[issue42521] Debug (-d) mode not working in 3.9

miss-islington added the comment: New changeset 9b34f34aa929941576a69a6f7de77f1fb0b96ed6 by Miss Islington (bot) in branch '3.9': bpo-42521: Add note about 'Python -d' only working on debug builds (GH-23607) https://github.com/python/cpython/commit/9b34f34aa929941576a69a6f7de77f1fb0b96ed6 -

[issue42521] Debug (-d) mode not working in 3.9

Change by Pablo Galindo Salgado : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___

[issue42521] Debug (-d) mode not working in 3.9

Change by miss-islington : -- nosy: +miss-islington nosy_count: 4.0 -> 5.0 pull_requests: +22483 pull_request: https://github.com/python/cpython/pull/23615 ___ Python tracker _

[issue42521] Debug (-d) mode not working in 3.9

Pablo Galindo Salgado added the comment: New changeset 99b594404d364b363c184f48338d6ee81bee26dd by Pablo Galindo in branch 'master': bpo-42521: Add note about 'Python -d' only working on debug builds (GH-23607) https://github.com/python/cpython/commit/99b594404d364b363c184f48338d6ee81bee26dd

[issue42521] Debug (-d) mode not working in 3.9

Change by Pablo Galindo Salgado : -- keywords: +patch pull_requests: +22475 stage: -> patch review pull_request: https://github.com/python/cpython/pull/23607 ___ Python tracker __

[issue42521] Debug (-d) mode not working in 3.9

STINNER Victor added the comment: > thanks, it would be great if this were documented in the --help section like > the other options which require a debug build (-X showrefcount) PyConfig.show_ref_count documentation explains that a debug build is required: "Need a debug build of Python (Py_

[issue42521] Debug (-d) mode not working in 3.9

STINNER Victor added the comment: In PyConfig, I chose to name the option "parser_debug" rather than the very generic "debug" name :-) """ Parser debug mode. If greater than 0, turn on parser debugging output (for expert only, depending on compilation options). Incremented by the -d command

[issue42521] Debug (-d) mode not working in 3.9

anthony shaw added the comment: thanks, it would be great if this were documented in the --help section like the other options which require a debug build (-X showrefcount) -- ___ Python tracker ___

[issue42521] Debug (-d) mode not working in 3.9

Pablo Galindo Salgado added the comment: Also, note the -d flag activates the debug mode **in the parser**, not in the tokenizer. -- ___ Python tracker ___ __

[issue42521] Debug (-d) mode not working in 3.9

Pablo Galindo Salgado added the comment: I cannot reproduce it either in 3.9. Building 3.9 in debug mode and using -d works as expected -- ___ Python tracker ___

[issue42521] Debug (-d) mode not working in 3.9

Lysandros Nikolaou added the comment: Hi Anthony, could it be that your 3.9 is not a debug build, while the others are? We only enable parser debug ouput when Python has been build --with-pydebug. Building the 3.9.0 tag --with-pydebug works fine for me. -- _

[issue42521] Debug (-d) mode not working in 3.9

New submission from anthony shaw : I noticed since the new parser implementation, the debug mode in the tokeniser is no longer working. This is the case for 3.9.0 and also 3.9.1rc1. Running python3.9 with a simple application like this: # Demo application def my_function(): proceed Doe