安装pip3遇到的坑，顺便安装you-get

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$curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
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  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
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                                 Dload  Upload   Total   Spent    Left  Speed
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100 1669k  100 1669k    0     0   450k      0  0:00:03  0:00:03 --:--:--  449k

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$sudo python3 get-pip.py
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Collecting pip
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  Downloading https://files.pythonhosted.org/packages/f9/fb/863012b13912709c13cf5cfdbfb304fa6c727659d6290438e1a88df9d848/pip-19.1-py2.py3-none-any.whl (1.4MB)
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     |████████████████████████████████| 1.4MB 101kB/s
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Collecting setuptools
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  Downloading https://files.pythonhosted.org/packages/ec/51/f45cea425fd5cb0b0380f5b0f048ebc1da5b417e48d304838c02d6288a1e/setuptools-41.0.1-py2.py3-none-any.whl (575kB)
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     |████████████████████████████████| 583kB 107kB/s
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Collecting wheel
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  Downloading https://files.pythonhosted.org/packages/96/ba/a4702cbb6a3a485239fbe9525443446203f00771af9ac000fa3ef2788201/wheel-0.33.1-py2.py3-none-any.whl
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Installing collected packages: pip, setuptools, wheel
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Successfully installed pip-19.1 setuptools-41.0.1 wheel-0.33.1

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$pip3 --version
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pip 19.1 from /usr/local/lib/python3.6/dist-packages/pip (python 3.6)

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$sudo pip3 install you-get
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Collecting you-get
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  Downloading https://files.pythonhosted.org/packages/dd/3e/fb3d8b4070ffdd55c108508f23f5ca2cbb41ec5f17f86b0f207dc1bd5f5b/you_get-0.4.1295-py3-none-any.whl (206kB)
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     |████████████████████████████████| 215kB 315kB/s
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Installing collected packages: you-get
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Successfully installed you-get-0.4.1295