# Invoke Python - pipe is broken **URL:** \ **Category:** Studio\ **Tags:** tools, question, studio, python, activities\ **Created:** [January 29, 2022, 3:29am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140 "2022-01-29T03:29:38Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![timrj](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/timrj/32/77942_2.png) [@timrj](https://forum.uipath.com/u/timrj)\ **Post date:** [January 29, 2022, 3:29am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/1 "2022-01-29T03:29:39Z")
I have searched the forum and have not seen an answer that solves this for me. I have been using invoked python methods (and some existing robots are still working with this method) for a number of years. However, after the last upgrade 2021.10.4 I am getting the error below, generated from the invoke python method activity. I have tried this on a number of different python code bases to see if it changed the outcome and the summary is: 1. If the python code base invoked is a single function on a single file and does not import another function it works and has no parameters 2. If the python code base invoked is a single file with the called function then invoking other functions in the same file this works even with parameters 3. If the the called function imports a function from another python file, even if it doesn’t use it, the error appears, with or without parameters. This does not appear to be a file size issue as my test cases are just sending json text back and forth (as I have seen commentary that this error can be caused by large files). And in scenarios 1 and 2 it works so it isn’t my python install or version or scope activity. Am I missing something, or is this a limitation? For some of my projects I can make it work with a single file with multiple functions but I would prefer not to compromise the python project structures. Note that the older robots that utilise python fit example 3 and are still working. To trouble shoot this I have: - Reinstalled studio - Reinstalled the python packages - started a completely new project to test the scenarios above RemoteException wrapping System.IO.IOException: Pipe is broken. at System.IO.Pipes.PipeStream.CheckWriteOperations() at System.IO.Pipes.PipeStream.Flush() at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder) at System.IO.StreamWriter.set\_AutoFlush(Boolean value) at UiPath.Python.Service.PythonProxy.RequestAsync(PythonRequest request, CancellationToken ct) at UiPath.Python.Service.PythonProxy.Shutdown() at UiPath.Python.Impl.OutOfProcessEngine.Release() at UiPath.Python.Activities.PythonScope.Cleanup() at UiPath.Python.Activities.PythonScope.OnFaulted(NativeActivityFaultContext faultContext, Exception propagatedException, ActivityInstance propagatedFrom) at System.Activities.Runtime.FaultCallbackWrapper.Invoke(NativeActivityFaultContext faultContext, Exception propagatedException, ActivityInstance propagatedFrom) at System.Activities.Runtime.FaultCallbackWrapper.FaultWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager) ---
**Author:** ![Nithinkrishna](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/nithinkrishna/32/561519_2.png) [@Nithinkrishna](https://forum.uipath.com/u/Nithinkrishna)\ **Post date:** [January 29, 2022, 4:27am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/2 "2022-01-29T04:27:38Z")
Hey @timrj This looks like python error. Found this [python - IOError: [Errno 32] Broken pipe when piping: `prog.py | othercmd` - Stack Overflow](https://stackoverflow.com/questions/14207708/ioerror-errno-32-broken-pipe-when-piping-prog-py-othercmd) May be give it a try. Thanks #nK ---
**Author:** ![timrj](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/timrj/32/77942_2.png) [@timrj](https://forum.uipath.com/u/timrj)\ **Post date:** [February 6, 2022, 7:55am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/3 "2022-02-06T07:55:39Z")
Thanks, i had a look and I don’t think it’s a python problem. The scripts that are invoked work fine when run in isolation. It is only when they are invoked by UIPath that the error occurs. I have also got one working by just bringing every code module into the single file but that is not ideal. I have seen others with the same problem but none seem to have found a solution. ---
**Author:** ![shiliqiang](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/shiliqiang/32/263451_2.png) [@shiliqiang](https://forum.uipath.com/u/shiliqiang)\ **Post date:** [February 9, 2022, 7:31am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/4 "2022-02-09T07:31:19Z")
> [@timrj](#): > > n others with the sa 我也是，找了好多都不行 ---
**Author:** ![ran.an](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/ran.an/32/176642_2.png) [@ran.an](https://forum.uipath.com/u/ran.an)\ **Post date:** [February 22, 2022, 10:02pm UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/5 "2022-02-22T22:02:37Z")
Same issue here, the python code runs perfectly by PyCharm. but cannot invoke inside UiPath. ---
**Author:** ![timrj](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/timrj/32/77942_2.png) [@timrj](https://forum.uipath.com/u/timrj)\ **Post date:** [February 23, 2022, 5:46am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/6 "2022-02-23T05:46:02Z")
I even triggered the same python code base from a web app and it all worked with same params and returned data. ---
**Author:** ![shiliqiang](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/shiliqiang/32/263451_2.png) [@shiliqiang](https://forum.uipath.com/u/shiliqiang)\ **Post date:** [March 29, 2022, 3:14am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/8 "2022-03-29T03:14:13Z")
1、Change the Python Version 3.6 2、Change the uipath.python.activities 1.3 Try it~ ---
**Author:** ![system](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/system/32/182466_2.png) [@system](https://forum.uipath.com/u/system)\ **Post date:** [April 2, 2022, 1:39am UTC](https://forum.uipath.com/t/invoke-python-pipe-is-broken/395140/9 "2022-04-02T01:39:32Z")
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