The Start of Matrix Mania

.gitignore

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+.venv/
+__pycache__/
+.env

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/MatrixMania.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.venv" />
+    </content>
+    <orderEntry type="jdk" jdkName="Python 3.14 (MatrixMania)" jdkType="Python SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPep8Inspection" enabled="true" level="INFORMATION" enabled_by_default="true">
+      <option name="ignoredErrors">
+        <list>
+          <option value="W292" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/inspectionProfiles/profiles_settings.xml

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+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Black">
+    <option name="sdkName" value="Python 3.14 (MatrixMania)" />
+  </component>
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.14 (MatrixMania)" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/MatrixMania.iml" filepath="$PROJECT_DIR$/.idea/MatrixMania.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

AGENTS.md

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+# Regeln für dieses Projekt
+- Code nach PEP 8, Zeilenlänge maximal 88 Zeichen.
+- Jede Funktion und Methode hat einen Docstring und Type Hints.
+- Vor jedem Commit: `ruff check` und `ruff format`.

compute.py

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+import math
+
+def matmul(matrix_a:list[list[float]], matrix_b: list[list[float]]) -> list[list[float]]:
+    """
+    Add two numbers together.
+    :param matrix_a: The first Matrix
+    :type matrix_a: list[list[float]]
+    :param matrix_b: The second Matrix
+    :type matrix_b: list[list[float]]
+    :return: The Matrix Multiplication of matrix_a and matrix_b
+    :rtype: list[list[float]]
+    """
+    try:
+        if len(matrix_a[0]) != len(matrix_b):
+            raise ValueError("Differing Matrix Size")
+        target_height = len(matrix_a)
+        target_width = len(matrix_b[0])
+
+        end_matrix : list[list[float]]= []
+
+
+        for height in range(target_height):
+            end_matrix.append([])
+            for width in range(target_width):
+                row = matrix_a[height]
+                column_ = []
+                for b in matrix_b:
+                    column_.append(b[width])
+                result_quarter = 0
+                for i in range(len(row)):
+                    result_quarter += row[i] * column_[i]
+                end_matrix[height].append(float(result_quarter))
+
+        return end_matrix
+    except ValueError:
+        print("An Error has occurred")
+    except IndexError:
+        print("Tried to call non-existing Index")
+    except TypeError:
+        print("Tried to insert not a Number")
+
+
+
+def transpose(matrix:list[list[float]]) -> list[list[float]]:
+    """
+    Transposes a matrix.
+    :param matrix: The Matrix, that will be transposed
+    :type matrix: list[list[float]]
+    :return: The transposed matrix
+    :rtype: list[list[float]]
+    """
+
+    transposed_matrix = []
+    for x in range(len(matrix[0])):
+        column = []
+        for b in matrix:
+            column.append(b[x])
+        transposed_matrix.append(column)
+
+    return transposed_matrix
+
+def rot_2d(angle:float) -> list[list[float]]:
+    """
+    Creates a Rotation Matrix out of the given angle
+    :param angle: The rotation in radians
+    :type angle: float
+    :return: The Rotation Matrix
+    :rtype: list[list[float]]
+    """
+    sin = round(math.sin(angle), 4)
+    cos = round(math.cos(angle), 4)
+    return [[cos, -sin],
+            [sin, cos]]
+
+
+
+
+def print_matrix(matrix:list[list[float]]) -> None:
+    for row in matrix:
+        print(row)
+
+if __name__ == "__main__":
+    matrix_bsp_a = [[1, 2, 3], [4, 5, 6]]
+    matrix_bsp_b = [[1, 2], [3, 4], [5, 6]]
+    matrix_bsp_c = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
+    matrix_bsp_d = [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
+
+    if False:
+        matrix_bsp_result = matmul(matrix_bsp_c, matrix_bsp_d)
+        print_matrix(matrix_bsp_result)
+
+    if False:
+        matrix_bsp_result = transpose(matrix_bsp_d)
+        #print_matrix(matrix_bsp_c)
+        print_matrix(matrix_bsp_result)
+
+    if True:
+        print_matrix(rot_2d(math.pi*.25))
+
+    print("Done")

pyproject.toml

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+[project]
+name = "matrixmania"
+version = "0.1.0"