[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

maths/base_neg2_conversion.py

@@ -23,7 +23,7 @@ def decimal_to_negative_base_2(num: int) -> int:
         return 0
     ans = ""
     while num != 0:
-        num,rem =divmod(num, -2)
+        num, rem = divmod(num, -2)
         if rem < 0:
             rem += 2
             num += 1
@@ -33,4 +33,5 @@ def decimal_to_negative_base_2(num: int) -> int:
 
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod()