Remove empty strings from a list of strings

Question

I want to remove all empty strings from a list of strings in python.

My idea looks like this:

while \'\' in str_list:
    str_list.remove(\'\')
         


        

Answer 1

Use filter:

newlist=filter(lambda x: len(x)>0, oldlist) 

The drawbacks of using filter as pointed out is that it is slower than alternatives; also, lambda is usually costly.

Or you can go for the simplest and the most iterative of all:

# I am assuming listtext is the original list containing (possibly) empty items
for item in listtext:
    if item:
        newlist.append(str(item))
# You can remove str() based on the content of your original list

this is the most intuitive of the methods and does it in decent time.