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path: root/Lib/importlib/test/source/test_finder.py
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* Make importlib.abc.SourceLoader the primary mechanism for importlib.Brett Cannon2010-07-031-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This required moving the class from importlib/abc.py into importlib/_bootstrap.py and jiggering some code to work better with the class. This included changing how the file finder worked to better meet import semantics. This also led to fixing importlib to handle the empty string from sys.path as import currently does (and making me wish we didn't support that instead just required people to insert '.' instead to represent cwd). It also required making the new set_data abstractmethod create any needed subdirectories implicitly thanks to __pycache__ (it was either this or grow the SourceLoader ABC to gain an 'exists' method and either a mkdir method or have set_data with no data arg mean to create a directory). Lastly, as an optimization the file loaders cache the file path where the finder found something to use for loading (this is thanks to having a sourceless loader separate from the source loader to simplify the code and cut out stat calls). Unfortunately test_runpy assumed a loader would always work for a module, even if you changed from underneath it what it was expected to work with. By simply dropping the previous loader in test_runpy so the proper loader can be returned by the finder fixed the failure. At this point importlib deviates from import on two points: 1. The exception raised when trying to import a file is different (import does an explicit file check to print a special message, importlib just says the path cannot be imported as if it was just some module name). 2. the co_filename on a code object is not being set to where bytecode was actually loaded from instead of where the marshalled code object originally came from (a solution for this has already been agreed upon on python-dev but has not been implemented yet; issue8611).
* Make importlib.abc.SourceLoader the primary mechanism for importlib.Brett Cannon2010-07-031-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This required moving the class from importlib/abc.py into importlib/_bootstrap.py and jiggering some code to work better with the class. This included changing how the file finder worked to better meet import semantics. This also led to fixing importlib to handle the empty string from sys.path as import currently does (and making me wish we didn't support that instead just required people to insert '.' instead to represent cwd). It also required making the new set_data abstractmethod create any needed subdirectories implicitly thanks to __pycache__ (it was either this or grow the SourceLoader ABC to gain an 'exists' method and either a mkdir method or have set_data with no data arg mean to create a directory). Lastly, as an optimization the file loaders cache the file path where the finder found something to use for loading (this is thanks to having a sourceless loader separate from the source loader to simplify the code and cut out stat calls). Unfortunately test_runpy assumed a loader would always work for a module, even if you changed from underneath it what it was expected to work with. By simply dropping the previous loader in test_runpy so the proper loader can be returned by the finder fixed the failure. At this point importlib deviates from import on two points: 1. The exception raised when trying to import a file is different (import does an explicit file check to print a special message, importlib just says the path cannot be imported as if it was just some module name). 2. the co_filename on a code object is not being set to where bytecode was actually loaded from instead of where the marshalled code object originally came from (a solution for this has already been agreed upon on python-dev but has not been implemented yet; issue8611).
* PEP 3147Barry Warsaw2010-04-171-1/+12
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* Move over to using assertRaises as a context manager for importlib tests.Brett Cannon2009-08-271-4/+4
| | | | | Obviously one shouldn't do whole sale conversions like this, but I was already going through the test code and I was bored at the airport.
* convert old fail* assertions to assert*Benjamin Peterson2009-06-301-5/+5
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* Finish properly hiding importlib implementation code.Brett Cannon2009-03-121-2/+2
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* Separate out finder for source and source/bytecode.Brett Cannon2009-02-211-1/+1
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* Do some cleanup in importlib:Brett Cannon2009-02-211-1/+1
| | | | | | | + Ditch using arguments to super(). + Ditch subclassing from object directly. + Move directory check out of chaining path hook to file path hook/finder. + Rename some classes to better reflect they are finders, not importers.
* Rename importlib.test.support to importlib.test.util.Brett Cannon2009-02-011-1/+0
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* Split out support code that is specific to source tests out ofBrett Cannon2009-02-011-5/+6
| | | | importlib.test.support to importlib.test.source.util.
* Merge testing ABCs for importlib into importlib.test.abc.Brett Cannon2009-01-301-2/+2
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* Add initial implementation of importlib. See the NOTES files for what isBrett Cannon2009-01-181-0/+130
planned for the package. There are no docs yet, but they are coming once the API for the first new function, importlib.import_module() is finalized.