Update test_sum_of_numbers.py

kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:76: error: Name "b" already defined on line 70  [no-redef]
kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:81: error: Name "a" already defined on line 69  [no-redef]
kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:82: error: Name "b" already defined on line 70  [no-redef]
kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:109: error: Name "a" already defined on line 103  [no-redef]
kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:110: error: Name "b" already defined on line 104  [no-redef]
kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:111: error: Name "expected" already defined on line 104  [no-redef]
kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py:116: error: Name "a" already defined on line 103  [no-redef]

kyu_7/beginner_series_sum_of_numbers/test_sum_of_numbers.py

@@ -9,7 +9,8 @@
 import unittest
 import allure
 from utils.log_func import print_log
-from kyu_7.beginner_series_sum_of_numbers.sum_of_numbers import get_sum
+from kyu_7.beginner_series_sum_of_numbers.sum_of_numbers \
+    import get_sum
 
 
 # pylint: disable-msg=R0801
@@ -73,13 +74,13 @@ def test_get_sum_positive_numbers(self):
 
         with allure.step("Assert the result"):
             a = expected = 1
-            b: int = 0
+            b = 0
             print_log(a=a, b=b, expected=expected)
             self.assertEqual(get_sum(a, b), expected)
 
         with allure.step("Assert the result"):
-            a: int = 1
-            b: int = 2
+            a = 1
+            b = 2
             expected = a + b
             print_log(a=a, b=b, expected=expected)
             self.assertEqual(get_sum(a, b), expected)
@@ -106,14 +107,14 @@ def test_get_sum_negative_numbers(self):
             self.assertEqual(get_sum(a, b), expected)
 
         with allure.step("Assert the result"):
-            a: int = -1
-            b: int = 0
+            a = -1
+            b = 0
             expected: int = a + b
             print_log(a=a, b=b, expected=expected)
             self.assertEqual(get_sum(a, b), expected)
 
         with allure.step("Assert the result"):
-            a: int = -1
+            a = -1
             b = expected = 2
             print_log(a=a, b=b, expected=expected)
             self.assertEqual(get_sum(a, b), expected)