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.coveragerc

@@ -0,0 +1,35 @@
+# .coveragerc to control coverage.py
+[run]
+branch = True
+omit =
+    __main__.py
+
+[report]
+# Regexes for lines to exclude from consideration
+exclude_lines =
+    # Have to re-enable the standard pragma
+    pragma: no cover
+
+    # Don't complain about missing debug-only code:
+    def __repr__
+
+    # Don't complain if tests don't hit defensive assertion code:
+    raise AssertionError
+    raise NotImplementedError
+
+    # Don't complain if non-runnable code isn't run:
+    if 0:
+    if __name__ == .__main__.:
+
+    # Don't complain about abstract methods, they aren't run:
+    @(abc\.)?abstractmethod
+
+    # Don't complain aboud typing hint
+    class (\w+)\(Protocol\):
+    @(typing\.)?overload
+
+    # Don't complain about deprecated code
+    @(typing(_extensions)?\.)?deprecated(.*)
+
+
+ignore_errors = True

.gitignore

@@ -0,0 +1,162 @@
+# ---> Python
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+

LICENSE

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) 2024 SoftwareLab
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Makefile

@@ -0,0 +1,24 @@
+.PHONY: run refresh test lint coverage clean
+
+MODULE := lab1.py
+
+all: clean test lint
+refresh: clean test lint
+
+run:
+	python ${MODULE}
+
+lint:
+	flake8 ${MODULE} tests/ --exclude __init__.py --count --max-line-length=127 --extend-ignore=W293,E402
+
+test:
+	pytest
+
+coverage:
+	coverage run --source $(basename ${MODULE}) --parallel-mode -m pytest
+	coverage combine
+	coverage html -i
+
+clean:
+	rm -rf build
+	rm -rf dist

lab1.py

@@ -7,7 +7,7 @@ from random import choice
 from tkinter import ttk
 from tkinter.filedialog import askopenfile
 from tkinter.messagebox import showerror, showinfo
-from typing import Dict, Generator, List, Optional, cast
+from typing import IO, Dict, Generator, List, Optional, cast
 
 import matplotlib.pyplot as plt
 import networkx as nx
@@ -165,7 +165,7 @@ class SideFrame(tk.Frame):
 
 class MainWindow(ttk.Frame):
     def setup(self) -> None:
-        self.load_button = ttk.Button(self, text="Load", command=self.load_file)
+        self.load_button = ttk.Button(self, text="Load", command=self._load_callback)
         self.load_button.pack(side=tk.LEFT, padx=(250, 250), pady=(250, 250))
         self.graph = nx.DiGraph()
         self.graph_layout = {}
@@ -173,9 +173,29 @@ class MainWindow(ttk.Frame):
         self.side_menu.setup()
         self.side_menu.pack(side=tk.RIGHT, fill=tk.Y)
 
+    def load_file(self, file: IO[bytes], *, encoding: str = "utf-8") -> None:
+        """load text from file
+
+        :param file: file to load
+        :type file: IO
+        """
+        text: str = file.read().decode(encoding=encoding)
+        last = None
+        for t in re.split(r"[^A-Za-z]+", text.lower()):
+            if not t:
+                continue
+            self.graph.add_node(t)
+            if last is not None:
+                if (last, t) not in self.graph.edges:
+                    self.graph.add_edge(last, t, weight=1)
+                else:
+                    self.graph.edges[last, t]["weight"] += 1
+            last = t
+    
     def show_directed_graph(self) -> None:
+        """show directed graph in matplotlib"""
         f = plt.figure(figsize=(7, 7))
-        pos = nx.spring_layout(self.graph, iterations=256)
+        pos = nx.spring_layout(self.graph)
         nx.draw(self.graph, with_labels=True, pos=pos)
         labels = nx.get_edge_attributes(self.graph, 'weight')
         nx.draw_networkx_edge_labels(self.graph, pos, edge_labels=labels)
@@ -202,8 +222,8 @@ class MainWindow(ttk.Frame):
         paths = all_simple_paths_graph(self.graph, word1, word2)
         words = set()
         for path in paths:
-            if len(path) == 3:
-                print(path)
+            if len(path) != 3:
+                continue
             words.update(path[1:-1])
         return " ".join(words)
 
@@ -269,7 +289,7 @@ class MainWindow(ttk.Frame):
         while prev := previous_nodes[current_node]:
             path.insert(0, current_node)
             current_node = prev
-        if path:
+        # if path:
         path.insert(0, current_node)
 
         if isinf(distances[word2]):
@@ -308,7 +328,7 @@ class MainWindow(ttk.Frame):
         nx.draw_networkx_edge_labels(self.graph, pos, edge_labels=nx.get_edge_attributes(self.graph, 'weight'))
         self.graph_canvas.draw()
 
-    def load_file(self) -> None:
+    def _load_callback(self) -> None:
         file = askopenfile(
             "rb",
             defaultextension=".txt",
@@ -319,18 +339,7 @@ class MainWindow(ttk.Frame):
         if file is None:
             return
         with file:
-            text: str = file.read().decode()
-        last = None
-        for t in re.split(r"[^A-Za-z]+", text.lower()):
-            if not t:
-                continue
-            self.graph.add_node(t)
-            if last is not None:
-                if (last, t) not in self.graph.edges:
-                    self.graph.add_edge(last, t, weight=1)
-                else:
-                    self.graph.edges[last, t]["weight"] += 1
-            last = t
+            self.load_file(file)
         self.side_menu.activate()
         self.show_directed_graph()