What this snippet does
Self indicates the method returns an instance of the exact class it belongs to.
Expected output
<__main__.Builder object at 0x...>
Why practise typing this
Typing advanced typing (3.11+) code builds muscle memory for the symbols and indentation Python uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
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