lr5

calculate.py

-def check_types(op, allowed_types):
-    return type(op) in allowed_types
-
-def calculate(op1, op2, act, allowed_types=(int, float, list, tuple)):
-    if not check_types(op1, allowed_types) and op1 is not None:
-        r=("ошибка в первом операнде")
-    elif not check_types(op2, allowed_types) and op2 is not None:
-        r=("ошибка во втором операнде")
-    else:
-        if type(op1) != float and type(op2) != float:
-            if type(op1) in (int,str):
-                op1=float(op1)
-            if type(op2) in (int,str):
-                op2=float(op2)
-            if (type(op1) is list and type(op2) is list)or (type(op1) is tuple and type(op2) is tuple):
-                if act == "+":
-                    r = op1+op2
-                else:
-                    print("Действие невозможно")
-            if type(op1) in (list, tuple) and op2==None:
-                if act=="+":
-                    r=0
-                    for i in op1:
-                        r+=i
-                    return r
-                else:
-                    print("Действие невозможно")
-                    pass
-        if act == "+":
-            r = op1 + op2
-        elif act == "-":
-            r = op1 - op2
-        elif act == "*":
-            r = op1 * op2
-        elif act == "/":
-            if op2!=0:
-                r = op1 / op2
-            else:
-                r="деление на ноль невозможно"
-        else:
-            r = "Операция не распознана"
-    return r
-
-
-def main():
-    operand1 = float(input("Enter 1 value: ")) 
-    operand2 = float(input("Enter 2 value: "))
-    action = input("Enter type of operation: ")
-    result=(calculate(operand1, operand2, action))
-    print("Result is: " + str(result))
-
-if __name__ == "__main__":
-    main()
-    print("running by interpreter")
\ No newline at end of file
+PARAMS = {'precision': 0.00001, 'output_type': float, 'possible_types': (int, float)}
+
+
+def convert_precision(prec):
+    ''''
+    Преобразует точность данную в виде числа с плавающей точкой в целое число, возможное для использования с функцией round.
+    '''    
+    prec=str(prec)
+    for i in prec:
+        if i=='e':
+            x=prec.split('-')
+            return int(x[1])
+        if i==".":
+            x=prec.split('.')
+            return int(len(x[1]))
+
+def calculate(*args, **kwargs):
+    precision = convert_precision(kwargs['precision'])  
+    output_type = kwargs['output_type']
+    print(precision)
+
+    if args[len(args) - 1] == '+':
+        result_sum = sum(args[0:len(args) - 1])
+        if type(result_sum) is not output_type:
+            result_sum = output_type(result_sum)
+        return result_sum
+
+    if args[len(args) - 1] == '-':
+        result_diff=0
+        for n in args[0:len(args) - 1]:
+            result_diff -= n
+        if type(result_diff) is not output_type:
+            result_sum = output_type(result_diff)
+        return result_diff
+
+    if args[len(args) - 1] == '*':
+        result_mult = 1
+        for n in args[0:len(args) - 1]:
+            result_mult *= n
+        if type(result_mult) is not output_type:
+            result_mult = output_type(result_mult)
+        return round(result_mult, precision)
+
+    if args[len(args) - 1] == '/':
+        result_division = args[0]
+        for n in args[1:len(args) - 1]:
+            result_division /= n
+        if type(result_division) is not output_type:
+            result_division = output_type(result_division)
+        return round(result_division, precision)
+
+
+# print(calculate(*list(range(1, 10)), "+", **PARAMS)) # 1 + 2 + 3 + .. + 9
+# print(calculate(*list(range(1, 10)), "-", **PARAMS))
+print(calculate(*list(range(1, 5)), "/", **PARAMS))
+# print(calculate(*[1.0001, 2.2345], "*", **PARAMS))  # 2.23472345
+
+
+def test_packed_calc_sum():
+    inp1, action = [1, 2, 3, 4, 5, 6, 7, 8, 9], "+"
+    assert calculate(*inp1, action,
+                     **PARAMS) == 45.0, 'Sum of list of ints from 1 to 9'
+    assert type(calculate(*inp1, action, **
+                     PARAMS)) is type(45.0), 'Type of sum is incorrect'
+
+
+# test_packed_calc_sum()