What this snippet does
Seeking to offset 0 with 'whence=2' positions the cursor at the end of the stream for appending.
Expected output
abcdef
Why practise typing this
Typing file i/o (advanced) 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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