Question

3个元素=字典中的3个键 2个元素=字典中的2个键

当试图显示2个元素时，一切正常。当用3尝试相同的事情时，没有任何事情发生（图片不会生成）

from pylab import *
binNames_tuple = ()
binResult_list  = []
dic = {'7.2': '2', '7.1': '1', '7.3': '3'}
for item in dic:
    #append to tuple  ( labels for the pi chart)
    binNames_tuple = binNames_tuple + (item,)
    #append to list (the results to display )
    binResult_list.append(dic[item])



print binResult_list
print binNames_tuple

mycolors=['#9d1507', '#71c42c','#0099cc']

try :
    figure(1, figsize=(3, 3), dpi=70,)
    ax = axes([0.1, 0.1, 0.8, 0.8])

    # The slices will be ordered and plotted counter-clockwise.
    fracs = binResult_list
    explode=(0, 0)

    pie(fracs, explode=explode,labels = binNames_tuple , autopct='%1.1f%%', shadow=True, startangle=90,colors=mycolors)
    savefig(('abcd.png'), transparent=True)
    close()
except Exception as e : 
    print str (e)

Answer 1

您的尝试，除了语句无法引发断言错误assert(len(x)==len(explode))。在您的示例中，explode列的大小应与dict相同，例如

from pylab import *
binNames_tuple = ()
binResult_list  = []
dic = {'7.2': '2', '7.1': '1', '7.3': '3'}
for item in dic:
    #append to tuple  ( labels for the pi chart)
    binNames_tuple = binNames_tuple + (item,)
    #append to list (the results to display )
    binResult_list.append(dic[item])



print binResult_list
print binNames_tuple

mycolors=['#9d1507', '#71c42c','#0099cc']

try :
    figure(1, figsize=(3, 3), dpi=70,)
    ax = axes([0.1, 0.1, 0.8, 0.8])

    # The slices will be ordered and plotted counter-clockwise.
    fracs = binResult_list
    explode=(0, 0, 0)

    pie(fracs, explode=explode,labels = binNames_tuple , autopct='%1.1f%%', shadow=True, startangle=90,colors=mycolors)
    savefig(('abcd.png'), transparent=True)
    close()
except Exception as e : 
    print str (e)   
    raise

请注意，这会将脚本abcd.png保存在脚本目录中。如果您想要显示图片，则应使用plt.show()。

Pylab Piechart显示3个元素

1 个答案: