"""
Histogram.py
Author: David Kauchak

Some functions for generating histogram-like data (text
only) using dictionaries from any iterable data (e.g.
lists or strings)
"""

def get_counts(data):
    """ Count how many times each item occurs in the
    sequence data"""
    counts = {}

    for d in data:
        if d in counts:
            counts[d] += 1
        else:
            counts[d] = 1
        
    return counts

def print_counts(counts):
    """print out the counts from a dictionary, tab delimited"""
    for k in counts:
        print str(k) + "\t" + str(counts[k])
                
def print_counts_sorted(counts):
    """print out the counts from the data, sorted by the keys"""
    
    counts_keys = counts.keys()
    counts_keys.sort()
    
    for key in counts_keys:
        print str(key) + "\t" + str(counts[key])