bpo-40847: Consider a line with only a LINECONT a blank line #20769
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A line with only a line continuation character should be considered a blank line at tokenizer level, so that only a single NEWLINE token gets emitted. The old parser was working around the issue, but the new parser threw a `SyntaxError` for valid input. For example, an empty line following a line continuation character was interpreted as a `SyntaxError`.
lysnikolaou
added
needs backport to 3.7
needs backport to 3.9
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Should we also backport this to the other bug-fix branches? |
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Only to 3.9. Who knows what else it breaks... |
pablogsal
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Jun 10, 2020
Misc/NEWS.d/next/Core and Builtins/2020-06-09-23-52-32.bpo-40847.4XAACw.rst
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@pablogsal I didn't like the blurb text before, so I changed it up a bit. Could you review it once more, please? |
pablogsal
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Jun 10, 2020
Misc/NEWS.d/next/Core and Builtins/2020-06-09-23-52-32.bpo-40847.4XAACw.rst
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…47.4XAACw.rst Co-authored-by: Pablo Galindo <[email protected]>
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Thanks @lysnikolaou for the PR, and @pablogsal for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9. |
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GH-20795 is a backport of this pull request to the 3.9 branch. |
miss-islington
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Jun 11, 2020
A line with only a line continuation character should be considered a blank line at tokenizer level so that only a single NEWLINE token gets emitted. The old parser was working around the issue, but the new parser threw a `SyntaxError` for valid input. For example, an empty line following a line continuation character was interpreted as a `SyntaxError`. Co-authored-by: Pablo Galindo <[email protected]> (cherry picked from commit 896f4cf) Co-authored-by: Lysandros Nikolaou <[email protected]>
arun-mani-j
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Jul 21, 2020
…H-20769) A line with only a line continuation character should be considered a blank line at tokenizer level so that only a single NEWLINE token gets emitted. The old parser was working around the issue, but the new parser threw a `SyntaxError` for valid input. For example, an empty line following a line continuation character was interpreted as a `SyntaxError`. Co-authored-by: Pablo Galindo <[email protected]>
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A line with only a line continuation character should be considered
a blank line at tokenizer level, so that only a single NEWLINE token
gets emitted. The old parser was working around the issue, but the
new parser threw a
SyntaxErrorfor valid input. For example,an empty line following a line continuation character was interpreted
as a
SyntaxError.https://bugs.python.org/issue40847