TypeError: 'str' object does not support item assignment in Python

Dung Do Tien Aug 31 2021 566

Hello you guys, I am a newbie in Python and I'm also studying more about Python.

I have a small assignment, I want to build some colors from a list color. Like this:

 colors=["Blue", "Green", "Black", "Yellow", "Brown", "Silver"]

def build(s):
    count = 0
    for i in range(0,len(s)):
    return s


But I get an exception TypeError: 'str' object does not support item assignment when I run code above.

 Traceback (most recent call last):
  File "main.py", line 9, in <module>
  File "main.py", line 6, in build
TypeError: 'str' object does not support item assignment

And I am using python 3.8.2

Anyone can explain it to me? How can I solve it?

Thanks for any response.

Have 1 answer(s) found.
  • D

    David Logacho Aug 31 2021

    Python does not allow you to swap out characters in a string for another one; strings are immutable. What you'll need to do is create a totally different string and return that instead.

    See an example below:

     colors=["Blue", "Green", "Black", "Yellow", "Brown", "Silver"]
    def build(s):
        str_color = ""
        for i in range(0,len(s)):
            str_color= str_color + " " + colors[i]
        return str_color


     Blue Green Black Yellow Brown

    Hope it's the answer for you.

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