Update paths and actually add files

.gitignore

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+# 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
+
+# UV
+#   Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#uv.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/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# 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/
+
+# Ruff stuff:
+.ruff_cache/
+
+# PyPI configuration file
+.pypirc
+
+.DS_Store

shared/notes-and-examples/2026.01.21/main.py

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+def bubble_sort_example():
+    numbers = [5, 24, 18, 95, 45, 502, 1]
+
+    for i in range(len(numbers)):
+        for j in range(i, len(numbers)):
+            if numbers[i] > numbers[j]:
+                numbers[j], numbers[i] = numbers[i], numbers[j]
+
+
+    print(numbers)
+
+def insertion_sort_example():
+    numbers = [5, 24, 18, 95, 502, 45, 1]
+
+    for i in range(1, len(numbers)):
+        for j in range(i - 1, -1, -1):
+            if numbers[j] > numbers[j + 1]:
+                numbers[j + 1], numbers[j] = numbers[j], numbers[j + 1]
+            else:
+                break
+
+    print(numbers)
+
+# bubble_sort_example();
+insertion_sort_example();

shared/notes-and-examples/2026.01.28/full_linked_list.py

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+class Node:
+    next_node = None
+
+    def __init__(self, value):
+        self.value = value
+
+# Homework:
+# Make a linked list class with the functions:
+# - append(node): add a node to the end of the list
+# - insert(node, index): add a node to the middle of the list
+# - remove(index): remove the first matching node from the list
+
+class LinkedList:
+    head = None
+    tail = None
+
+def append(Llist, thing):
+    if Llist.head==None:
+        Llist.head=Node(value=thing)
+        Llist.tail=Llist.head
+        return
+    Llist.tail.nextNode=Node(value=thing)
+    Llist.tail=Llist.tail.nextNode
+
+
+list1=LinkedList()
+append(list1, 'hi')
+append(list1, 'hi again')
+append(list1, 'why am I saying hi so many times?')
+print(list1.head.value)
+print(list1.head.nextNode.value)
+print(list1.head.nextNode.nextNode.value)
+
+
+

shared/notes-and-examples/2026.01.28/main.py

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+some_numbers = [2, 5, 20, 18, 4]
+
+more_numbers = some_numbers.copy()
+
+some_numbers[2] = 100
+
+# print(more_numbers[2])  # prints 100?
+
+class Sample:
+    other_samples = []
+    value = 0
+
+samples = [Sample(), Sample(), Sample()]
+more_samples = samples.copy()  # shallow copy
+samples[1].value = 10
+samples[1].other_samples.append(samples[0])
+# print(more_samples[1].value)  # 10
+
+samples.append(Sample())
+samples[3].value = 100
+# print(more_samples[3].value)
+
+other_sample.value = 40
+# print(sample.value)
+
+class Dog:
+    def __init__(self, age, name):
+        self.age = age
+        self.name = name
+
+# dog_1 = Dog()
+
+class Node:
+    next_node = None
+
+    def __init__(self, value):
+        self.value = value
+    
+node_1 = Node(0)
+node_2 = Node(0)
+
+node_2.value = 10
+
+node_1.next_node = node_2
+
+node_2.value = 20
+
+current_node = node_1
+while (current_node != None):
+    print(current_node.value)
+    current_node = current_node.next_node

shared/notes-and-examples/2026.01.28/object_reference_sample.py

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+class Sample:
+    other_samples = []
+    value = 0
+
+sample = Sample()
+other_sample = sample
+sample.value = 20
+print(other_sample.value)

shared/notes-and-examples/2026.02.04/main.py

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+class Node:
+    next = None
+    previous = None
+
+class Queue:
+    front = None
+    tail = None
+
+    def enqueue(self, node: Node):
+        pass
+
+    def dequeue(self):
+        pass