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import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
print(pd.__version__)
import random


    

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arrays = [['bar', 'bar', 'baz', 'baz', 'foo', 'foo', 'qux', 'qux'],
              ['one', 'two', 'one', 'two', 'one', 'two', 'one', 'two']]
tuples = list(zip(*arrays))
index = pd.MultiIndex.from_tuples(tuples, names=['first', 'second'])
s = pd.DataFrame({'RowCount':0}, index=index)


    

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s['RowCount'] = s.apply(axis=1, func=lambda row: random.randint(100,1000))


    

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s


    

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s.query("second == 'two'")


    

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