Return the spec for the specified module. First, sys.modules is checked to see if the module was already imported. If so, then sys.modules[name].__spec__ is returned. If that happens to be set to None, then ValueError is raised. If the module is not in sys.modules, then sys.meta_pat
(name, path=None)
| 36 | |
| 37 | |
| 38 | def _find_spec_from_path(name, path=None): |
| 39 | """Return the spec for the specified module. |
| 40 | |
| 41 | First, sys.modules is checked to see if the module was already imported. If |
| 42 | so, then sys.modules[name].__spec__ is returned. If that happens to be |
| 43 | set to None, then ValueError is raised. If the module is not in |
| 44 | sys.modules, then sys.meta_path is searched for a suitable spec with the |
| 45 | value of 'path' given to the finders. None is returned if no spec could |
| 46 | be found. |
| 47 | |
| 48 | Dotted names do not have their parent packages implicitly imported. You will |
| 49 | most likely need to explicitly import all parent packages in the proper |
| 50 | order for a submodule to get the correct spec. |
| 51 | |
| 52 | """ |
| 53 | if name not in sys.modules: |
| 54 | return _find_spec(name, path) |
| 55 | else: |
| 56 | module = sys.modules[name] |
| 57 | if module is None: |
| 58 | return None |
| 59 | try: |
| 60 | spec = module.__spec__ |
| 61 | except AttributeError: |
| 62 | raise ValueError(f'{name}.__spec__ is not set') from None |
| 63 | else: |
| 64 | if spec is None: |
| 65 | raise ValueError(f'{name}.__spec__ is None') |
| 66 | return spec |
| 67 | |
| 68 | |
| 69 | def find_spec(name, package=None): |
nothing calls this directly
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