matplotlib
diff --git a/‎src/_macosx.m
Copy file name to clipboardExpand all lines: src/_macosx.m
+4Lines changed: 4 additions & 0 deletions b/‎src/_macosx.m
Copy file name to clipboardExpand all lines: src/_macosx.m
+4Lines changed: 4 additions & 0 deletions
@@ -461,6 +461,8 @@ int mpl_check_modifier(
         return NULL;
     }
 
+    Py_BEGIN_ALLOW_THREADS
+
     NSDate* date =
         (timeout > 0.0) ? [NSDate dateWithTimeIntervalSinceNow: timeout]
                         : [NSDate distantFuture];
@@ -473,6 +475,8 @@ int mpl_check_modifier(
        [NSApp sendEvent: event];
     }
 
+    Py_END_ALLOW_THREADS
+
     Py_RETURN_NONE;
 }
Original file line number	Diff line number	Diff line change
`@@ -461,6 +461,8 @@ int mpl_check_modifier(`
`461`	`461`	`return NULL;`
`462`	`462`	`}`
`463`	`463`
	`464`	`+ Py_BEGIN_ALLOW_THREADS`
	`465`	`+`
`464`	`466`	`NSDate* date =`
`465`	`467`	`(timeout > 0.0) ? [NSDate dateWithTimeIntervalSinceNow: timeout]`
`466`	`468`	`: [NSDate distantFuture];`
`@@ -473,6 +475,8 @@ int mpl_check_modifier(`
`473`	`475`	`[NSApp sendEvent: event];`
`474`	`476`	`}`
`475`	`477`
	`478`	`+ Py_END_ALLOW_THREADS`
	`479`	`+`
`476`	`480`	`Py_RETURN_NONE;`
`477`	`481`	`}`
`478`	`482`