extract dietary attributes

# A>B means the B elements where A is the parent element.
dietary_attrs = element.find_elements(By.CSS_SELECTOR, "div[class*='DietaryAttributes']>span")
# if there aren't any, then `dietary_attrs` will be None and `if` block won't work
# but if there are any dietary attributes, extract the text from them
if dietary_attrs:
    dietary_attrs = [attr.text for attr in dietary_attrs]
else:
    # set the variable to None if there aren't any dietary attributes found.
    dietary_attrs = None