dynamic pie chart


I’m new using matplotlib and i’m using pie-chart demo to do a dynamic chart.

in this code sample i’m trying to map a DIR content to the chart labels but I’m getting an Assert error

File “pie_demo.py”, line 34, in

pie(fracs, explode=explode, labels=line.strip(), autopct=’%1.1f%%’, shadow=True)

File “/usr/lib/pymodules/python2.7/matplotlib/pyplot.py”, line 2268, in pie

ret = ax.pie(x, explode, labels, colors, autopct, pctdistance, shadow, labeldistance)

File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 4938, in pie



This is the code I’m using.


Requires matplotlib0-0.70 or later


import os

import subprocess

from pylab import *

figure(1, figsize=(6,6))

ax = axes([0.1, 0.1, 0.8, 0.8])

labels = ‘Ex1’, ‘Ex2’, ‘Ex3’, ‘Ex4’

f = os.popen(‘ls ~/DIR’)

for line in f.readlines():

labels = line.strip()


fracs = [15,30,45, 10]

explode=(0, 0.05, 0, 0)

pie(fracs, explode=explode, labels=labels, autopct=’%1.1f%%’, shadow=True)

title(‘Example’, bbox={‘facecolor’:‘0.8’, ‘pad’:5})


Thanks in advance for any pointers.