fix new lint errors from flake8

Michael Merickel

2018-10-26 25737fd6a412f4fe9b780305c0260bb6e938be1b

 src/pyramid/scripts/pcreate.py

@@ -266,7 +266,7 @@
        try:
            # use absolute imports
            __import__(pkg_name, globals(), locals(), [], 0)
        except ImportError as error:
        except ImportError:
            pkg_exists = False
        if not pkg_exists:
            return True