在安裝python的每三方模塊、工具時很有用，也很方便。
安裝setuptools前先安裝pip，請參考：linux中pip安裝步驟與使用詳解
1. 下載:
在它的官網可以下載到安裝包:
https://pypi.python.org/pypi/setuptools
頁面最下面的是它的安裝鏈接,如:
$wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-12.0.3.tar.gz#md5=f07e4b0f4c1c9368fcd980d888b29a65
2. 安裝
$ tar -zxvf setuptools-12.0.3.tar.gz
$ cd setuptools=12.0.3
$ python setup.py install
3. 出現錯誤提示:
Installed /usr/local/python2.7.3/lib/python2.7/site-packages/supervisor-4.0.0_dev-py2.7.egg
Processing dependencies for supervisor==4.0.0-dev
Searching for meld3>=1.0.0
Reading https://pypi.python.org/simple/meld3/
Download error on https://pypi.python.org/simple/meld3/: [Errno 1] _ssl.c:504: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed -- Some packages may not be found!
Couldn't find index page for 'meld3' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
Download error on https://pypi.python.org/simple/: [Errno 1] _ssl.c:504: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed -- Some packages may not be found!
No local packages or download links found for meld3>=1.0.0
error: Could not find suitable distribution for Requirement.parse('meld3>=1.0.0')
解決辦法:
上網查詢了問題原因： 是curl的證書太老了需要下載最新的證書：
下載最新的證書文件 、
$ wget http://curl.haxx.se/ca/cacert.pem
更名爲ca-bundle.crt放置到默認目錄
$ mv cacert.pem ca-bundle.crt
$ mv ca-bundle.crt /etc/pki/tls/certs
原文鏈接：點擊打開鏈接