Python Building Sudoku solver

Python
1

Step 14

Now, you would join the elements of the segment (part) with the pipe character (|).

For that, first, use a for loop for item in part to access all elements.

Then, use the join() method on the | character to join the elements of the segment (part).

After that, convert each element to a string using str(item).

for square_no, part in enumerate([line[:3], line[3:6], line[6:]], start=1):
                for item in part (|):
                    part.join(I)
                    str(part)

what do I have to do here?

MOD EDIT: Link to the step:
https://www.freecodecamp.org/learn/scientific-computing-with-python/learn-classes-and-objects-by-building-a-sudoku-solver/step-14

2

I’ve edited your code for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

Pre-formatted-text
Pre-formatted-text1356×380 401 KB

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').

3

For that, first, use a for loop for item in part to access all elements.

This instruction should really say to use a list comprehension, not a loop.

use the join() method on the | character

This is the Pipe character | not a capital i. It’s above the Enter key with the backslash. You are using join on part instead of pipe |

convert each element to a string using str(item)

It gives you the correct answer here, str(item) but you have written str(part)

  1. Start with calling join() on the pipe character |
  2. In the brackets of join() use a list comprehension for item in part
  3. use the list comprehension to convert each item to a string using str(item)