pyspider安装中的问题,pyspider: 未找到命令如何解决呀

deepin@deepin:~$ pip install pyspider
Collecting pyspider
Collecting click>=3.3 (from pyspider)
  Using cached click-6.7-py2.py3-none-any.whl
Collecting wsgidav (from pyspider)
  Using cached WsgiDAV-2.2.4-py2.py3-none-any.whl
Collecting requests>=2.2 (from pyspider)
  Using cached requests-2.18.4-py2.py3-none-any.whl
Collecting tblib>=1.3.0 (from pyspider)
  Using cached tblib-1.3.2-py2.py3-none-any.whl
Collecting Flask-Login>=0.2.11 (from pyspider)
Collecting u-msgpack-python>=1.6 (from pyspider)
  Using cached u_msgpack_python-2.4.1-py2.py3-none-any.whl
Collecting chardet>=2.2 (from pyspider)
  Using cached chardet-3.0.4-py2.py3-none-any.whl
Collecting Flask>=0.10 (from pyspider)
  Using cached Flask-0.12.2-py2.py3-none-any.whl
Collecting Jinja2>=2.7 (from pyspider)
  Using cached Jinja2-2.10-py2.py3-none-any.whl
Collecting pycurl (from pyspider)
Collecting cssselect>=0.9 (from pyspider)
  Using cached cssselect-1.0.3-py2.py3-none-any.whl
Collecting six>=1.5.0 (from pyspider)
  Using cached six-1.11.0-py2.py3-none-any.whl
Collecting lxml (from pyspider)
  Using cached lxml-4.1.1-cp27-cp27mu-manylinux1_x86_64.whl
Collecting pyquery (from pyspider)
  Using cached pyquery-1.4.0-py2.py3-none-any.whl
Collecting tornado>=3.2 (from pyspider)
Collecting defusedxml (from wsgidav->pyspider)
  Using cached defusedxml-0.5.0-py2.py3-none-any.whl
Collecting urllib3<1.23,>=1.21.1 (from requests>=2.2->pyspider)
  Using cached urllib3-1.22-py2.py3-none-any.whl
Collecting idna<2.7,>=2.5 (from requests>=2.2->pyspider)
  Using cached idna-2.6-py2.py3-none-any.whl
Collecting certifi>=2017.4.17 (from requests>=2.2->pyspider)
  Using cached certifi-2017.11.5-py2.py3-none-any.whl
Collecting itsdangerous>=0.21 (from Flask>=0.10->pyspider)
Collecting Werkzeug>=0.7 (from Flask>=0.10->pyspider)
  Using cached Werkzeug-0.14.1-py2.py3-none-any.whl
Collecting MarkupSafe>=0.23 (from Jinja2>=2.7->pyspider)
Collecting singledispatch (from tornado>=3.2->pyspider)
  Using cached singledispatch-3.4.0.3-py2.py3-none-any.whl
Collecting backports-abc>=0.4 (from tornado>=3.2->pyspider)
  Using cached backports_abc-0.5-py2.py3-none-any.whl
Installing collected packages: click, defusedxml, wsgidav, urllib3, idna, chardet, certifi, requests, tblib, itsdangerous, Werkzeug, MarkupSafe, Jinja2, Flask, Flask-Login, u-msgpack-python, pycurl, cssselect, six, lxml, pyquery, singledispatch, backports-abc, tornado, pyspider
Successfully installed Flask-0.12.2 Flask-Login-0.4.1 Jinja2-2.10 MarkupSafe-1.0 Werkzeug-0.14.1 backports-abc-0.5 certifi-2017.11.5 chardet-3.0.4 click-6.7 cssselect-1.0.3 defusedxml-0.5.0 idna-2.6 itsdangerous-0.24 lxml-4.1.1 pycurl-7.43.0.1 pyquery-1.4.0 pyspider-0.3.9 requests-2.18.4 singledispatch-3.4.0.3 six-1.11.0 tblib-1.3.2 tornado-4.5.3 u-msgpack-python-2.4.1 urllib3-1.22 wsgidav-2.2.4

deepin@deepin:~$ pyspider
bash: pyspider: 未找到命令