无法设置 Scrapy 项目

Question

我在终端输入这个：

$ scrapy startproject tutorial

我无法让它开始一个新的scrapy项目，我一直在安装所有scrapy需要的东西。我只是无法让它工作。这是它给我的错误信息：

File "/Users/carterdavis/anaconda/bin/scrapy", line 4, in <module>
execute()
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/cmdline.py", line 122, in execute
cmds = _get_commands_dict(settings, inproject)
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/cmdline.py", line 46, in _get_commands_dict
cmds = _get_commands_from_module('scrapy.commands', inproject)
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/cmdline.py", line 29, in _get_commands_from_module
for cmd in _iter_command_classes(module):
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/cmdline.py", line 20, in _iter_command_classes
for module in walk_modules(module_name):
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/utils/misc.py", line 68, in walk_modules
submod = import_module(fullpath)
File "/Users/carterdavis/anaconda/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/commands/bench.py", line 3, in <module>
from scrapy.tests.mockserver import MockServer
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/scrapy/tests/mockserver.py", line 6, in <module>
from twisted.internet import reactor, defer, ssl
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/twisted/internet/ssl.py", line 25, in <module>
from OpenSSL import SSL
File "/Users/carterdavis/anaconda/lib/python2.7/site-packages/OpenSSL/__init__.py", line 36, in <module>
from OpenSSL import crypto
ImportError: dlopen(/Users/carterdavis/anaconda/lib/python2.7/site-packages/OpenSSL/crypto.so, 10): Library not loaded: libssl.1.0.0.dylib
Referenced from: /Users/carterdavis/anaconda/lib/python2.7/site-packages/OpenSSL/crypto.so
Reason: image not found

我有 Python 2.7 和运行 scrapy 所需的每个包。

Answer 1

这是密码学安装的问题，请尝试再次安装密码学，其中也包括安装 OpenSSL。您的项目将开始使用它。请按照以下步骤操作。

对于 Debian 和 Ubuntu

$ sudo apt-get install build-essential libssl-dev libffi-dev python-dev

对于 Fedora 和 RHEL 衍生产品

$ sudo yum install gcc libffi-devel python-devel openssl-devel

安装后， 您现在应该可以使用通常的方式构建和安装密码学了

$ pip install cryptography

在此之后，尝试创建你的 scrapy 项目。

Answer 2

看起来您正在使用 Anaconda - 我遇到了同样的问题，这解决了它（在 OS X 10.9 和 10.10 上测试）。

如果你安装了scrapy，首先pip卸载它。

使用 conda 安装密码学：

conda install cryptography

设置 DYLD_LIBRARY_PATH 环境变量：

export DYLD_LIBRARY_PATH=$HOME/anaconda/lib

然后重新安装scrapy

pip install scrapy

Answer 3

导入错误： dlopen(/Users/carterdavis/anaconda/lib/python2.7/site-packages/OpenSSL/crypto.so, 10)：库未加载：libssl.1.0.0.dylib

根据上面的错误信息，您的操作系统中是否安装了 libssl 软件包？如果您使用的是 Ubuntu（或 Debian），请尝试执行那里的命令：

apt-get install libssl1.0.0