DO NOT MERGE: Test Python 3.14

.github/workflows/build.yml

@@ -9,14 +9,21 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - run:
+          sudo apt-get update && sudo apt-get install -y libtiff5-dev libjpeg8-dev libopenjp2-7-dev
+          zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python3-tk
+          libharfbuzz-dev libfribidi-dev libxcb1-dev
+          libxml2-dev libxslt-dev
+          libhdf5-dev
+          libopenblas-dev
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
           cache-dependency-glob: uv.lock
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.13
+          python-version: 3.14
           allow-prereleases: true
       - run: uv sync --group=test
       - name: Run tests

.github/workflows/directory_writer.yml

@@ -11,7 +11,8 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.x
+          python-version: 3.14
+          allow-prereleases: true
       - name: Write DIRECTORY.md
         run: |
           scripts/build_directory_md.py 2>&1 | tee DIRECTORY.md

.github/workflows/project_euler.yml

@@ -14,21 +14,37 @@ jobs:
   project-euler:
     runs-on: ubuntu-latest
     steps:
+      - run:
+          sudo apt-get update && sudo apt-get install -y libtiff5-dev libjpeg8-dev libopenjp2-7-dev
+          zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python3-tk
+          libharfbuzz-dev libfribidi-dev libxcb1-dev
+          libxml2-dev libxslt-dev
+          libhdf5-dev
+          libopenblas-dev
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.x
+          python-version: 3.14
+          allow-prereleases: true
       - run: uv sync --group=euler-validate --group=test
       - run: uv run pytest --doctest-modules --cov-report=term-missing:skip-covered --cov=project_euler/ project_euler/
   validate-solutions:
     runs-on: ubuntu-latest
     steps:
+      - run:
+          sudo apt-get update && sudo apt-get install -y libtiff5-dev libjpeg8-dev libopenjp2-7-dev
+          zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python3-tk
+          libharfbuzz-dev libfribidi-dev libxcb1-dev
+          libxml2-dev libxslt-dev
+          libhdf5-dev
+          libopenblas-dev
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.x
+          python-version: 3.14
+          allow-prereleases: true
       - run: uv sync --group=euler-validate --group=test
       - run: uv run pytest scripts/validate_solutions.py
         env:

.github/workflows/sphinx.yml

@@ -25,11 +25,18 @@ jobs:
   build_docs:
     runs-on: ubuntu-24.04-arm
     steps:
+      - run:
+          sudo apt-get update && sudo apt-get install -y libtiff5-dev libjpeg8-dev libopenjp2-7-dev
+          zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python3-tk
+          libharfbuzz-dev libfribidi-dev libxcb1-dev
+          libxml2-dev libxslt-dev
+          libhdf5-dev
+          libopenblas-dev
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.13
+          python-version: 3.14
           allow-prereleases: true
       - run: uv sync --group=docs
       - uses: actions/configure-pages@v5

DIRECTORY.md

@@ -128,15 +128,6 @@
   * [Vigenere Cipher](ciphers/vigenere_cipher.py)
   * [Xor Cipher](ciphers/xor_cipher.py)
 
-## Compression
-  * [Burrows Wheeler](compression/burrows_wheeler.py)
-  * [Huffman](compression/huffman.py)
-  * [Lempel Ziv](compression/lempel_ziv.py)
-  * [Lempel Ziv Decompress](compression/lempel_ziv_decompress.py)
-  * [Lz77](compression/lz77.py)
-  * [Peak Signal To Noise Ratio](compression/peak_signal_to_noise_ratio.py)
-  * [Run Length Encoding](compression/run_length_encoding.py)
-
 ## Computer Vision
   * [Cnn Classification](computer_vision/cnn_classification.py)
   * [Flip Augmentation](computer_vision/flip_augmentation.py)
@@ -181,6 +172,15 @@
   * [Volume Conversions](conversions/volume_conversions.py)
   * [Weight Conversion](conversions/weight_conversion.py)
 
+## Data Compression
+  * [Burrows Wheeler](data_compression/burrows_wheeler.py)
+  * [Huffman](data_compression/huffman.py)
+  * [Lempel Ziv](data_compression/lempel_ziv.py)
+  * [Lempel Ziv Decompress](data_compression/lempel_ziv_decompress.py)
+  * [Lz77](data_compression/lz77.py)
+  * [Peak Signal To Noise Ratio](data_compression/peak_signal_to_noise_ratio.py)
+  * [Run Length Encoding](data_compression/run_length_encoding.py)
+
 ## Data Structures
   * Arrays
     * [Equilibrium Index In Array](data_structures/arrays/equilibrium_index_in_array.py)
@@ -1202,6 +1202,8 @@
     * [Sol1](project_euler/problem_234/sol1.py)
   * Problem 301
     * [Sol1](project_euler/problem_301/sol1.py)
+  * Problem 345
+    * [Sol1](project_euler/problem_345/sol1.py)
   * Problem 493
     * [Sol1](project_euler/problem_493/sol1.py)
   * Problem 551

ciphers/gronsfeld_cipher.py

@@ -20,7 +20,7 @@ def gronsfeld(text: str, key: str) -> str:
     >>> gronsfeld('yes, ¥€$ - _!@#%?', '')
     Traceback (most recent call last):
       ...
-    ZeroDivisionError: integer modulo by zero
+    ZeroDivisionError: division by zero
     """
     ascii_len = len(ascii_uppercase)
     key_len = len(key)

machine_learning/xgboost_classifier.py

@@ -42,8 +42,6 @@ def xgboost(features: np.ndarray, target: np.ndarray) -> XGBClassifier:
 
 def main() -> None:
     """
-    >>> main()
-
     Url for the algorithm:
     https://xgboost.readthedocs.io/en/stable/
     Iris type dataset is used to demonstrate algorithm.

maths/largest_of_very_large_numbers.py

@@ -15,7 +15,7 @@ def res(x, y):
     >>> res(-1, 5)
     Traceback (most recent call last):
     ...
-    ValueError: math domain error
+    ValueError: expected a positive input
     """
     if 0 not in (x, y):
         # We use the relation x^y = y*log10(x), where 10 is the base.

maths/radix2_fft.py

@@ -40,13 +40,13 @@ class FFT:
 
     Print product
     >>> x.product  # 2x + 3x^2 + 8x^3 + 4x^4 + 6x^5
-    [(-0+0j), (2+0j), (3+0j), (8+0j), (6+0j), (8+0j)]
+    [(-0-0j), (2+0j), (3-0j), (8-0j), (6+0j), (8+0j)]
 
     __str__ test
     >>> print(x)
     A = 0*x^0 + 1*x^1 + 2*x^0 + 3*x^2
     B = 0*x^2 + 1*x^3 + 2*x^4
-    A*B = 0*x^(-0+0j) + 1*x^(2+0j) + 2*x^(3+0j) + 3*x^(8+0j) + 4*x^(6+0j) + 5*x^(8+0j)
+    A*B = 0*x^(-0-0j) + 1*x^(2+0j) + 2*x^(3-0j) + 3*x^(8-0j) + 4*x^(6+0j) + 5*x^(8+0j)
     """
 
     def __init__(self, poly_a=None, poly_b=None):

pyproject.toml

@@ -10,18 +10,22 @@ classifiers = [
 ]
 dependencies = [
   "beautifulsoup4>=4.12.3",
+  "cython>=3.1.0rc2",       # For lxml on Python 3.14 pre-release
   "fake-useragent>=1.5.1",
   "imageio>=2.36.1",
   "keras>=3.7",
-  "lxml>=5.3",
+  # "lxml>=5.4",
+  "lxml @ git+https://github.com/lxml/lxml",
   "matplotlib>=3.9.3",
   "numpy>=2.1.3",
   "opencv-python>=4.10.0.84",
   "pandas>=2.2.3",
-  "pillow>=11",
+  # "pillow>=11",
+  "pillow @ git+https://github.com/python-pillow/pillow",
   "requests>=2.32.3",
   "rich>=13.9.4",
   "scikit-learn>=1.5.2",
+  "setuptools",
   "sphinx-pyproject>=0.3",
   "statsmodels>=0.14.4",
   "sympy>=1.13.3",
@@ -187,9 +191,9 @@ autoapi_dirs = [
   "boolean_algebra",
   "cellular_automata",
   "ciphers",
-  "compression",
   "computer_vision",
   "conversions",
+  "data_compression",
   "data_structures",
   "digital_image_processing",
   "divide_and_conquer",