Matplotlib plot is a no-show


Question

When I run this code

import pandas as pd
import numpy as np
def add_prop(group):
    births = group.births.astype(float)
    group['prop'] = births/births.sum()
    return group

pieces = []
columns = ['name', 'sex', 'births']

for year in range(1880, 2012):
    path = 'yob%d.txt' % year
    frame = pd.read_csv(path, names = columns)
    frame['year'] = year
    pieces.append(frame)
    names = pd.concat(pieces, ignore_index = True)

total_births = names.pivot_table('births', rows = 'year', cols = 'sex', aggfunc = sum)
total_births.plot(title = 'Total Births by sex and year')

I get no plot. This is from Wes McKinney's book on using Python for data analysis. Can anyone point me in the right direction?

1
58
8/1/2017 7:07:10 PM

Accepted Answer

Put

import matplotlib.pyplot as plt

at the top, and

plt.show()

at the end.

164
5/13/2013 12:56:58 PM

In the IPython notebook you could also use %matplotlib inline at the top of the notebook to automatically display the created plots in the output cells.


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