顯示pip安裝過后的包：

pip show --files SomePackage

也可以:pip list

2.注意pip 和pip3：
如果使用pip3安裝了包，比如:

sudo -H pip3 install openstacksdk 

pip3 show --files openstacksdk   # 使用pip3來show 
pip show --files openstacksdk  # 這個是查看不出來的

aircraftdeMacBook-Pro:etc ldl$ pip3 show --files openstacksdk
---
Metadata-Version: 2.0
Name: openstacksdk
Version: 0.9.17
Summary: An SDK for building applications to work with OpenStack
Home-page: http://developer.openstack.org/sdks/python/openstacksdk/
Author: OpenStack
Author-email: openstack-dev@lists.openstack.org
Installer: pip
License: UNKNOWN
Location: /Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages
Requires: stevedore, pbr, deprecation, six, os-client-config, keystoneauth1, jsonpatch
Classifiers:
  Environment :: OpenStack
  Intended Audience :: Information Technology
  Intended Audience :: System Administrators
  License :: OSI Approved :: Apache Software License
  Operating System :: POSIX :: Linux
  Programming Language :: Python
  Programming Language :: Python :: 2
  Programming Language :: Python :: 2.7
  Programming Language :: Python :: 3
  Programming Language :: Python :: 3.3
  Programming Language :: Python :: 3.5
Files:
  openstack/__init__.py
  openstack/__pycache__/__init__.cpython-35.pyc
  openstack/__pycache__/connection.cpython-35.pyc
  openstack/__pycache__/exceptions.cpython-35.pyc
  openstack/__pycache__/format.cpython-35.pyc

3.pip安裝包之后包的位置是在python的site-packages/目錄下：

aircraftdeMacBook-Pro:etc ldl$ sudo find / -name openstack
Password:
find: /dev/fd/etc: No such file or directory
find: /dev/fd/etc: No such file or directory
/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/openstack

4.pip查看安裝了哪些包：

pip freeze

5.pip升級自己
python會自動卸載以前的舊版本，并下載安裝新版本。

python -m pip install --upgrade pip