address, zipcode) just returns same tuple over and over.
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