如果您的系统默认使用python2，使用下面的命令将包安装到python3

$ python3 -m PIP install <package-name>

安装最新的pip2/pip3及相应软件包的最简单方法:

curl https://bootstrap.pypa.io/get-pip.py | python2
pip2 install package-name    

curl https://bootstrap.pypa.io/get-pip.py | python3
pip3 install package-name

注意:请以root用户运行这些命令

老问题了，但没有一个答案能让我满意。我的一个系统运行的是Ubuntu 12.04 LTS，由于某种原因，Python 3没有python3-pip或Python -pip包。下面是我所做的(所有命令都以root身份执行):

Install setuptools for Python3 in case you haven't. apt-get install python3-setuptools or aptitude install python3-setuptools With Python 2.4+ you can invoke easy_install with specific Python version by using python -m easy_install. So pip for Python 3 could be installed by: python3 -m easy_install pip That's it, you got pip for Python 3. Now just invoke pip with the specific version of Python to install package for Python 3. For example, with Python 3.2 installed on my system, I used: pip-3.2 install [package]

直接执行pip二进制文件。

首先找到您想要的PIP版本。

jon-mint python3.3 # whereis ip
ip: /bin/ip /sbin/ip /usr/share/man/man8/ip.8.gz /usr/share/man/man7/ip.7.gz

然后执行。

jon-mint python3.3 # pip3.3 install pexpect
Downloading/unpacking pexpect
  Downloading pexpect-3.2.tar.gz (131kB): 131kB downloaded
  Running setup.py (path:/tmp/pip_build_root/pexpect/setup.py) egg_info for package pexpect

Installing collected packages: pexpect
  Running setup.py install for pexpect

Successfully installed pexpect
Cleaning up...

你也可以运行pip3 install packagename而不是pip，

安装python3的另一种方法是使用wget。下面是安装步骤。

wget http://www.python.org/ftp/python/3.3.5/Python-3.3.5.tar.xz
tar xJf ./Python-3.3.5.tar.xz
cd ./Python-3.3.5
./configure --prefix=/opt/python3.3
make && sudo make install

此外，还可以为相同的用途创建别名

echo 'alias py="/opt/python3.3/bin/python3.3"' >> ~/.bashrc

现在打开一个新终端，输入py并按Enter。