PEP 657
E919523
PEP 657 is a Python enhancement proposal that improves error reporting by adding fine-grained location information (such as per-expression line and column data) to tracebacks.
All labels observed (2)
| Label | Occurrences |
|---|---|
| PEP 657 canonical | 2 |
| PEP 657: Fine-grained error locations in tracebacks | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10763907 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: PEP 657 Context triple: [Python 3.10, implementsPEP, PEP 657]
-
A.
PEP 695
PEP 695 is a Python Enhancement Proposal that introduces a new, more concise syntax for type parameter declarations to improve the language’s support for generics and static typing.
-
B.
PEP 622
PEP 622 is a Python Enhancement Proposal that introduced the design for structural pattern matching syntax later adopted in Python 3.10.
-
C.
PEP 647
PEP 647 is the Python Enhancement Proposal that introduces "user-defined type guards," enabling more precise static type narrowing in Python code.
-
D.
PEP 636
PEP 636 is a Python Enhancement Proposal that serves as a tutorial-style guide to the structural pattern matching feature introduced in Python 3.10.
-
E.
PEP 626
PEP 626 is a Python Enhancement Proposal that precisely defines how Python should map executed bytecode instructions to source code lines, improving debugging, coverage measurement, and tooling accuracy.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: PEP 657 Target entity description: PEP 657 is a Python enhancement proposal that improves error reporting by adding fine-grained location information (such as per-expression line and column data) to tracebacks.
-
A.
PEP 695
PEP 695 is a Python Enhancement Proposal that introduces a new, more concise syntax for type parameter declarations to improve the language’s support for generics and static typing.
-
B.
PEP 622
PEP 622 is a Python Enhancement Proposal that introduced the design for structural pattern matching syntax later adopted in Python 3.10.
-
C.
PEP 647
PEP 647 is the Python Enhancement Proposal that introduces "user-defined type guards," enabling more precise static type narrowing in Python code.
-
D.
PEP 636
PEP 636 is a Python Enhancement Proposal that serves as a tutorial-style guide to the structural pattern matching feature introduced in Python 3.10.
-
E.
PEP 626
PEP 626 is a Python Enhancement Proposal that precisely defines how Python should map executed bytecode instructions to source code lines, improving debugging, coverage measurement, and tooling accuracy.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | Python Enhancement Proposal ⓘ |
| adds |
end column information to code objects
ⓘ
end line information to code objects ⓘ per-expression column information ⓘ per-expression line information ⓘ |
| affects | Python interpreter ⓘ |
| aimsTo |
help identify the exact expression that caused an error
ⓘ
improve debugging experience ⓘ make tracebacks more precise ⓘ |
| author |
Batuhan Taskaya
ⓘ
Matthias Bussonnier ⓘ Pablo Galindo ⓘ |
| benefits |
interactive environments such as REPLs
ⓘ
library authors ⓘ tooling authors ⓘ |
| category | Standards Track ⓘ |
| discusses |
backwards compatibility
ⓘ
changes to the CPython compiler ⓘ performance impact ⓘ |
| enables |
better error messages in notebooks
ⓘ
more accurate highlighting of error locations in IDEs ⓘ |
| focusesOn |
error reporting
ⓘ
tracebacks ⓘ |
| hasTitle | Include Fine-Grained Error Locations in Tracebacks ⓘ |
| implementedIn |
CPython
ⓘ
linked to:
Python reference implementation (CPython)
|
| introducedInVersion | Python 3.11 ⓘ |
| introduces |
end positions for expressions
ⓘ
fine-grained error locations ⓘ per-expression location information ⓘ |
| language | Python ⓘ |
| modifies |
Python code object metadata
ⓘ
traceback formatting ⓘ |
| partOf | Python error handling improvements ⓘ |
| pepUrl | https://peps.python.org/pep-0657/ ⓘ |
| proposalNumber | 657 ⓘ |
| relatedTo |
Python compiler internals
ⓘ
Python debugging tools ⓘ Python tracebacks ⓘ |
| repository | https://github.com/python/peps ⓘ |
| requires | changes to bytecode generation ⓘ |
| shortName | Include Fine-Grained Error Locations in Tracebacks ⓘ |
| status | Accepted ⓘ |
| targets | developers using Python ⓘ |
| type |
Standards Track PEP
ⓘ
linked to:
Standards Track PEPs
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: PEP 657 Description of subject: PEP 657 is a Python enhancement proposal that improves error reporting by adding fine-grained location information (such as per-expression line and column data) to tracebacks.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: PEP 657