Merge pull request #2236 from MrMino/black-magic-comma

Black profile: enable magic comma

Author: staticdev

docs/configuration/profiles.md

@@ -12,6 +12,7 @@ To use any of the listed profiles, use `isort --profile PROFILE_NAME` from the c
 
  - **multi_line_output**: `3`
  - **include_trailing_comma**: `True`
+ - **split_on_trailing_comma**: `True`
  - **force_grid_wrap**: `0`
  - **use_parentheses**: `True`
  - **ensure_newline_before_comments**: `True`

isort/profiles.py

@@ -5,6 +5,7 @@
 black = {
     "multi_line_output": 3,
     "include_trailing_comma": True,
+    "split_on_trailing_comma": True,
     "force_grid_wrap": 0,
     "use_parentheses": True,
     "ensure_newline_before_comments": True,

tests/unit/profiles/test_black.py

@@ -443,3 +443,16 @@ def sub(a: np.ndarray, b: np.ndarray) -> np.ndarray: ...
         lines_before_imports=2,  # will be ignored
         lines_after_imports=2,  # will be ignored
     )
+
+
+def test_black_trailing_comma():
+    black_test(
+    "from x import (a, b, c,)\n",
+    """\
+from x import (
+    a,
+    b,
+    c,
+)
+""",
+    )