Project github address: bitcarmanlee easy-algorithm-interview-and practice
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PIP is a common Python package management tool, similar to Java’s Maven. If you use Python, you can’t do without PIP.
when trying to install PIP using home-brew on the new MAC, there were some minor problems:

bogon:~ wanglei$ brew install pip
Error: No available formula with the name "pip"
Homebrew provides pip via: `brew install python`. However you will then
have two Pythons installed on your Mac, so alternatively you can install
pip via the instructions at:

  https://pip.readthedocs.org/en/stable/installing/#install-pip

As you can see, PIP is installed with Python in home-BREW.
Another way:

bogon:~ wanglei$ sudo easy_install pip
Password:
Searching for pip
Reading https://pypi.python.org/simple/pip/
...

Just a moment, PIP is installed…