Improve strict not supported in inline config error message

scop · scop · commit c32dfe52cc1e · 2020-01-19T13:00:12.000+02:00
diff --git a/mypy/config_parser.py b/mypy/config_parser.py
@@ -343,7 +343,11 @@ def set_strict_flags() -> None:
         if reports:
             errors.append((lineno, "Reports not supported in inline configuration"))
         if strict_found:
-            errors.append((lineno, "Setting 'strict' not supported in inline configuration"))
+            errors.append((lineno,
+                           "Setting 'strict' not supported in inline configuration: specify it in "
+                           "a configuration file instead, or set individual inline flags "
+                           "(see 'mypy -h' for the list of flags enabled in strict mode)"))
+
         sections.update(new_sections)
 
     return sections, errors
diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
@@ -161,4 +161,4 @@ main:1: error: Unrecognized option: skip_file = True
 [case testInlineStrict]
 # mypy: strict
 [out]
-main:1: error: Setting 'strict' not supported in inline configuration
+main:1: error: Setting 'strict' not supported in inline configuration: specify it in a configuration file instead, or set individual inline flags (see 'mypy -h' for the list of flags enabled in strict mode)
