Using Counter() in Python to build histogram?
Question: I saw on another question that I could use `Counter()` to count the number of
occurrences in a set of strings. So if I have `['A','B','A','C','A','A']` I
get `Counter({'A':3,'B':1,'C':1})`. But now, how can I use that information to
build a histogram for example?


Answer: For your data it is probably better to use a barchart instead of a histogram.
Check out this code:

    
    
    from collections import Counter
    import numpy as np
    import matplotlib.pyplot as plt
    
    
    labels, values = zip(*Counter(['A','B','A','C','A','A']).items())
    
    indexes = np.arange(len(labels))
    width = 1
    
    plt.bar(indexes, values, width)
    plt.xticks(indexes + width * 0.5, labels)
    plt.show()
    

Result: ![enter image description here](http://i.stack.imgur.com/0ZQq9.png)

