ImportError: невозможно импортировать имя диспетчера для Scrapy

Question

Я установил scrapy, используя pip install scrapy в Windows 10. Он показывает ImportError: cannot import name 'dispatcher'. Я использую Python 3.5.

Помощь будет оценена. Спасибо.

Вот полный след:

"C:\Users\sameer\AppData\Local\Programs\Python\Python35\Scripts\scrapy.exe\__main__.py", line 5, in <module>
      File "c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages\scrapy\cmdline.py", line 9, in <module>
        from scrapy.crawler import CrawlerProcess
      File "c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages\scrapy\crawler.py", line 15, in <module>
        from scrapy.signalmanager import SignalManager
      File "c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages\scrapy\signalmanager.py", line 2, in <module>
        from pydispatch import dispatcher
    ImportError: cannot import name 'dispatcher'

ВЫХОД pip install scrapy

Requirement already satisfied: scrapy in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (1.5.0)
Requirement already satisfied: cssselect>=0.9 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (1.0.3)
Requirement already satisfied: parsel>=1.1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (1.4.0)
Requirement already satisfied: w3lib>=1.17.0 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (1.19.0)
Requirement already satisfied: six>=1.5.2 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (1.11.0)
Requirement already satisfied: PyDispatcher>=2.0.5 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (2.0.5)
Requirement already satisfied: pyOpenSSL in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (18.0.0)
Requirement already satisfied: lxml in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (4.2.2)
Requirement already satisfied: queuelib in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (1.5.0)
Requirement already satisfied: service-identity in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (17.0.0)
Requirement already satisfied: Twisted>=13.1.0 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from scrapy) (18.4.0)
Requirement already satisfied: cryptography>=2.2.1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from pyOpenSSL->scrapy) (2.2.2)
Requirement already satisfied: pyasn1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from service-identity->scrapy) (0.4.3)
Requirement already satisfied: pyasn1-modules in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from service-identity->scrapy) (0.2.1)
Requirement already satisfied: attrs in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from service-identity->scrapy) (18.1.0)
Requirement already satisfied: zope.interface>=4.4.2 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from Twisted>=13.1.0->scrapy) (4.5.0)
Requirement already satisfied: constantly>=15.1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from Twisted>=13.1.0->scrapy) (15.1.0)
Requirement already satisfied: incremental>=16.10.1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from Twisted>=13.1.0->scrapy) (17.5.0)
Requirement already satisfied: Automat>=0.3.0 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from Twisted>=13.1.0->scrapy) (0.7.0)
Requirement already satisfied: hyperlink>=17.1.1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from Twisted>=13.1.0->scrapy) (18.0.0)
Requirement already satisfied: idna>=2.1 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from cryptography>=2.2.1->pyOpenSSL->scrapy) (2.7)
Requirement already satisfied: cffi>=1.7; platform_python_implementation != "PyPy" in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from cryptography>=2.2.1->pyOpenSSL->scrapy) (1.11.5)
Requirement already satisfied: asn1crypto>=0.21.0 in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from cryptography>=2.2.1->pyOpenSSL->scrapy) (0.24.0)
Requirement already satisfied: setuptools in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from zope.interface>=4.4.2->Twisted>=13.1.0->scrapy) (39.2.0)
Requirement already satisfied: pycparser in c:\users\sameer\appdata\local\programs\python\python35\lib\site-packages (from cffi>=1.7; platform_python_implementation != "PyPy"->cryptography>=2.2.1->pyOpenSSL->scrapy) (2.18)

Answer 1

Вам необходимо убедиться, что вы используете pip для Python3, если у вас также установлен Python2 . Тогда вы должны использовать: pip3 install PyDispatcher (в настоящее время в версии 2.0.5 ). Затем вы импортируете с:

from scrapy import signals
from scrapy.xlib.pydispatch import dispatcher
...

signal может быть или не быть необязательным, в зависимости от того, что еще вы хотите сделать.

Answer 2

вы пробовали pip install dispatcher

редактирование:

при попытке установить его самостоятельно, я заметил некоторые сломанные зависимости.

flask-babelex 0.9.3 требует спикер> = 1.2, который не установлен.

pyasn1-modules 0.2.1 имеет требование pyasn1 <0.5.0,> = 0.4.1, но у вас будет pyasn1 0.1.9, что несовместимо.

Итак, я исправил зависимости, как написано, сначала pip install speaklater, тогда pip uninstall pyasn1 && pip install pyasn1

после того, как все зависимости были удовлетворены, скрапирование работало нормально.

Можете ли вы показать вывод 'pip install scrapy'?