No Numerals code coaching

Question

I didn't get what was gone wrong with my code in "No Numerals" coding concepts's case 3?
https://sololearn.com/compiler-playground/c5gn18yeTVUL/?ref=app

Answer 1

Given "10 years" for input, the code outputs "onezero years" while "ten years" was expected.

Answer 2

Surajit Roy ,

this part of the code causes an issue:

we have 2 nested loops, this is not required.

...
words = phrase.split()
updated_words = []
#for word in words: NOT required
new_word = ' '.join([digit_to_word[word] if word in digit_to_word else word for word in words])
^ space needed ^^^^^^^ needs to be the splitted list
updated_words.append(new_word)
return ' '.join(updated_words)
...

Answer 3

I got it

Answer 4

Can you help me to explain python