René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Allow aborting (interrupting) a running operation","articleBody":"Lengthy operations can't be interrupted in PythonTurtle, as of today. This proves to be a huge problem (which is also related to #24).\r\n\r\nUser interface becomes unresponsive\r\n---------------\r\nEspecially with loops, and worse, nested loops, users are quickly tempted to use large numbers (for ranges), which creates an unlucky situation at best (when having to wait for a few minutes) or the need to kill the application, e.g., for nested loops (when an operation of *O*(*n*²) or more was triggered).\r\n\r\nExpected behavior\r\n------------\r\nIt should be possible to interrupt the calculations (e.g. by pressing `\u003cCtrl\u003e`+`C` and/or the `\u003cEsc\u003e` key).\r\nIt should be easy to interrupt the turtle and return to the interpreter prompt.","author":{"url":"https://github.com/bittner","@type":"Person","name":"bittner"},"datePublished":"2018-10-04T23:24:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/126/PythonTurtle/issues/126"}