我的版本是Successfully installed Scrapy-1.5.1。创建项目报错如下，怎么解

cmn8

Successfully installed Scrapy-1.5.1

C:\Users\ydh>scrapy startproject tast_scrapy
Traceback (most recent call last):
  File "d:\programfiles\python3x\lib\runpy.py", line 193, in _run_module_as_main

    "__main__", mod_spec)
  File "d:\programfiles\python3x\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "D:\programFiles\python3X\Scripts\scrapy.exe\__main__.py", line 9, in <mo
dule>
  File "d:\programfiles\python3x\lib\site-packages\scrapy\cmdline.py", line 149,
in execute
    cmd.crawler_process = CrawlerProcess(settings)
  File "d:\programfiles\python3x\lib\site-packages\scrapy\crawler.py", line 252,
in __init__
    log_scrapy_info(self.settings)
  File "d:\programfiles\python3x\lib\site-packages\scrapy\utils\log.py", line 14
9, in log_scrapy_info
    for name, version in scrapy_components_versions()
  File "d:\programfiles\python3x\lib\site-packages\scrapy\utils\versions.py", li
ne 35, in scrapy_components_versions
    ("pyOpenSSL", _get_openssl_version()),
  File "d:\programfiles\python3x\lib\site-packages\scrapy\utils\versions.py", li
ne 43, in _get_openssl_version
    import OpenSSL
  File "d:\programfiles\python3x\lib\site-packages\OpenSSL\__init__.py", line 8,
in <module>
    from OpenSSL import crypto, SSL
  File "d:\programfiles\python3x\lib\site-packages\OpenSSL\crypto.py", line 12,
in <module>
    from cryptography import x509
  File "d:\programfiles\python3x\lib\site-packages\cryptography\x509\__init__.py
", line 8, in <module>
    from cryptography.x509.base import (
  File "d:\programfiles\python3x\lib\site-packages\cryptography\x509\base.py", l
ine 16, in <module>
    from cryptography.x509.extensions import Extension, ExtensionType
  File "d:\programfiles\python3x\lib\site-packages\cryptography\x509\extensions.
py", line 18, in <module>
    from cryptography.hazmat.primitives import constant_time, serialization
  File "d:\programfiles\python3x\lib\site-packages\cryptography\hazmat\primitive
s\constant_time.py", line 11, in <module>
    from cryptography.hazmat.bindings._constant_time import lib
ModuleNotFoundError: No module named '_cffi_backend'

cmn8

我百度了，说少了一个cffi的模块，但我安装了还是不行

claws0n

cmn8 发表于 2018-8-25 13:49
我百度了，说少了一个cffi的模块，但我安装了还是不行

你怎么装？？ pip?

我爱鱼C！

pip install scrapy,
你是这样安装的吗

我爱鱼C！

你输入pip uninstall scrapy
之后输入
pip install scrapy
重装试试看

cmn8

claws0n 发表于 2018-8-25 14:02
你怎么装？？ pip?

是的pip install Sctapy

cmn8

我爱鱼C！ 发表于 2018-8-25 15:12
pip install scrapy,
你是这样安装的吗

是的

cmn8

cmn8 发表于 2018-8-25 22:17
是的pip install Sctapy

是的

cmn8

我爱鱼C！ 发表于 2018-8-25 18:47
你输入pip uninstall scrapy
之后输入
pip install scrapy

重装过，还是没用

cmn8

我爱鱼C！ 发表于 2018-8-25 18:47
你输入pip uninstall scrapy
之后输入
pip install scrapy

试了几次了，都没用

幽梦三影

我和你的问题一样，折腾了一个下午，安装anaconda 使用conda install scrapy

cmn8

幽梦三影 发表于 2018-9-2 10:46
我和你的问题一样，折腾了一个下午，安装anaconda 使用conda install scrapy

我后面也是用anaconda安装的，但还有没有期他方法

郑载序

cmn8 发表于 2018-8-25 22:17
是的pip install Sctapy

打错了！

qiuyouzhi

我就是pip安装的