https://packages.ubuntu.com/trusty/postgresql-server-dev-9.3 所以使用下面的命令即可安装python-dev: yum install python-devel I just had to install this on my CentOS 6 server since psycopg2 required pg_config. Boo yah: yum install postgresql-devel Update If you sti…

最近项目不忙了~~有开始专研的python大业,上来想用pip安装一个第三方的库,就一直报错: Could not fetch URL https://pypi.org/simple/xrld/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/xrld/ (Cause…

[前提]: win10下python3和python2共存环境,但是环境变量只配置了python3 [问题]: 用pip安装一个包执行pip2 install xxx的时候报错Fatal error in launcher: Unable to create process using '"' 执行pip3 install xxx的时候报同样的错误Fatal error in launcher: Unable to create process using '"' [解决]:pytho…

使用python+xpath 获取https://pypi.python.org/pypi/lxml/2.3/的下载链接: 使用requests获取html后,分析html中的标签发现所需要的链接在<table class="list" >...</table> 中 然后分别获却<tr class="odd"> 和<tr class="even">中的内容 ,使用xpath时可以写成xpath('/…

HanLP - 汉语言处理包 http://hanlp.linrunsoft.com/doc.html https://pypi.python.org/pypi/sumy/…

pip install xxx -i https://pypi.tuna.tsinghua.edu.cn/simple 快速下载…

Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirmingthe ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(SSLError(1, u'[SSL: CERTIFICATE_VERIF…

这个就是相源的问题,正常安装你的根目录下会有这个pip.log文件,如下 root@liu:~# ll .pip/ total 16 drwxr-xr-x 2 root root 4096 Sep 1 23:06 ./ drwx------ 6 root root 4096 Sep 1 23:06 ../ -rw-r--r-- 1 root root 85 Sep 1 23:04 pip.conf 现在修改源,创建文件php.conf,内容如下 root@liu:~# cat .pip/pip.…

难题描述: 解决方法: 使用命令python -m pip install Scrapy  --trusted-host=pypi.python.org --trusted-host=pypi.org --trusted-host=files.pythonhosted.org,结果:成功…

Stackoverflow  : http://stackoverflow.com/questions/15501133/python-pip-error-cannot-fetch-index-base-url-https-pypi-python-org-simple…