无法安装Python包

Question

我是CentOS的新手,我正在尝试在其上安装M2Crypto Python软件包.

我跑了:

sudo python setup.py install

它似乎没问题:(这是输出的结束)

removing 'build/bdist.linux-i686/egg' (and everything under it)
Processing M2Crypto-0.20.2-py2.4-linux-i686.egg
Removing /usr/lib/python2.4/site-packages/M2Crypto-0.20.2-py2.4-linux-i686.egg
Copying M2Crypto-0.20.2-py2.4-linux-i686.egg to /usr/lib/python2.4/site-packages
M2Crypto 0.20.2 is already the active version in easy-install.pth

Installed /usr/lib/python2.4/site-packages/M2Crypto-0.20.2-py2.4-linux-i686.egg
Processing dependencies for M2Crypto==0.20.2

但是我无法导入M2Crypto:

$ python
Python 2.4.3 (#1, Nov 11 2010, 13:34:43) 
[GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import M2Crypto
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "M2Crypto/__init__.py", line 22, in ?
import __m2crypto
ImportError: No module named __m2crypto
>>> 

我究竟做错了什么？

Answer 1

我跑了:

python setup.py tests

并修复了它.它复制了一些文件,我认为这会导致lib放在正确的位置.

running test
running egg_info
writing M2Crypto.egg-info/PKG-INFO
writing top-level names to M2Crypto.egg-info/top_level.txt
writing dependency_links to M2Crypto.egg-info/dependency_links.txt
reading manifest file 'M2Crypto.egg-info/SOURCES.txt'
writing manifest file 'M2Crypto.egg-info/SOURCES.txt'
running build_ext
copying build/lib.linux-i686-2.4/M2Crypto/__m2crypto.so -> M2Crypto
test_BitSTring (tests.test_asn1.ASN1TestCase) ... ok
.
.
.

Answer 2

我在安装 python 模块时偶尔会发生这种情况。我做了几件事来解决这个问题：

1. 有时这是因为您从未设置 PYTHONPATH。尝试：

   setenv PYTHONPATH /usr/lib/python2.4/site-packages:$PYTHONPATH

2. 有时是因为 /usr/lib 中找到了共享库，您必须执行：

setenv LD_LIBRARY_PATH /usr/lib:$LD_LIBRARY_PATH

让我知道这对你来说怎么样。大多数时候只是因为你没有正确设置python路径。