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how to replace a number with a word in a while loop?

hi! I'm still a beginner in python and I have to write a program with a while loop in which I replace a number with a word (f.e.: 1 = one) in a string (f.e.: 2er41g = 2er4oneg). i can do it with a for loop but I can't change it without getting an error :( and I'm not allowed to use replace() or similar modules. Thank you for your help!

29th Nov 2018, 5:35 PM
broadenyourmindbnr
broadenyourmindbnr - avatar
5 Respuestas
+ 2
Oh, your code was pretty good! The idea of using the result variable is perfect! There were probably some typos. I tidied it up a little bit. user_string = "input9" result = "" for char in user_string: if char == "9": result += "nine" else: result += char print(result) Now to change it to while, instead of directly iterating over the characters of the string, we have to use an index i and access the character at position i of the string. i will be initialized as zero and increase by 1 at each step until it reaches the length of the string. user_string = "input9" i = 0 result = "" while i < len(user_string): if user_string[i] == "9": result += "nine" else: result += user_string[i] i += 1 print(result) Does that make sense? Let me know. ☺
29th Nov 2018, 6:28 PM
Kishalaya Saha
Kishalaya Saha - avatar
+ 3
Can you please share your code with for loop? Then we can help you fix the error, and change it to while loop too ;) Thanks!
29th Nov 2018, 6:02 PM
Kishalaya Saha
Kishalaya Saha - avatar
+ 2
You're welcome, broadenyourmindbnr 😊
29th Nov 2018, 7:46 PM
Kishalaya Saha
Kishalaya Saha - avatar
+ 1
Sure! user_input = input9 x = user_input #thats an input / string result = "" for i in user_string: if i == "9": i = "nine" result += i print(result) I'm looking for the same output in a while loop ;) Thanks!
29th Nov 2018, 6:13 PM
broadenyourmindbnr
broadenyourmindbnr - avatar
+ 1
Yes! Thank you so much! And you were sooo fast!! I think I understand it now much better!! Thanks!! Makes sense and very helpful! 🤗
29th Nov 2018, 6:59 PM
broadenyourmindbnr
broadenyourmindbnr - avatar