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Домашнее задание 10. Обход в глубину. Разгуляева А.И. #9
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| # ruff.toml | ||
| target-version = "py311" | ||
| line-length = 100 | ||
|
|
||
| # включить все основные правила | ||
| select = [ | ||
| "E", # pycodestyle errors | ||
| "W", # pycodestyle warnings | ||
| "F", # Pyflakes | ||
| "I", # isort | ||
| "N", # pep8-naming | ||
| "UP", # pyupgrade | ||
| "YTT", # flake8-2020 | ||
| "S", # flake8-bandit | ||
| "A", # flake8-builtins | ||
| "COM", # flake8-commas | ||
| "C4", # flake8-comprehensions | ||
| "DTZ", # flake8-datetimez | ||
| "T10", # flake8-debugger | ||
| "EM", # flake8-errmsg | ||
| "EXE", # flake8-executable | ||
| "ISC", # flake8-implicit-str-concat | ||
| "ICN", # flake8-import-conventions | ||
| "G", # flake8-logging-format | ||
| "INP", # flake8-no-pep420 | ||
| "PIE", # flake8-pie | ||
| "T20", # flake8-print | ||
| "PYI", # flake8-pyi | ||
| "PT", # flake8-pytest-style | ||
| "Q", # flake8-quotes | ||
| "RSE", # flake8-raise | ||
| "RET", # flake8-return | ||
| "SLF", # flake8-self | ||
| "SIM", # flake8-simplify | ||
| "TID", # flake8-tidy-imports | ||
| "TCH", # flake8-type-checking | ||
| "INT", # flake8-gettext | ||
| "ARG", # flake8-unused-arguments | ||
| "FBT", # flake8-boolean-trap | ||
| "B", # flake8-bugbear | ||
| "AIR", # flake8-airflow | ||
| "PERF", # flake8-perflint | ||
| ] | ||
|
|
||
| # игнорировать правила | ||
| ignore = [ | ||
| "E501", # line too long - handled by formatter | ||
| "S101", # assert used - ok in tests | ||
| "T201", # print found - sometimes needed | ||
| "COM812", # trailing comma missing - not always required | ||
| ] | ||
|
|
||
| # настройки для конкретных файлов | ||
| [per-file-ignores] | ||
| "__init__.py" = ["F401"] # Unused imports allowed in __init__.py | ||
| "tests/**" = ["S101", "SLF001"] # Allow assert and self in tests | ||
| "**/migrations/**" = ["ALL"] # Ignore all in migrations | ||
|
|
||
| # настройки форматтера | ||
| [format] | ||
| indent-style = "space" | ||
| quote-style = "double" | ||
| skip-magic-trailing-comma = false | ||
| line-ending = "auto" | ||
|
|
||
| # настройки для конкретных правил | ||
| [flake8-quotes] | ||
| docstring-quotes = "double" | ||
| inline-quotes = "double" | ||
|
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||
| [flake8-tidy-imports] | ||
| ban-relative-imports = "all" | ||
|
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||
| [isort] | ||
| known-first-party = ["myapp"] | ||
| lines-after-imports = 2 | ||
| combine-as-imports = true | ||
| split-on-trailing-comma = true |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| class Graph: | ||
|
|
||
| # МЕТОДЫ СОЗДАНИЯ ГРАФА | ||
|
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||
| def __init__(self): | ||
| """Инициализация неориентированного графа""" | ||
| self.connections_list = {} | ||
|
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||
| def add_vertex(self, vertex): | ||
| """Добавление вершины в граф""" | ||
| if vertex not in self.connections_list: | ||
| self.connections_list[vertex] = [] | ||
|
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||
| def add_edge(self, vertex1, vertex2): | ||
| """Добавление ребра""" | ||
| # добавляем вершины, если их нет | ||
| self.add_vertex(vertex1) | ||
| self.add_vertex(vertex2) | ||
|
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||
| # добавляем связи в обе стороны | ||
| if vertex2 not in self.connections_list[vertex1]: | ||
| self.connections_list[vertex1].append(vertex2) | ||
| if vertex1 not in self.connections_list[vertex2]: | ||
| self.connections_list[vertex2].append(vertex1) | ||
|
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||
| # РЕАЛИЗАЦИЯ ПРОТОКОЛОВ ИНТЕРФЕЙСОВ | ||
|
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| def __iter__(self): | ||
| """Делает граф итерируемым""" | ||
| self._dfs_order = self.dfs() | ||
| self._index = 0 | ||
| return self | ||
|
|
||
| def __next__(self): | ||
| """Возвращает следующую вершину при итерации""" | ||
| if self._index < len(self._dfs_order): | ||
| vertex = self._dfs_order[self._index] | ||
| self._index += 1 | ||
| return vertex | ||
| raise StopIteration | ||
|
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||
| def __str__(self): | ||
| """Строковое представление""" | ||
| result = [] | ||
| for vertex, neighbors in self.connections_list.items(): | ||
| result.append(f"{vertex}: {neighbors}") | ||
| return "\n".join(result) | ||
|
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| def __contains__(self, vertex): | ||
| """Проверка наличия вершины""" | ||
| return vertex in self.connections_list | ||
|
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||
| # ДОПОЛНИТЕЛЬНЫЕ МЕТОДЫ ДЛЯ РАБОТЫ С ГРАФОМ | ||
|
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| def get_vertices(self): | ||
| """Возвращает список всех вершин""" | ||
| return list(self.connections_list.keys()) | ||
|
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| def get_edges(self): | ||
| """Возвращает список всех рёбер""" | ||
| edges = set() | ||
| for vertex, neighbors in self.connections_list.items(): | ||
| for neighbor in neighbors: | ||
| edge = tuple(sorted((vertex, neighbor))) | ||
| edges.add(edge) | ||
|
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| return list(edges) | ||
|
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| # ОСНОВНОЕ ЗАДАНИЕ | ||
|
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| def dfs(self, start_vertex=None): | ||
| """ | ||
| Обход графа в глубину | Depth-first search | DFS | ||
| """ | ||
| if not self.connections_list: | ||
| return [] | ||
|
|
||
| # если none, берём 1-ую вершину из словаря | ||
| if start_vertex is None: | ||
| start_vertex = next(iter(self.connections_list)) | ||
|
|
||
| # проверяем существование начальной вершины | ||
| if start_vertex not in self.connections_list: | ||
| raise ValueError(f"Вершина {start_vertex} не существует в графе") | ||
|
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||
| visited = [] # посещённые вершины | ||
| stack = [start_vertex] # вершины, которые необходимо обработать | ||
|
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| while stack: | ||
| vertex = stack.pop() | ||
| if vertex not in visited: | ||
| visited.append(vertex) | ||
| # добавляем в обратном порядке для сохранения естественного порядка | ||
| for neighbor in reversed(self.connections_list[vertex]): | ||
|
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Зачем? Зачем эти лишние операции? И что такое естественный порядок? |
||
| if neighbor not in visited: | ||
| stack.append(neighbor) | ||
|
|
||
| return visited | ||
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ну такое постыдились бы оставлять, явно же LLM