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Installation problem with Ubuntu 18.04

Hi! I’m having a lot of problems with ubuntu 18.04. I’ve followed the installation tutorial using pip install psychopy but I get this error:

Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/usr/lib/python3.6/tokenize.py", line 452, in open
        buffer = _builtin_open(filename, 'rb')
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-build-j16qk4m9/pyqt5/setup.py'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-j16qk4m9/pyqt5/

I don’t know how can I solve. I’ve tried with pip3, using the outdated version in apt repositories but nothing works.
How can I do?