我的 Ubuntu 10.04 附带了 Python 2.6。现在,我还安装了 Python 2.7,这是现在的系统默认设置,因为当我从终端启动
python
时,它会启动 python 2.7.
现在,我想使用 pip 安装库 pysftp,但我很难这样做。以下是我的尝试和结论的一些结果。我做了
pip install pysftp
,但它说了以下内容:
Downloading/unpacking pysftp
Running setup.py egg_info for package pysftp
Traceback (most recent call last):
File "<string>", line 3, in <module>
File "/usr/local/lib/python2.6/dist-packages/setuptools/__init__.py", line 12, in <module>
from setuptools.extension import Extension
File "/usr/local/lib/python2.6/dist-packages/setuptools/extension.py", line 8, in <module>
from .dist import _get_unpatched
File "/usr/local/lib/python2.6/dist-packages/setuptools/dist.py", line 21, in <module>
packaging = pkg_resources.packaging
AttributeError: 'module' object has no attribute 'packaging'
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 3, in <module>
File "/usr/local/lib/python2.6/dist-packages/setuptools/__init__.py", line 12, in <module>
from setuptools.extension import Extension
File "/usr/local/lib/python2.6/dist-packages/setuptools/extension.py", line 8, in <module>
from .dist import _get_unpatched
File "/usr/local/lib/python2.6/dist-packages/setuptools/dist.py", line 21, in <module>
packaging = pkg_resources.packaging
AttributeError: 'module' object has no attribute 'packaging'
----------------------------------------
Command python setup.py egg_info failed with error code 1
Storing complete log in ./pip-log.txt
在我看来,pip(显然是在安装 Python 2.7 之前安装的)链接到不支持 pysftp 的旧版本 Python。也因为当我做
pip --version
它说:
pip 0.3.1 from /usr/lib/python2.6/dist-packages (python 2.6)
当我做
whereis python
时,它给了我以下信息:
python: /usr/src/Python-2.7.10/python /usr/bin/python2.6 /usr/bin/python /etc/python2.6 /etc/python /usr/lib/python2.6 /usr/lib/python3.1 /usr/lib64/python2.6 /usr/lib64/python3.1 /usr/local/bin/python2.7-config /usr/local/bin/python /usr/local/bin/python2.7 /usr/local/lib/python2.6 /usr/local/lib/python2.7 /usr/include/python2.6 /usr/share/python /usr/share/man/man1/python.1.gz
如何安装 pysftp?
您需要为 Python 2.7 重新安装
pip
,然后运行pip2.7 install pysftp
。您需要为每个要使用它的 Python 版本安装pip
。 setuptools
包可能是最简单的开始方式;您只需运行以下命令即可一口气完成所有操作:
wget https://bootstrap.pypa.io/ez_setup.py -O --no-check-certificate - | sudo python2.7 && sudo easy_install-2.7 pip && sudo pip2.7 install pysftp
有时较旧的 Linux 安装会出现上述命令的问题,这是由于在通过
setuptools
下载完整的 ez_setup.py
包时遇到“无效”证书(有关更多详细信息,请参见此处)。这可以用这个替代的一次性命令来规避:
wget https://pypi.python.org/packages/source/s/setuptools/setuptools-18.8.1.zip --no-check-certificate && unzip setuptools-18.8.1.zip && cd setuptools-18.8.1 && sudo python setup.py install && sudo easy_install-2.7 pip && sudo pip2.7 install pysftp
我认为您需要使用代码安装某种“必需品包”
sudo apt-get install build-essential libssl-dev libffi-dev python-dev
然后就可以安装了:
sudo pip install pysftp
sudo pip install enum