Question

aptitude search  packaging
i   packaging-dev                                                                  - convenient tools to develop packages

现在安装packaging-dev

debian8@hwy:~$ sudo apt-get install  packaging-dev
debian8@hwy:~$ sudo aptitude search cryptography

i A python-cryptography                                                            - Python library exposing cryptographic recipes and primitives (Python 2)                 
p   python-cryptography-doc                                                        - Python library exposing cryptographic recipes and primitives (documentation)            
p   python-cryptography-vectors                                                    - Test vectors for python-cryptography (Python 2)                                         
p   python3-cryptography                                                           - Python library exposing cryptographic recipes and primitives (Python 3)                 
p   python3-cryptography-vectors                                                   - Test vectors for python-cryptography (Python 3)

现在安装python-cryptography

debian8@hwy:~$ sudo apt-get install python-cryptography

pip3 install scrapy
Traceback (most recent call last):
  File "/usr/bin/pip3", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 70, in <module>
    import packaging.version
ImportError: No module named 'packaging'

已经安装了pakaging，为什么无法导入？

Answer 1

ggplot(data.frame(x = c(-4, 10)), aes(x = x)) +
stat_function(fun = dt, args = list(df = 1.5))

我可以使用Collecting scrapy Downloading Scrapy-1.3.0-py2.py3-none-any.whl (239kB) 100% |████████████████████████████████| 245kB 1.1MB/s Collecting PyDispatcher>=2.0.5 (from scrapy) Downloading PyDispatcher-2.0.5.tar.gz Requirement already satisfied: Twisted>=13.1.0 in /usr/lib/python2.7/dist-packages (from scrapy) Requirement already satisfied: lxml in /usr/lib/python2.7/dist-packages (from scrapy) Requirement already satisfied: service-identity in /usr/lib/python2.7/dist-packages (from scrapy) Requirement already satisfied: pyOpenSSL in /usr/lib/python2.7/dist-packages (from scrapy) Collecting w3lib>=1.15.0 (from scrapy) Downloading w3lib-1.16.0-py2.py3-none-any.whl Collecting parsel>=0.9.5 (from scrapy) Downloading parsel-1.1.0-py2.py3-none-any.whl Collecting cssselect>=0.9 (from scrapy) Downloading cssselect-1.0.1-py2.py3-none-any.whl Requirement already satisfied: six>=1.5.2 in /usr/local/lib/python2.7/dist-packages (from scrapy) Collecting queuelib (from scrapy) Downloading queuelib-1.4.2-py2.py3-none-any.whl Requirement already satisfied: cryptography>=0.7 in /usr/lib/python2.7/dist-packages (from pyOpenSSL->scrapy) Installing collected packages: PyDispatcher, w3lib, cssselect, parsel, queuelib, scrapy Running setup.py install for PyDispatcher ... done Successfully installed PyDispatcher-2.0.5 cssselect-1.0.1 parsel-1.1.0 queuelib-1.4.2 scrapy-1.3.0 w3lib-1.16.0

进行安装

Answer 2

通过编译和

安装python3.6

pip3.6 install scrapy

to sovle issues relate dto install srapy
to sovle issues relate dto install srapy

为什么不能在我的debian8上安装scrapy？

2 个答案: