Running setup.py install for pycparser ... done
Running setup.py install for PyDispatcher ... done
WARNING: The script automat-visualize is installed in '/Library/Frameworks/Python.framework/Versions/3.7/bin' which is not on PATH.
Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Running setup.py install for Twisted ... done
WARNING: The script scrapy is installed in '/Library/Frameworks/Python.framework/Versions/3.7/bin' which is not on PATH.
Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
我的运行环境是Mac 然后：
scrapy startproject douban
-bash: scrapy: command not found
请问我的问题出现在哪里以及如何解决？