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pythonperforcep4python

P4Python run method does not work on empty folder

I want to search a Perforce depot for files. I do this from a python script and use the p4python library command:

list = p4.run("files", "//mypath/myfolder/*")

This works fine as long as myfolder contains some files. I get a python list as a return value. But when there is no file in myfolder the program stops running and no error message is displayed. My goal is to get an empty python list, so that I can see that this folder doesn't contain any files.

Does anybody has some ideas? I could not find information in the p4 files documentation and on StackOverflow.

Solution

  • I'm going to guess you've got an exception handler around that command execution that's eating the exception and exiting. I wrote a very simple test script and got this:

    C:\Perforce\test>C:\users\samwise\AppData\local\programs\python\Python36-32\python files.py
Traceback (most recent call last):
  File "files.py", line 6, in <module>
    print(p4.run("files", "//depot/no such path/*"))
  File "C:\users\samwise\AppData\local\programs\python\Python36-32\lib\site-packages\P4.py", line 611, in run
    raise e
  File "C:\users\samwise\AppData\local\programs\python\Python36-32\lib\site-packages\P4.py", line 605, in run
    result = P4API.P4Adapter.run(self, *flatArgs)
P4.P4Exception: [P4#run] Errors during command execution( "p4 files //depot/no such path/*" )

        [Error]: "//depot/no such path/* - must refer to client 'Samwise-dvcs-1509687817'."