Histogram using pandas dataframe not showing proper output

[ift38375]

I am doing coding in script mode :

import pandas as pd
ontutD = {'Tutor': ['Tahira','Gagan','Anusha','Jacob','venkat',
                    'Tahira','Gagan','Anusha','Jacob','venkat',
                    'Tahira','Gagan','Anusha','Jacob','venkat',
                    'Tahira','Gagan','Anusha','Jacob','venkat'],
          'Classes' : [28,36,41,32,40,36,40,36,40,46,24,30,44,40,32,36,32,36,42,38],
          'Quarter' : [1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,4,4,4,4,4],
          'Country' : [ 'USA','UK','Japan','USA','Brazil','USA','USA','Japan',
                        'Brazil','USA','Brazil','USA','UK','Brazil','USA','Japan',
                        'Japan','Brazil','UK','USA']
          }
df1 = pd.DataFrame(ontutD)
ks = df1.hist(column='Classes')

print (ks)

but it is showing some message in output window without viewing graphical histogram.

Output:
[[<matplotlib.axes._subplots.AxesSubplot object at 0x06B0E9D0>]]

why it is not showing graphical histogram in output ?

[scidam]

You need to call matplotlib's show function, e.g.

import matplotlib.pyplot as plt
plt.show() # call this function after the hist was created.