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Change specification for # type: ignore #1072

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merged 2 commits into from
May 22, 2019
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Change specification for # type: ignore #1072

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2d6f8b3
Change specification for `# type: ignore`
JelleZijlstra May 22, 2019
91bb4c2
clarify order for top-level type ignore
JelleZijlstra May 22, 2019
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11 changes: 6 additions & 5 deletions pep-0484.txt
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Expand Up @@ -1515,10 +1515,10 @@ error refers to::
'not_found': http.client.NOT_FOUND # type: ignore
}

A ``# type: ignore`` comment on a line by itself is equivalent to
adding an inline ``# type: ignore`` to each line until the end of
the current indented block. At top indentation level this has
effect of disabling type checking until the end of file.
A ``# type: ignore`` comment on a line by itself at the top of a file,
before any docstrings, imports, or other executable code, silences all
errors in the file. Blank lines and other comments, such as shebang
lines and coding cookies, may precede the ``# type: ignore`` comment.

In some cases, linting tools or other comments may be needed on the same
line as a type comment. In these cases, the type comment should be before
Expand All @@ -1527,7 +1527,8 @@ other comments and linting markers:
# type: ignore # <comment or other marker>

If type hinting proves useful in general, a syntax for typing variables
may be provided in a future Python version.
may be provided in a future Python version. (**UPDATE**: This syntax
was added in Python 3.6 through PEP 526.)

Casts
=====
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