|
| 1 | +Package Manager API |
| 2 | +---- |
| 3 | + |
| 4 | +.. code-block:: python |
| 5 | +
|
| 6 | + from importlib import import_module |
| 7 | + from importlib.util import find_spec |
| 8 | + from inspect import getmembers, isfunction, isbuiltin, isclass |
| 9 | + from sys import stderr |
| 10 | +
|
| 11 | +
|
| 12 | + class PackageManager(object): |
| 13 | +
|
| 14 | + def __init__(self): |
| 15 | + self.installed_package_dict = { |
| 16 | + } |
| 17 | + self.executor = None |
| 18 | + self.callback_executor = None |
| 19 | +
|
| 20 | + def check_package(self, package: str): |
| 21 | + """ |
| 22 | + :param package: package to check exists or not |
| 23 | + :return: package if find else None |
| 24 | + """ |
| 25 | + if self.installed_package_dict.get(package, None) is None: |
| 26 | + found_spec = find_spec(package) |
| 27 | + if found_spec is not None: |
| 28 | + try: |
| 29 | + installed_package = import_module(found_spec.name) |
| 30 | + self.installed_package_dict.update( |
| 31 | + {found_spec.name: installed_package}) |
| 32 | + except ModuleNotFoundError as error: |
| 33 | + print(repr(error), file=stderr) |
| 34 | + return self.installed_package_dict.get(package, None) |
| 35 | +
|
| 36 | + def add_package_to_executor(self, package): |
| 37 | + """ |
| 38 | + :param package: package's function will add to executor |
| 39 | + """ |
| 40 | + self.add_package_to_target( |
| 41 | + package=package, |
| 42 | + target=self.executor |
| 43 | + ) |
| 44 | +
|
| 45 | + def add_package_to_callback_executor(self, package): |
| 46 | + """ |
| 47 | + :param package: package's function will add to callback_executor |
| 48 | + """ |
| 49 | + self.add_package_to_target( |
| 50 | + package=package, |
| 51 | + target=self.callback_executor |
| 52 | + ) |
| 53 | +
|
| 54 | + def get_member(self, package, predicate, target): |
| 55 | + """ |
| 56 | + :param package: package we want to get member |
| 57 | + :param predicate: predicate |
| 58 | + :param target: which event_dict will be added |
| 59 | + """ |
| 60 | + installed_package = self.check_package(package) |
| 61 | + if installed_package is not None and target is not None: |
| 62 | + for member in getmembers(installed_package, predicate): |
| 63 | + target.event_dict.update( |
| 64 | + {str(package) + "_" + str(member[0]): member[1]}) |
| 65 | + elif installed_package is None: |
| 66 | + print(repr(ModuleNotFoundError(f"Can't find package {package}")), |
| 67 | + file=stderr) |
| 68 | + else: |
| 69 | + print(f"Executor error {self.executor}", file=stderr) |
| 70 | +
|
| 71 | + def add_package_to_target(self, package, target): |
| 72 | + """ |
| 73 | + :param package: package we want to get member |
| 74 | + :param target: which event_dict will be added |
| 75 | + """ |
| 76 | + try: |
| 77 | + self.get_member( |
| 78 | + package=package, |
| 79 | + predicate=isfunction, |
| 80 | + target=target |
| 81 | + ) |
| 82 | + self.get_member( |
| 83 | + package=package, |
| 84 | + predicate=isbuiltin, |
| 85 | + target=target |
| 86 | + ) |
| 87 | + self.get_member( |
| 88 | + package=package, |
| 89 | + predicate=isfunction, |
| 90 | + target=target |
| 91 | + ) |
| 92 | + self.get_member( |
| 93 | + package=package, |
| 94 | + predicate=isclass, |
| 95 | + target=target |
| 96 | + ) |
| 97 | + except Exception as error: |
| 98 | + print(repr(error), file=stderr) |
| 99 | +
|
| 100 | +
|
| 101 | + package_manager = PackageManager() |
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