不同版本中Python matplotlib.pyplot.draw()界面绘制异常问题的解决

$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get install python-dev
$ sudo apt-get install python-pip
$ sudo pip install --upgrade pip
$ sudo pip install --upgrade urllib3
$ sudo pip install numpy
$ sudo pip install matplotlib

import sys
import numpy as np
import matplotlib.pyplot as plt
 
plt.ion()
(fig, axis) = plt.subplots()
bar_plot = axis.barh(0, 8,linewidth = 0)
bar_plot.color= '#ffff00'
for i in range(20):
 axis.set_xlim(xmax = max(i + 1, 10))
 plt.draw()
 
if sys.version_info < (3, 0):
 raw_input("Press Enter to continue...")
else:
 input("Press Enter to continue...")

import sys
import numpy as np
import matplotlib.pyplot as plt
 
plt.ion()
(fig, axis) = plt.subplots()
bar_plot = axis.barh(0, 8,linewidth = 0)
bar_plot.color= '#ffff00'
for i in range(20):
 axis.set_xlim(xmax = max(i + 1, 10))
 plt.draw()
 plt.pause(0.00001)
 
if sys.version_info < (3, 0):
 raw_input("Press Enter to continue...")
else:
 input("Press Enter to continue...")

import matplotlib as mpl
print mpl.__version__