move orientation methods from graph.py to orientations.py
#38809
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also move |
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A doctest was failing when a different mip solver was used by default (cplex in my case). The new test is robust. |
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vbraun
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Jan 23, 2025
sagemathgh-39124: unify and simplify orientation methods Fixes sagemath#38758. This PR follows sagemath#38758, sagemath#38757, sagemath#38778, sagemath#38809. it adds a helper method that initialize a directed copy of a graph with the same set of vertices. It copies all attributes. It helps simplifying the code of several orientation methods and avoids code duplication. ### 📝 Checklist <!-- Put an `x` in all the boxes that apply. --> - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about. - [x] I have linked a relevant issue or discussion. - [x] I have created tests covering the changes. - [x] I have updated the documentation and checked the documentation preview. ### ⌛ Dependencies <!-- List all open PRs that this PR logically depends on. For example, --> <!-- - sagemath#12345: short description why this is a dependency --> <!-- - sagemath#34567: ... --> URL: sagemath#39124 Reported by: David Coudert Reviewer(s): Travis Scrimshaw
vbraun
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Jan 25, 2025
sagemathgh-39124: unify and simplify orientation methods Fixes sagemath#38758. This PR follows sagemath#38758, sagemath#38757, sagemath#38778, sagemath#38809. it adds a helper method that initialize a directed copy of a graph with the same set of vertices. It copies all attributes. It helps simplifying the code of several orientation methods and avoids code duplication. ### 📝 Checklist <!-- Put an `x` in all the boxes that apply. --> - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about. - [x] I have linked a relevant issue or discussion. - [x] I have created tests covering the changes. - [x] I have updated the documentation and checked the documentation preview. ### ⌛ Dependencies <!-- List all open PRs that this PR logically depends on. For example, --> <!-- - sagemath#12345: short description why this is a dependency --> <!-- - sagemath#34567: ... --> URL: sagemath#39124 Reported by: David Coudert Reviewer(s): Travis Scrimshaw
vbraun
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Jan 26, 2025
sagemathgh-39124: unify and simplify orientation methods Fixes sagemath#38758. This PR follows sagemath#38758, sagemath#38757, sagemath#38778, sagemath#38809. it adds a helper method that initialize a directed copy of a graph with the same set of vertices. It copies all attributes. It helps simplifying the code of several orientation methods and avoids code duplication. ### 📝 Checklist <!-- Put an `x` in all the boxes that apply. --> - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about. - [x] I have linked a relevant issue or discussion. - [x] I have created tests covering the changes. - [x] I have updated the documentation and checked the documentation preview. ### ⌛ Dependencies <!-- List all open PRs that this PR logically depends on. For example, --> <!-- - sagemath#12345: short description why this is a dependency --> <!-- - sagemath#34567: ... --> URL: sagemath#39124 Reported by: David Coudert Reviewer(s): Travis Scrimshaw
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We gather all orientation methods to file
src/sage/graphs/orientations.py.This should ease the work of #38758.
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⌛ Dependencies