Python删除2个字符以下的字符

Question

I have a list of strings (As below format)

 ['email', 'go', 'a', 'instance', 'at', 'boo', 'email', 'message', 'message', 'instance', 'at', 'hello']

How can i eliminate anything under two characters long?

Answer 1

Use a list comprehension:

new_list = [k for k in old_list if len(k) >= 2]

List comprehensions are sometimes very convenient and easy to use, you can read more here and here .

Answer 2

Using list comprehension is often the most readable:

myList = ['email', 'go', 'a', 'instance', 'at', 'boo', 'email', 'message', 'message', 'instance', 'at', 'hello']

myResultList = [x for x in myList if len(x) >=2]

List Comprehension , is a mean to create a new list from iterating on another list. In my exemple for each x in myList, the list comprehension keep x if len(x) <= 2.

you could also do things like:

myResultList = [x + "!oh" for x in myList if len(x) ==2]

that would results in ['go!oh','at!oh','at!oh']