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19 def freq_counter(lst): 20 c = Counter() 21 22 for i in lst: 23 c[i] += 1 24 25 return c
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34 def _count(lst): 35 out = {} 36 for l in lst: 37 out[l] = out.setdefault(l, 0) + 1 38 39 return out
231 def items_by_frequency(freqdist): 232 """Sort a dictionary by frequency. Return as a list of pairs. 233 """ 234 frequency = lambda x: x[1] 235 return sorted(iter(list(freqdist.items())), key=frequency, reverse=True)