[GitHub] [spark] HyukjinKwon commented on a diff in pull request #42196: Improve assertDataFrameEqual error message format

["HyukjinKwon (via GitHub)" <gi...@apache.org>]

HyukjinKwon commented on code in PR #42196:
URL: https://github.com/apache/spark/pull/42196#discussion_r1277112278


##########
python/pyspark/testing/utils.py:
##########
@@ -189,6 +190,39 @@ def search_jar(project_relative_path, sbt_jar_name_prefix, mvn_jar_name_prefix):
         return jars[0]
 
 
+def _context_diff(actual: List[str], expected: List[str], n: int = 3):
+    """
+    Modified from difflib context_diff API,
+    see original code here: https://github.com/python/cpython/blob/main/Lib/difflib.py#L1180
+    """
+    def red(s: str) -> str:
+        RedColor = "\033[31m"
+        NoColor = "\033[0m"
+        return RedColor + str(s) + NoColor

Review Comment:
   ```suggestion
           red_color = "\033[31m"
           no_color = "\033[0m"
           return red_color + str(s) + no_color
   ```



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