Improve code on f-strings and brevity (#6126)

* Update strassen_matrix_multiplication.py

* Update matrix_operation.py

* Update enigma_machine2.py

* Update enigma_machine.py

* Update enigma_machine2.py

* Update rod_cutting.py

* Update external_sort.py

* Update sol1.py

* Update hill_cipher.py

* Update prime_numbers.py

* Update integration_by_simpson_approx.py

ciphers/enigma_machine2.py

@@ -94,15 +94,15 @@ def _validator(
     rotorpos1, rotorpos2, rotorpos3 = rotpos
     if not 0 < rotorpos1 <= len(abc):
         raise ValueError(
-            f"First rotor position is not within range of 1..26 (" f"{rotorpos1}"
+            "First rotor position is not within range of 1..26 (" f"{rotorpos1}"
         )
     if not 0 < rotorpos2 <= len(abc):
         raise ValueError(
-            f"Second rotor position is not within range of 1..26 (" f"{rotorpos2})"
+            "Second rotor position is not within range of 1..26 (" f"{rotorpos2})"
         )
     if not 0 < rotorpos3 <= len(abc):
         raise ValueError(
-            f"Third rotor position is not within range of 1..26 (" f"{rotorpos3})"
+            "Third rotor position is not within range of 1..26 (" f"{rotorpos3})"
         )
 
     # Validates string and returns dict

ciphers/hill_cipher.py

@@ -62,7 +62,7 @@ class HillCipher:
     # take x and return x % len(key_string)
     modulus = numpy.vectorize(lambda x: x % 36)
 
-    to_int = numpy.vectorize(lambda x: round(x))
+    to_int = numpy.vectorize(round)
 
     def __init__(self, encrypt_key: numpy.ndarray) -> None:
         """

data_structures/hashing/number_theory/prime_numbers.py

@@ -14,7 +14,7 @@ def check_prime(number):
     elif number == special_non_primes[-1]:
         return 3
 
-    return all([number % i for i in range(2, number)])
+    return all(number % i for i in range(2, number))
 
 
 def next_prime(value, factor=1, **kwargs):

divide_and_conquer/strassen_matrix_multiplication.py

@@ -114,7 +114,7 @@ def strassen(matrix1: list, matrix2: list) -> list:
     """
     if matrix_dimensions(matrix1)[1] != matrix_dimensions(matrix2)[0]:
         raise Exception(
-            f"Unable to multiply these matrices, please check the dimensions. \n"
+            "Unable to multiply these matrices, please check the dimensions. \n"
             f"Matrix A:{matrix1} \nMatrix B:{matrix2}"
         )
     dimension1 = matrix_dimensions(matrix1)

dynamic_programming/rod_cutting.py

@@ -181,7 +181,7 @@ def _enforce_args(n: int, prices: list):
 
     if n > len(prices):
         raise ValueError(
-            f"Each integral piece of rod must have a corresponding "
+            "Each integral piece of rod must have a corresponding "
             f"price. Got n = {n} but length of prices = {len(prices)}"
         )
 

hashes/enigma_machine.py

@@ -55,5 +55,5 @@ if __name__ == "__main__":
     print("\n" + "".join(code))
     print(
         f"\nYour Token is {token} please write it down.\nIf you want to decode "
-        f"this message again you should input same digits as token!"
+        "this message again you should input same digits as token!"
     )

maths/integration_by_simpson_approx.py

@@ -92,16 +92,12 @@ def simpson_integration(function, a: float, b: float, precision: int = 4) -> flo
     assert callable(
         function
     ), f"the function(object) passed should be callable your input : {function}"
-    assert isinstance(a, float) or isinstance(
-        a, int
-    ), f"a should be float or integer your input : {a}"
-    assert isinstance(function(a), float) or isinstance(function(a), int), (
+    assert isinstance(a, (float, int)), f"a should be float or integer your input : {a}"
+    assert isinstance(function(a), (float, int)), (
         "the function should return integer or float return type of your function, "
         f"{type(a)}"
     )
-    assert isinstance(b, float) or isinstance(
-        b, int
-    ), f"b should be float or integer your input : {b}"
+    assert isinstance(b, (float, int)), f"b should be float or integer your input : {b}"
     assert (
         isinstance(precision, int) and precision > 0
     ), f"precision should be positive integer your input : {precision}"

matrix/matrix_operation.py

@@ -171,7 +171,7 @@ def _verify_matrix_sizes(
     shape = _shape(matrix_a) + _shape(matrix_b)
     if shape[0] != shape[3] or shape[1] != shape[2]:
         raise ValueError(
-            f"operands could not be broadcast together with shape "
+            "operands could not be broadcast together with shape "
             f"({shape[0], shape[1]}), ({shape[2], shape[3]})"
         )
     return (shape[0], shape[2]), (shape[1], shape[3])

project_euler/problem_067/sol1.py

@@ -29,7 +29,7 @@ def solution():
         triangle = f.readlines()
 
     a = map(lambda x: x.rstrip("\r\n").split(" "), triangle)
-    a = list(map(lambda x: list(map(lambda y: int(y), x)), a))
+    a = list(map(lambda x: list(map(int, x)), a))
 
     for i in range(1, len(a)):
         for j in range(len(a[i])):

sorts/external_sort.py

@@ -41,7 +41,7 @@ class FileSplitter:
                 i += 1
 
     def cleanup(self):
-        map(lambda f: os.remove(f), self.block_filenames)
+        map(os.remove, self.block_filenames)
 
 
 class NWayMerge: