Ich habe Scrapy mit Ubuntu-Paketen installiert, die auf der Scrapy-Website bereitgestellt werden. Aber beim Starten eines Scrapy-Projekts

scrapy startproject test 

Ich erhalte die Fehlermeldung als.

 Traceback (most recent call last):   File "/usr/bin/scrapy", line 5,
 in <module>
     from pkg_resources import load_entry_point   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3084,
 in <module>
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3070, in _call_aside
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3097, in _initialize_master_working_set
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 653, in _build_master
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 666, in _build_from_requirements
        File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 844, in resolve
      pkg_resources.ContextualVersionConflict: (pyasn1 0.1.7 (/usr/lib/python2.7/dist-packages),
 Requirement.parse('pyasn1>=0.1.8'), set(['pyasn1-modules']))

Bitte helfen Sie mir, diesen Fehler zu beheben. Ich verwende Python 2.7.6