Python Unnest Comma Separated Values in List

Question

I have the follwoing list:

my_list = ['1', '7', '9, 11', '14']

How do I unnest comma-separated items like so:

new_list = ['1', '7', '9', '11', '14']

Answer 1

Here's one way:

new_list = []
for x in my_list:
    new_list += [a.strip() for a in x.split(",")]

Answer 2

这里是

 new_list = [j.strip() for i in my_list for j in i.split(',')]