[mypy] fix small folders (#4292)

* add final else-statement

* fix file_transfer

* fix quantum folder

* fix divide_and_conquer-folder

* Update build.yml

* updating DIRECTORY.md

* Update ripple_adder_classic.py

* Update .github/workflows/build.yml

* removed imports from typing

* removed conversion to string

* Revert "removed conversion to string"

This reverts commit 2f7c4731d1.

* implemented suggested changes

* Update receive_file.py

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>

.github/workflows/build.yml

@@ -30,13 +30,18 @@ jobs:
            cellular_automata
            compression
            computer_vision
+           divide_and_conquer
+           electronics
+           file_transfer
            fractals
            fuzzy_logic
            genetic_algorithm
            geodesy
            knapsack
            networking_flow
-           scheduling sorts
+           quantum
+           scheduling
+           sorts
       - name: Run tests
         run: pytest --doctest-modules --ignore=project_euler/ --ignore=scripts/ --cov-report=term-missing:skip-covered --cov=. .
       - if: ${{ success() }}

divide_and_conquer/max_difference_pair.py

@@ -1,7 +1,4 @@
-from typing import List
-
-
-def max_difference(a: List[int]) -> (int, int):
+def max_difference(a: list[int]) -> tuple[int, int]:
     """
     We are given an array A[1..n] of integers, n >= 1. We want to
     find a pair of indices (i, j) such that

divide_and_conquer/strassen_matrix_multiplication.py

@@ -121,7 +121,7 @@ def strassen(matrix1: list, matrix2: list) -> list:
     dimension2 = matrix_dimensions(matrix2)
 
     if dimension1[0] == dimension1[1] and dimension2[0] == dimension2[1]:
-        return matrix1, matrix2
+        return [matrix1, matrix2]
 
     maximum = max(max(dimension1), max(dimension2))
     maxim = int(math.pow(2, math.ceil(math.log2(maximum))))

electronics/electric_power.py

@@ -42,6 +42,8 @@ def electric_power(voltage: float, current: float, power: float) -> Tuple:
         return result("current", power / voltage)
     elif power == 0:
         return result("power", float(round(abs(voltage * current), 2)))
+    else:
+        raise ValueError("Exactly one argument must be 0")
 
 
 if __name__ == "__main__":

electronics/ohms_law.py

@@ -32,6 +32,8 @@ def ohms_law(voltage: float, current: float, resistance: float) -> Dict[str, flo
         return {"current": voltage / resistance}
     elif resistance == 0:
         return {"resistance": voltage / current}
+    else:
+        raise ValueError("Exactly one argument must be 0")
 
 
 if __name__ == "__main__":

file_transfer/receive_file.py

@@ -13,7 +13,7 @@ if __name__ == "__main__":
         print("Receiving data...")
         while True:
             data = sock.recv(1024)
-            print(f"data={data}")
+            print(f"{data = }")
             if not data:
                 break
             out_file.write(data)  # Write data to a file

file_transfer/send_file.py

@@ -13,7 +13,7 @@ def send_file(filename: str = "mytext.txt", testing: bool = False) -> None:
         conn, addr = sock.accept()  # Establish connection with client.
         print(f"Got connection from {addr}")
         data = conn.recv(1024)
-        print(f"Server received {data}")
+        print(f"Server received: {data = }")
 
         with open(filename, "rb") as in_file:
             data = in_file.read(1024)

quantum/ripple_adder_classic.py

@@ -6,7 +6,7 @@ from qiskit import Aer, QuantumCircuit, execute
 from qiskit.providers import BaseBackend
 
 
-def store_two_classics(val1: int, val2: int) -> (QuantumCircuit, str, str):
+def store_two_classics(val1: int, val2: int) -> tuple[QuantumCircuit, str, str]:
     """
     Generates a Quantum Circuit which stores two classical integers
     Returns the circuit and binary representation of the integers