matplotlib 쓰면서 python 문법 좀 더

Using global variables in a function other than the one that created them

Passing a dictionary to a function in python as keyword parameters

null object in Python?

None

Delete an element from a dictionary

del d[key]

python histogram one-liner

from collections import Countercnt = Counter("abracadabra")

How to sort Counter by value? - python

>>> Counter('abracadabra').most_common(3)[('a', 5), ('r', 2), ('b', 2)]

Re-initialize the plot in pylab

plt.hold(False)

하지만, chart 영역 크기는 안 tight해지는 것 같다.

Save plot to image file instead of displaying it using Matplotlib (so it can be used in batch scripts for example)

savefig('foo.png')