3.6 back compatibility make me cry

CGRtools/algorithms/sssr.py

@@ -225,31 +225,31 @@ def __canonic_ring(ring: Tuple[int, ...]) -> Tuple[int, ...]:
         ndx = ring.index(n)
         if ndx == 0:
             if ring[-1] < ring[1]:
-                return n, *ring[:0:-1]
+                return (n, *ring[:0:-1])
             return ring
         elif ndx == len(ring) - 1:
             if ring[0] > ring[-2]:
                 return ring[::-1]
-            return n, *ring[:-1]
+            return (n, *ring[:-1])
         if ring[ndx + 1] > ring[ndx - 1]:
-            return *ring[ndx::-1], *ring[:ndx:-1]
-        return *ring[ndx:], *ring[:ndx]
+            return (*ring[ndx::-1], *ring[:ndx:-1])
+        return (*ring[ndx:], *ring[:ndx])
 
     @staticmethod
     def __ring_scissors(ring: Tuple[int, ...], n: int, m: int) -> Tuple[int, ...]:
         ndx = ring.index(n)
         mdx = ring.index(m)
         if ndx == 0:
             if mdx == 1:
-                return n, *ring[:0:-1]
+                return (n, *ring[:0:-1])
             return ring
         elif ndx == len(ring) - 1:
             if mdx == 0:
                 return ring[::-1]
-            return n, *ring[:-1]
+            return (n, *ring[:-1])
         if ndx < mdx:
-            return *ring[ndx::-1], *ring[:ndx:-1]
-        return *ring[ndx:], *ring[:ndx]
+            return (*ring[ndx::-1], *ring[:ndx:-1])
+        return (*ring[ndx:], *ring[:ndx])
 
     @staticmethod
     def __ring_adjacency(ring: Tuple[int, ...]) -> Dict[int, List[int]]:
@@ -324,11 +324,11 @@ def __get_unique_chord(ring: Tuple[int, ...], common: Set[int]) -> Optional[Tupl
                 return ()
         else:
             if common == set(ring[:lc]):
-                return *ring[lc - 1:], ring[0]
+                return (*ring[lc - 1:], ring[0])
             for _ in range(len(ring) - 1):
                 ring = (*ring[1:], ring[0])
                 if common == set(ring[:lc]):
-                    return *ring[lc - 1:], ring[0]
+                    return (*ring[lc - 1:], ring[0])
 
     @classmethod
     def __connected_rings(cls, rings, seen_rings):

CGRtools/algorithms/standardize.py

@@ -1621,9 +1621,9 @@ def explicify_hydrogens(self: 'ReactionContainer') -> int:
         for m in self.molecules():
             if not isinstance(m, Standardize):
                 raise TypeError('Only Molecules supported')
-            map = max(m, default=0)
-            if map > start_map:
-                start_map = map
+            map_ = max(m, default=0)
+            if map_ > start_map:
+                start_map = map_
 
         mapping = defaultdict(list)
         for m in self.reactants:

setup.py

@@ -62,7 +62,7 @@ def finalize_options(self):
     license='LGPLv3',
     author='Dr. Ramil Nugmanov',
     author_email='nougmanoff@protonmail.com',
-    python_requires='>=3.7.1',
+    python_requires='>=3.6.1',
     cmdclass=cmd_class,
     install_requires=['CachedMethods>=0.1.4,<0.2'],
     extras_require={'mrv': ['lxml>=4.1'], 'clean2d': ['py-mini-racer>=0.4.0'], 'jit': ['numpy>=1.18', 'numba>=0.50']},