Pip 1.3现在也有一个列表命令:

$ pip list
argparse (1.2.1)
pip (1.5.1)
setuptools (2.1)
wsgiref (0.1.2)

我刚刚在pip中发送了一个增强的拉请求Hugo Tavares说:

(以云为例)

$ pip show specloud

Package: specloud
Version: 0.4.4
Requires:
nose
figleaf
pinocchio

Pip 1.3现在也有一个列表命令:

$ pip list
argparse (1.2.1)
pip (1.5.1)
setuptools (2.1)
wsgiref (0.1.2)

你也可以安装蛋黄，然后运行蛋黄-l，这也会得到一些不错的输出。以下是我为我的小virtualenv得到的:

(venv)CWD> /space/vhosts/pyramid.xcode.com/venv/build/unittest 
project@pyramid 43> yolk -l
Chameleon       - 2.8.2        - active 
Jinja2          - 2.6          - active 
Mako            - 0.7.0        - active 
MarkupSafe      - 0.15         - active 
PasteDeploy     - 1.5.0        - active 
Pygments        - 1.5          - active 
Python          - 2.7.3        - active development (/usr/lib/python2.7/lib-dynload)
SQLAlchemy      - 0.7.6        - active 
WebOb           - 1.2b3        - active 
account         - 0.0          - active development (/space/vhosts/pyramid.xcode.com/project/account)
distribute      - 0.6.19       - active 
egenix-mx-base  - 3.2.3        - active 
ipython         - 0.12         - active 
logilab-astng   - 0.23.1       - active 
logilab-common  - 0.57.1       - active 
nose            - 1.1.2        - active 
pbkdf2          - 1.3          - active 
pip             - 1.0.2        - active 
pyScss          - 1.1.3        - active 
pycrypto        - 2.5          - active 
pylint          - 0.25.1       - active 
pyramid-debugtoolbar - 1.0.1        - active 
pyramid-tm      - 0.4          - active 
pyramid         - 1.3          - active 
repoze.lru      - 0.5          - active 
simplejson      - 2.5.0        - active 
transaction     - 1.2.0        - active 
translationstring - 1.1          - active 
venusian        - 1.0a3        - active 
waitress        - 0.8.1        - active 
wsgiref         - 0.1.2        - active development (/usr/lib/python2.7)
yolk            - 0.4.3        - active 
zope.deprecation - 3.5.1        - active 
zope.interface  - 3.8.0        - active 
zope.sqlalchemy - 0.7          - active 

最简单的方法是:

import jinja2
print jinja2.__version__

还有一个叫做pip-check的工具，它可以让你快速浏览所有安装的包及其更新状态:

我自己没用过;只是偶然发现了这个SO问题，因为它没有被提及……