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35 lines
894 B
Python
35 lines
894 B
Python
"""
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目录监控公开门面，具体对象按需解析。
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"""
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from importlib import import_module
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from typing import Any
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_EXPORT_MODULES = {
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"DirectoryChangeEvent": "app.monitor.watcher",
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"LocalDirectoryWatcher": "app.monitor.watcher",
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"Monitor": "app.monitor.monitor",
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}
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def __getattr__(name: str) -> Any:
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"""
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首次访问公开监控对象时只加载其所属实现模块。
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"""
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module_name = _EXPORT_MODULES.get(name)
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if module_name is None:
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raise AttributeError(f"module 'app.monitor' has no attribute {name!r}")
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value = getattr(import_module(module_name), name)
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globals()[name] = value
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return value
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def __dir__() -> list[str]:
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"""
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让惰性公开对象继续支持交互式发现。
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"""
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return sorted(set(globals()) | set(_EXPORT_MODULES))
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__all__ = ["DirectoryChangeEvent", "LocalDirectoryWatcher", "Monitor"]
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