[Webkit-unassigned] [Bug 206840] New: Python 3: generate-js-builtins hits SyntaxWarning for "is 0"

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Jan 27 13:15:03 PST 2020


https://bugs.webkit.org/show_bug.cgi?id=206840

            Bug ID: 206840
           Summary: Python 3: generate-js-builtins hits SyntaxWarning for
                    "is 0"
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: stephan.szabo at sony.com

After switching up to python 3.8, generate-js-builtins.py hits a SyntaxWarning for the use of "is 0".

Apparently, per https://bugs.python.org/issue34850 this sort of usage happens to work on CPython by accident, but is not guaranteed to work on other python implementation or necessarily continue working in CPython.
The warning suggests replacing is with == for such cases.

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