ipython linux下安装（Ubuntu 14.04LTS）

[更新]：sudo pip install ipython 解决问题 但是速度较慢

配置好更新源的apt-get更快

sudo apt-get install ipython

pip安装会出现

Exception:

Traceback (most recent call last):

  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main

    status = self.run(options, args)

  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 283, in run

    requirement_set.install(install_options, global_options, root=options.root_path)

  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1436, in install

    requirement.install(install_options, global_options, *args, **kwargs)

  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 672, in install

    self.move_wheel_files(self.source_dir, root=root)

  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 902, in move_wheel_files

    pycompile=self.pycompile,

  File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 206, in move_wheel_files

    clobber(source, lib_dir, True)

  File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 193, in clobber

    os.makedirs(destsubdir)

  File "/usr/lib/python2.7/os.py", line 157, in makedirs

    mkdir(name, mode)

OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/ipython-5.1.0.dist-info'

Storing debug log for failure in /home/neil-zhang/.pip/pip.log

sudo apt-get install ipython

则正确安装成功

ipython使用技巧

函数. 然后TAB 可以获得该函数的几种用法

 pa

Out[5]: re.compile(r'content')

In [6]: pa.

pa.findall     pa.groupindex  pa.pattern     pa.split       

pa.finditer    pa.groups      pa.scanner     pa.sub         

pa.flags       pa.match       pa.search      pa.subn