Unable to run first example : syntax error

[Blandine11]

Hello guys,

I'm new in python and using PiCN too.
I follow the steps in your guthub to test the PiCN example but I have an error that I don't understand.
While running this command picn-repo --format ndntlv /tmp/repo /the/prefix 10000 &
I have the following error : Traceback (most recent call last): File "/home/ubuntu/PiCN/PiCN/Executable/ICNDataRepository.py", line 6, in <module> from PiCN.ProgramLibs.ICNDataRepository import ICNDataRepository File "/home/ubuntu/PiCN/PiCN/ProgramLibs/ICNDataRepository/__init__.py", line 3, in <module> from .ICNDataRepository import ICNDataRepository File "/home/ubuntu/PiCN/PiCN/ProgramLibs/ICNDataRepository/ICNDataRepository.py", line 59 self.repo: BaseRepository = SimpleMemoryRepository(prefix, manager, logger) ^ SyntaxError: invalid syntax
I use python version 3.7 in ubuntu 16.04.

Your help will be appreciated.