Replace multiple words in string with dictionary (python)

Question

I want the user to input a phrase, and when the words "happy"/"sad" are within the phrase, I want the program to return those words replaces with their values in the dictionary. Here is my code:

# dictionary
thesaurus = {
              "happy": "glad",
              "sad"  : "bleak"
            }

# input
phrase = input("Enter a phrase: ")

# turn input into list
part1 = phrase.split()
part2 = list(part1)

# testing input
counter = 0
for x in part2:
    if part2[counter] in thesaurus.keys():
        phrase.replace(part2[counter], thesaurus.values()) # replace with dictionary value???
        print (phrase)
    counter += 1

The code works except I can't seem to figure out how to replace multiple words to get the program to print the replaced words.

So if the user enters

"Hello I am sad"

the desired output would be

"Hello I am bleak"

Any help would be appreciated!

how desireable output will look like? need positive control/test — aaaaa says reinstate Monica
– aaaaa says reinstate Monica, Commented May 8, 2016 at 18:06
and what is exactly the problem you want to solve? replace some words in phrase with synonyms? — aaaaa says reinstate Monica
– aaaaa says reinstate Monica, Commented May 8, 2016 at 18:10
When you split, it already returns a list, so you don't need to cast to list. — JulienD
– JulienD, Commented May 8, 2016 at 18:11

JulienD · Accepted Answer · 2016-05-08 18:11:02Z

3

Translate all words in the input sentence, then join the translated parts:

translated = []
for x in part2:
    t = thesaurus.get(x, x)  # replaces if found in thesaurus, else keep as it is
    translated.append(t)

newphrase = ' '.join(translated)

answered May 8, 2016 at 18:11

JulienD

7,32310 gold badges57 silver badges88 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Danny Garcia Over a year ago

thanks! If I want the new word from the dictionary to be printed in caps, where would I add the ".upper()" ?

JulienD Over a year ago

If only when the word is found, I'd use something like t = thesaurus[x].upper() if thesaurus.get(x) else x

Danny Garcia Over a year ago

thanks! If i were to change the code to include more words associated to the key of the dictionary, for example, "sad" :["bleak", "blue", "depressed"] , how would I change the above answer to return a random word from the list within the dictionary? I am trying to include a popitem() but can't seem to place it in the right place within the code

JulienD Over a year ago

Using pop() will remove the item from the dictionary, so it is not a good idea. Secondly, if you want a random element, either generate a random index to take an element from the list, or use a set and draw from it. This answer can be useful: stackoverflow.com/questions/59825/…. So in my example, draw from set(t) if x is found in the dictionaty.

Collectives™ on Stack Overflow

Replace multiple words in string with dictionary (python)

1 Answer 1

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related