Allow dis.dis to take file
#6078
Conversation
WalkthroughThe Changes
Sequence Diagram(s)sequenceDiagram
participant Caller
participant VM
participant dis
participant disassemble_to_file
participant FileObj
participant Stdout
Caller->>dis: call with DisArgs (obj, optional file)
dis->>disassemble_to_file: delegate with code object, file, vm
alt file is provided
disassemble_to_file->>FileObj: call write(output)
alt FileObj has write
FileObj-->>disassemble_to_file: write succeeds
else FileObj lacks write
disassemble_to_file-->>VM: raise TypeError
end
else no file provided
disassemble_to_file->>Stdout: print output
end
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Poem
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Actionable comments posted: 0
🧹 Nitpick comments (1)
stdlib/src/dis.rs (1)
58-82: Consider flushing stdout and improving error handling.The implementation is functionally correct, but there are a few areas for improvement:
- Stdout flushing: The
print!macro doesn't automatically flush, which may cause delayed output in some scenarios.- Error handling: The current approach is adequate but could provide more context.
Consider this improvement for better stdout handling:
None => { // Write to stdout print!("{output}"); + use std::io::Write; + std::io::stdout().flush().ok(); }The error handling for the file object is appropriate and follows Python conventions by checking for the
writemethod's existence.
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📒 Files selected for processing (1)
stdlib/src/dis.rs(2 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)
**/*.rs: Follow the default rustfmt code style (cargo fmtto format)
Always run clippy to lint code (cargo clippy) before completing tasks. Fix any warnings or lints that are introduced by your changes
Follow Rust best practices for error handling and memory management
Use the macro system (pyclass,pymodule,pyfunction, etc.) when implementing Python functionality in Rust
Files:
stdlib/src/dis.rs
🧠 Learnings (1)
📚 Learning: applies to **/*.rs : use the macro system (`pyclass`, `pymodule`, `pyfunction`, etc.) when implement...
Learnt from: CR
PR: RustPython/RustPython#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-19T03:16:56.511Z
Learning: Applies to **/*.rs : Use the macro system (`pyclass`, `pymodule`, `pyfunction`, etc.) when implementing Python functionality in Rust
Applied to files:
stdlib/src/dis.rs
🔇 Additional comments (5)
stdlib/src/dis.rs (5)
5-10: LGTM: Import additions are appropriate.The added imports
OptionalArgand the reorganization of imports follow Rust conventions and support the new functionality correctly.
12-18: Well-structured argument handling with proper PyO3 macros.The
DisArgsstruct properly uses the#[derive(FromArgs)]macro with appropriate argument attributes. The#[pyarg(any, optional)]correctly allows thefileparameter to be passed as a keyword argument.
21-22: Function signature change maintains backward compatibility.The restructured
disfunction signature usingDisArgsmaintains the same Python interface while enabling the new file parameter functionality. The delegation todisassemble_to_fileis clean and appropriate.Also applies to: 46-46
50-56: Enhanceddisassemblefunction signature follows Python conventions.The updated signature with
OptionalArg<PyObjectRef>for the file parameter correctly matches Python'sdis.disassemblebehavior and properly delegates to the shared implementation.
58-82: Implementation correctly mirrors Python's dis module behavior.The
disassemble_to_filefunction properly implements the expected behavior:
- Accepts optional file objects with
write()methods- Falls back to stdout when no file is provided
- Raises appropriate
TypeErrorfor invalid file objects- Maintains consistency with Python's
dismodule interface
Summary by CodeRabbit
New Features
Bug Fixes