Which Python libraries make you brief encounter?

Canopy:downloads-enthought Scientific Computing Solutions
One-click installation of Python data analysis development platform, pre-set core scientific analysis library such as: SciPy, NumPy,. Pandas, Matplotlib, Ipython and so on. This software has a free version and several different paid editions, the personal feel that the free version enough to use, the main concern is his integrated library, do not need to install their own one.

Plus a few of their own in use, feel very good, there are a lot of people have mentioned.
lxml, previously used beautiful soup, later through scrapy contact to lxml, better than soup more than a little. Some of the ways to use PIP install may be wrong, in short I was wrong (under Windows), to http://www. Lfd.uci.edu/~gohlke/pythonlibs/ , download the. whl file, install it locally. In addition, this site a lot of libraries.
Scrapy, spiders don't say much.
Requests, more useful than urllib2.
Jieba, feel the best use of Chinese participle
Selenium, test or browser post
Redis, need to install Redis server?

Which Python libraries make you brief encounter?