Native Python function to remove NoneType elements from list?

Question

I\'m using Beautiful Soup in Python to scrape some data from HTML files. In some cases, Beautiful Soup returns lists that contain both string and NoneType

Answer 1

You can do this using list comprehension:

clean = [x for x in lis if x != None]

As pointed in the comments you could also use is not, even if it essentially compiles to the same bytecode:

clean = [x for x in lis if x is not None]

You could also used filter (note: this will also filter empty strings, if you want more control over what you filter you can pass a function instead of None):

clean = filter(None, lis)

There is always the itertools approach if you want more efficient looping, but these basic approaches should work for most day to day cases.