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Convert some staticmethod to classmethod #3710

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merged 3 commits into from
Mar 26, 2024

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DanielYang59
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@DanielYang59 DanielYang59 commented Mar 26, 2024

Summary

Major changes:

Rationale:

These methods create an instance of the Class itself, and should be a classmethod, not staticmethod.

Summary by CodeRabbit

  • Refactor
    • Enhanced class method flexibility across various modules by converting static methods to class methods and updating method signatures for improved inheritance and extensibility.
    • Introduced type hints for return types to ensure type safety and clarity in method definitions.
    • Streamlined code by leveraging class inheritance, making the codebase more extensible and maintainable.
  • Documentation
    • Updated method signatures in documentation to reflect changes from static to class methods and the introduction of type hints.

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coderabbitai bot commented Mar 26, 2024

Walkthrough

The recent updates in the pymatgen library focus on transitioning static methods to class methods, incorporating type hinting with Self for return types. These changes aim to improve class inheritance, flexibility, and code uniformity, enhancing the library's extensibility and adaptability for future enhancements.

Changes

Files Change Summary
.../alchemy/transmuters.py
.../analysis/graphs.py
.../core/operations.py
.../io/abinit/pseudos.py
.../io/babel.py
.../io/cp2k/inputs.py
.../io/feff/inputs.py
.../io/pwmat/inputs.py
.../io/vasp/inputs.py
.../phonon/thermal_displacements.py
.../transformations/standard_transformations.py
.../util/provenance.py
Shifted from @staticmethod to @classmethod, updated type hinting with Self, and adjusted method signatures to use cls for improved inheritance and flexibility.
.../transformations/advanced_transformations.py Made minor import adjustments with no significant changes to logic or control flow.

"In the realm of code where the bits entwine,
🐇 A rabbit hopped through, making pymatgen shine.
From static to class, with a magical twist,
Methods now flexible, in an extensive list.
🌟 With every hop, a better design,
For a library more robust, and oh so fine.
Celebrate we shall, with carrots so sweet,
For changes so grand, they deserve a tweet!" 🥕🎉

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Review Status

Actionable comments generated: 7

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between 2bd3906 and 0baee35.
Files selected for processing (13)
  • pymatgen/alchemy/transmuters.py (1 hunks)
  • pymatgen/analysis/graphs.py (8 hunks)
  • pymatgen/core/operations.py (3 hunks)
  • pymatgen/io/abinit/pseudos.py (1 hunks)
  • pymatgen/io/babel.py (2 hunks)
  • pymatgen/io/cp2k/inputs.py (2 hunks)
  • pymatgen/io/feff/inputs.py (2 hunks)
  • pymatgen/io/pwmat/inputs.py (5 hunks)
  • pymatgen/io/vasp/inputs.py (9 hunks)
  • pymatgen/phonon/thermal_displacements.py (3 hunks)
  • pymatgen/transformations/advanced_transformations.py (1 hunks)
  • pymatgen/transformations/standard_transformations.py (3 hunks)
  • pymatgen/util/provenance.py (4 hunks)
Files skipped from review due to trivial changes (1)
  • pymatgen/transformations/advanced_transformations.py
Additional comments: 26
pymatgen/util/provenance.py (4)
  • 79-88: The conversion of from_dict to a class method in HistoryNode is correctly implemented. Using cls allows for better flexibility and inheritance support, aligning with the PR's objectives.
  • 99-109: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [90-106]

The conversion of parse_history_node to a class method in HistoryNode is correctly implemented. This change enhances the method's ability to work with inherited classes by utilizing cls.

  • 132-139: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [135-142]

The conversion of from_dict to a class method in Author is correctly implemented. This change is consistent with the PR's goal of enhancing class inheritance and flexibility.

  • 149-160: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [136-157]

The conversion of parse_author to a class method in Author is correctly implemented. This method's adaptation to use cls improves its compatibility with inheritance, aligning with the PR's objectives.

pymatgen/io/babel.py (1)
  • 333-340: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [336-347]

The conversion of from_molecule_graph to a class method in BabelMolAdaptor is correctly implemented. Utilizing cls enhances the method's flexibility and inheritance capabilities, which is in line with the PR's objectives.

pymatgen/alchemy/transmuters.py (1)
  • 294-301: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [297-312]

The conversion of from_filenames to a class method in PoscarTransmuter is correctly implemented. However, the return type annotation is StandardTransmuter instead of Self. Using Self as the return type would be more consistent with the PR's goal of enhancing class inheritance and flexibility.

Consider using Self as the return type annotation for from_filenames to better align with the PR's objectives and Python's typing conventions.

pymatgen/core/operations.py (1)
  • 58-64: The change from @staticmethod to @classmethod for the from_rotation_and_translation method, along with the update of the return type annotation from SymmOp to Self, is a positive modification. It aligns with the objective of enhancing flexibility and extensibility by leveraging class inheritance. Good job on making these changes.
pymatgen/phonon/thermal_displacements.py (2)
  • 18-22: Moving the import phonopy block to the top and wrapping it in a try-except block is a good practice for handling optional dependencies. Additionally, adding from typing_extensions import Self is necessary for the changes made in the method from_Ucif to use Self for type hinting. These changes are well-implemented.
  • 414-420: The change from @staticmethod to @classmethod for the from_Ucif method, along with the update of the return type annotation from the class name to Self, is a positive modification. It aligns with the objective of enhancing flexibility and extensibility by leveraging class inheritance. Well done on making these changes.
pymatgen/io/pwmat/inputs.py (3)
  • 16-16: The import of Self from typing_extensions is correctly added to support the use of Self in type annotations for class methods that return an instance of the class. This aligns with the PR's objective to enhance class design and maintain consistency.
  • 501-508: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [504-535]

The conversion of from_structure to a class method in the GenKpt class is correctly implemented. Using cls instead of the class name GenKpt when returning an instance of the class enhances flexibility and supports inheritance, which is consistent with the PR's objectives.

  • 603-610: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [606-618]

The conversion of from_structure to a class method in the HighSymmetryPoint class is correctly implemented. The use of cls to return an instance of the class instead of directly referencing the class name is a good practice for enhancing class flexibility and inheritance support.

pymatgen/io/feff/inputs.py (1)
  • 197-206: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [200-216]

The conversion of from_cif_file from a static method to a class method is correctly implemented and aligns with the objectives of enhancing flexibility and extensibility in the pymatgen codebase. This change allows for better utilization of class inheritance when creating instances, which is a good practice for factory methods like this one.

pymatgen/transformations/standard_transformations.py (1)
  • 28-28: The import of Self from typing_extensions is correctly added to support the updated return type annotations. This is a good use of modern Python typing features to enhance code readability and maintainability.
pymatgen/io/abinit/pseudos.py (1)
  • 111-112: The change from staticmethod to classmethod for the from_file method in the Pseudo class is correctly implemented. Using cls as the first argument allows for more flexible and dynamic instance creation that respects inheritance hierarchies. This modification aligns with the PR objectives to enhance the codebase's flexibility and extensibility.
pymatgen/io/cp2k/inputs.py (1)
  • 2129-2136: > 📝 NOTE

This review was outside the diff hunks, and no overlapping diff hunk was found. Original lines [273-274]

In the __eq__ method of the Section class, the comparison d2.as_dict() == s2.as_dict() may not be the most efficient way to check for equality due to the potential overhead of converting the entire object tree to dictionaries. Consider implementing a more direct comparison method.

pymatgen/io/vasp/inputs.py (6)
  • 1141-1152: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1146-1159]

The gamma_automatic method in the Kpoints class correctly implements the creation of an automatic Gamma centered Kpoint grid. It's crucial to ensure that the kpts and shift arguments are properly validated to prevent invalid configurations.

  • 1156-1165: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1161-1175]

The monkhorst_automatic method in the Kpoints class is implemented correctly for generating an automatic Monkhorst pack Kpoint grid. Similar to previous methods, it's important to validate the kpts and shift arguments.

  • 1172-1181: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1177-1215]

The automatic_density method in the Kpoints class provides a way to generate an automatic Kpoint object based on a structure and a kpoint density. This method is crucial for dynamic Kpoint generation. Ensure that the structure and kppa arguments are validated and that the method correctly handles different lattice types and symmetry considerations.

  • 1212-1221: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1217-1249]

The automatic_gamma_density method in the Kpoints class is implemented to always use Gamma centered meshes for GW calculations. It's important to ensure that the structure and kppa arguments are validated and that the method correctly calculates the number of divisions along reciprocal lattice vectors.

  • 1267-1278: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1251-1309]

The automatic_density_by_lengths method in the Kpoints class allows for specifying k-point density normalized by lattice constants. This method is particularly useful for high-throughput calculations where uniform k-point density across different structures is desired. Ensure that the structure and length_densities arguments are validated and that the method correctly handles different lattice types and symmetry considerations.

  • 1306-1315: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1311-1340]

The automatic_linemode method in the Kpoints class is designed for generating KPOINTS in line mode, typically used for band structure calculations. It's important to ensure that the divisions and ibz arguments are validated and that the method correctly handles high symmetry paths.

pymatgen/analysis/graphs.py (4)
  • 196-203: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [199-216]

The method with_edges in StructureGraph has been correctly converted from a static method to a class method, utilizing cls to call another class method with_empty_graph. This change enhances flexibility and inheritance, aligning with the PR's objective. However, there's a minor improvement that can be made to the exception handling for edge tuples.

Consider adding more specific error messages for different types of TypeError that could occur when unpacking edge tuples. This would help in debugging and understanding the exact nature of the error.

-                raise ValueError("Edges must be given as (from_index, to_index, from_image, to_image) tuples")
+                if len(edge) != 4:
+                    raise ValueError("Edges must be given as (from_index, to_index, from_image, to_image) tuples")
+                else:
+                    raise ValueError("Edge indices and images must be integers")
  • 250-259: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [253-270]

The conversion of with_local_env_strategy in StructureGraph to a class method is appropriate and follows the PR's objective. The use of cls to call with_empty_graph is consistent with the objective of enhancing class inheritance. The method's implementation appears logical and correctly handles the strategy for creating edges based on local environment strategies.

This change correctly implements the intended functionality and adheres to best practices for utilizing class methods.

  • 1625-1632: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1628-1644]

The method with_edges in MoleculeGraph has been updated to a class method, which is in line with the PR's objectives. The implementation uses cls to instantiate a new MoleculeGraph object through with_empty_graph, which is a good use of class inheritance. However, there's an opportunity to improve the error handling similar to the StructureGraph class.

Enhance the error handling for unpacking the edge tuples to provide more specific feedback on the nature of the error, improving debugging and clarity.

-                raise ValueError("Edges must be given as (from_index, to_index) tuples")
+                if len(edge) != 2:
+                    raise ValueError("Edges must be given as (from_index, to_index) tuples")
+                else:
+                    raise ValueError("Edge indices must be integers")
  • 1669-1676: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1672-1689]

The with_local_env_strategy method in MoleculeGraph has been correctly converted to a class method, which aligns with the PR's objectives. The method's logic for handling strategies and creating edges based on local environment information is appropriate. The conversion enhances the method's flexibility and inheritance capabilities.

This change is consistent with the objective of leveraging class inheritance and correctly implements the intended functionality.

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@DanielYang59
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@coderabbitai Can you find if there is any other methods decorated as staticmethod (returns an instance of the Class itself), but should be a classmethod instead, across the entire code base?

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coderabbitai bot commented Mar 26, 2024

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For best results, initiate chat on the files or code changes.

@DanielYang59, I've identified numerous files across the pymatgen codebase that contain methods decorated with @staticmethod. Given the extensive list, it would be beneficial to manually review these methods to determine if any should be converted to @classmethod based on whether they return an instance of the class itself. Here are some of the files where @staticmethod methods were found:

  • pymatgen/io/vasp/inputs.py
  • pymatgen/core/operations.py
  • pymatgen/analysis/structure_analyzer.py
  • pymatgen/symmetry/analyzer.py
  • pymatgen/transformations/advanced_transformations.py

This list is not exhaustive but provides a starting point for further investigation.

Analysis chain
Scripts executed

The following scripts were executed for the analysis:


Script:

#!/bin/bash
# Search the entire codebase for methods decorated with `staticmethod`.
# This script uses ripgrep (rg) to find occurrences of `@staticmethod` and prints the file names and method signatures.
rg --multiline '@staticmethod\ndef ' --glob '*.py'

Length of output: 52



Script:

#!/bin/bash
# Adjusting the search to find occurrences of `@staticmethod` more reliably.
# This script uses ripgrep (rg) to find occurrences of `@staticmethod` and prints the file names where they are found.
rg '@staticmethod' --glob '*.py' --files-with-matches

Length of output: 2855

@DanielYang59 DanielYang59 marked this pull request as ready for review March 26, 2024 02:52
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Review Status

Actionable comments generated: 0

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between 0baee35 and 8067df1.
Files selected for processing (2)
  • pymatgen/io/cp2k/inputs.py (3 hunks)
  • pymatgen/transformations/standard_transformations.py (4 hunks)
Files skipped from review as they are similar to previous changes (2)
  • pymatgen/io/cp2k/inputs.py
  • pymatgen/transformations/standard_transformations.py

@DanielYang59
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@janosh, please review. Thanks a lot.

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thanks @DanielYang59, great work! really appreciate all your effort bringing pymatgen code into shape 👍

@janosh janosh added fix Bug fix PRs linting Linting and quality assurance labels Mar 26, 2024
@janosh janosh merged commit f254435 into materialsproject:master Mar 26, 2024
22 checks passed
@DanielYang59 DanielYang59 deleted the correct-cls-method-type branch March 26, 2024 07:37
@DanielYang59
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Glad I could help. Thanks for reviewing @janosh

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