Flup提供三组WSGI服务器/网关，它们使用AJP 1.3，FastCGI和SCGI。每个服务器有两种风格：线程版本和分叉版本。目前最新版本：1.0.3.dev20161029。
执行easy_install ReviewBoard命令时，报error: Could not find suitable distribution for Requirement.parse('flup')错误信息，具体日志如下：
[root@localhost reviewboard]# easy_install ReviewBoard
Searching for ReviewBoard
Best match: ReviewBoard 1.6
Processing ReviewBoard-1.6-py2.6.egg
ReviewBoard 1.6 is already the active version in easy-install.pth
Installing rb-site script to /usr/bin
Installing rbssh script to /usr/bin
Using /usr/lib/python2.6/site-packages/ReviewBoard-1.6-py2.6.egg
Processing dependencies for ReviewBoard
Searching for pytz
Reading http://downloads.reviewboard.org/mirror/
Download error: [Errno -2] Name or service not known -- Some packages may not be found!
Reading http://downloads.reviewboard.org/releases/ReviewBoard/1.6/
Reading http://pypi.python.org/simple/pytz/
Download error: [Errno -2] Name or service not known -- Some packages may not be found!
Reading http://pypi.python.org/simple/pytz/
Best match: pytz 2016.10
Downloading https://pypi.python.org/packages/bb/a3/98ce49fa2d3e1bd58a247683cb8354be8fefe2a9c88fed4a2346781888ce/pytz-2016.10-py2.6.egg#md5=57c34cc6419a0711d33c253d78474b93
Processing pytz-2016.10-py2.6.egg
creating /usr/lib/python2.6/site-packages/pytz-2016.10-py2.6.egg
Extracting pytz-2016.10-py2.6.egg to /usr/lib/python2.6/site-packages
Adding pytz 2016.10 to easy-install.pth file
Installed /usr/lib/python2.6/site-packages/pytz-2016.10-py2.6.egg
Searching for python-dateutil==1.5
Reading http://pypi.python.org/simple/python-dateutil/
Best match: python-dateutil 1.5
Downloading https://pypi.python.org/packages/b4/7c/df59c89a753eb33c7c44e1dd42de0e9bc2ccdd5a4d576e0bfad97cc280cb/python-dateutil-1.5.tar.gz#md5=0dcb1de5e5cad69490a3b6ab63f0cfa5
Processing python-dateutil-1.5.tar.gz
Running python-dateutil-1.5/setup.py -q bdist_egg --dist-dir /tmp/easy_install-TVMoer/python-dateutil-1.5/egg-dist-tmp-9Wi80g
Adding python-dateutil 1.5 to easy-install.pth file
Installed /usr/lib/python2.6/site-packages/python_dateutil-1.5-py2.6.egg
Searching for paramiko>=1.7.6
Reading http://pypi.python.org/simple/paramiko/
Best match: paramiko 2.1.2
Downloading https://pypi.python.org/packages/64/79/5e8baeedb6baf1d5879efa8cd012f801efc232e56a068550ba00d7e82625/paramiko-2.1.2.tar.gz#md5=41a8ea0e8abb03a6bf59870670d4f46c
Processing paramiko-2.1.2.tar.gz
Running paramiko-2.1.2/setup.py -q bdist_egg --dist-dir /tmp/easy_install-WKdNtY/paramiko-2.1.2/egg-dist-tmp-DFxYhS
zip_safe flag not set; analyzing archive contents...
Adding paramiko 2.1.2 to easy-install.pth file
Installed /usr/lib/python2.6/site-packages/paramiko-2.1.2-py2.6.egg
Searching for flup
Reading http://pypi.python.org/simple/flup/
Download error: [Errno -2] Name or service not known -- Some packages may not be found!
Reading http://pypi.python.org/simple/flup/
Download error: [Errno -2] Name or service not known -- Some packages may not be found!
Couldn't find index page for 'flup' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://pypi.python.org/simple/
Download error: [Errno -2] Name or service not known -- Some packages may not be found!
No local packages or download links found for flup
error: Could not find suitable distribution for Requirement.parse('flup')
解决分析：
缺少 flup 和 distribute 插件导致Could not find suitable distribution for Requirement.parse('flup')错误
下载地址：https://pypi.python.org/pypi/flup/1.0 flup-1.0.tar.gz
下载地址：https://pypi.python.org/pypi/distribute/0.7.3 distribute-0.7.3.zip
解决方法：
解压下载后的文件，之后切换到distribute-0.7.3目录下，执行安装命令python setup.py install，具体如下：
[root@localhost reviewboard]# cd distribute-0.7.3/ [root@localhost distribute-0.7.3]# python setup.py install
重新执行 easy_install ReviewBoard 命令即可。
