Emulate Terminal Output in Dash UI Textarea Component

See here for the original answer.

The way the project I'm working on captures the stdout is with contextlib. Below is a small code sample that should get the information you are looking for, which you can then append to the value of the textarea:

from contextlib import redirect_stdout
import io

with redirect_stdout(io.StringIO()) as output:
    # Your code that generates output here
    ...

    # This will get the lines from the output
    lines = output.getvalue().splitlines()

    # Append `lines` to the textarea content here
    ...

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