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Dorota Parzych
5,706 Pointsname reverse task- problem
name = input("write your name: ")
for letter in name: a_list = [letter] print(letter)
num = len(name) print(num) #checking lenght of the name
for letter in range((num, 0, -1): #reversing the name print(a_list[letter])
2 Answers
Steven Parker
242,770 PointsIt's hard to decipher the unformatted code, but this stood out for me: "a_list = [letter]". This would create a new list containing a single letter each time, which is probably not what you want.
You probably want to construct a new string, which might be done using concatenation like this:
reversed = ""
for letter in name:
reversed = letter + reversed
And for future questions, always format any code using Markdown and provide a link to the course page you are working with.
Manish Giri
16,266 PointsLater on, when you learn about Slicing (if you haven't already), you'll come across another way of reversing a given word -
>>> word = "hello"
>>> rev = word[::-1]
>>> rev
'olleh'
Dorota Parzych
5,706 PointsDorota Parzych
5,706 PointsI don't understand why we write reversed = "" like... there is nothing in-between "...
Steven Parker
242,770 PointsSteven Parker
242,770 PointsThat's, right, there is nothing between the quotes. That creates the variable and starts it out holding an empty string.
Then, inside the loop, it won't cause an error on the first pass when it is combined with the first letter.
Dorota Parzych
5,706 PointsDorota Parzych
5,706 PointsAt first, I thought that if I would make a list of letters I can print it reversed(maybe with the help of ranges...) Anyway now it works and it is much shorter Thank you!
Dorota Parzych
5,706 PointsDorota Parzych
5,706 PointsBut still ... it doesn't seem so intuitive :( cause when I print the variable letter in the for loop it is all in the correct order... while when I concatenate it with an empty string it is reversed...how?
Steven Parker
242,770 PointsSteven Parker
242,770 PointsIt's due to the order of concatenation, "
letter + reversed". Each "letter" is being added in front of the reversed list, which changes the order. If you did it the other way ("reversed + letter") then you would get another string just like you started with.