finding one string within a list of others strings

Question

I'm trying to create a new list from an original list but am having some difficulties.

The list is as follows list1 = [training, bicycle, working, carrying, bite, eat]

my new list called ing is designed to only sort out the words containing ing within it so the new list should look like this [training, working, carrying]

the code looks as follows

def ing(lists):
     b = "ing"
     for d in lists:
        if b in d:
            print(d)

        else:
           continue




    return (lists)

when running this with list1, it pretty much prints out list1 rather than isolating the word containing ing.
The problem area appears to be the line

          if b in d:

is there are better way of writing a sorting out a list based on the words within that list as this seems to be the only way

Answer 1

You're never making a new list, only printing things

Try this

list1 = ["training" , "bicycle", "working", "carrying", "bite" , "eat"]
ing = [x for x in list1 if "ing" in x]
print(ing)

Or if you insist on having a function

def filter_ing(l);
    return [x for x in l if "ing" in x]

Answer 2

If you want to do with a method call - Just have your method return a new list with elements of the old list satisfying the search criteria.

Something like:

def ing(lists):
    b = "ing"
    new_list = []
    for d in lists:
        if b in d:
            print(d)
            new_list.append(d)

         else:
             continue



     return new_list

list1 = ['training', 'bicycle', 'working', 'carrying', 'bite', 'eat']
new_list = ing(list1)
print new_list

The list output of the code above is:

['training', 'working', 'carrying']

Doing with a list comprehension works as well as shown by @cricket_007

Answer 3

try this one (New way with similarity to you code)

    def ing(l):
        new=[]
        b="ing"
        for d in l:
            if b in d:
                new.append(d)#I am adding the wording ending with 'ing' to a new list
    #you were missing appending
        print(new)

    l= ['training','bicycle','working','carrying','bite','eat']
    ing(l)#calling_function

The thing you were missing was that you the list you given doesn't consist of string. To put them in string use ' ' or " " as I have done above.

Also, when you are using return then there should be some thing to hold that specific return. You didn't use such thing.

Still any doubt, Feels free to ask via comment. Happy to help.

Answer 4

You can use regular expressions:

import re
l= ['training','bicycle','working','carrying','bite','eat']
new_l = filter(lambda x:re.findall('ing$', x), l)

Output:

['training', 'working', 'carrying']