Displaying multiple bar graph in django - django

Question

I am new to django and know little of python. I am learning to draw graphs in django framework. I drew single bar-charts but have problem to draw multiple bar-chart using the database telecom_db of my project in django. However, in wxPython the following code worked fine. Could you figure out if something wrong with django in code below:
def graph(request):
figName="figGraph.png"
path="F:\MajorWorkspace\Visualisations\\"+figName
if os.path.exists(path)==False:
age_gr = []
countm = []
countf = []
import MySQLdb
db = MySQLdb.connect(host = "localhost",
user="root",
passwd = "",
db = "telecom_db")
cursor1 = db.cursor()
cursor2 = db.cursor()
cursor1.execute("select count(card_no) from demo where gender = 0 group by age_group")
cursor2.execute("select count(card_no) from demo where gender = 1 group by age_group")
numrows1 = int(cursor1.rowcount)
#numrows2 = int(cursor2.rowcount)
sum_male=0
sum_female=0
for x in range(numrows1):
row1 = cursor1.fetchone()
age_gr.append(x)
countm.append(row1[0])
sum_male+=row1[0]
row2 = cursor2.fetchone()
countf.append(row2[0])
sum_female+=row2[0]
# avg_call_group[x] = row[1]
cursor1.close()
cursor2.close()
import numpy as np
import matplotlib.pyplot as plt
N = len(age_gr)
ind = np.arange(N) # the x locations for the groups
width = 0.35 # the width of the bars
fig = plt.figure()
ax = fig.add_subplot(111)
rects1 = ax.bar(ind, countf, width, color='b')
rects2 = ax.bar(ind+width, countm, width, color='r')
# add some
ax.set_ylabel('Scores')
ax.set_title('Age group and Gender-wise Subscriber Distribution')
ax.set_xticks(ind+width)
# \n0:under 16 \n 1:16-20 \n i(<-N):16+5i-20+5i (i<4) \n 5:35-40 \n 6:40-50 \n 7:50 over
ax.set_xticklabels(('Under 16','16-20','21-25','26-30','31-35','36-40','40-50','Above 50'))
ax.legend( (rects1[0], rects2[0]), ('male', 'female') )
def autolabel(rects,sex):
# attach some text labels
hf=0
hm=0
iter=0
for rect in rects:
height = rect.get_height()
if sex==0:
hf+=height
print 'Female'
print '\n Height='+str(height)+'\n Sum_female='+str(sum_female)
pf=(height*1.00/sum_female)*100.00
print pf
ax.text(rect.get_x()+rect.get_width()/2., 1.05*height, '%1.1f%%'%float(pf), ha='center', va='bottom')
iter+=1
else:
hm+=height
print 'Male'
print '\n Height='+str(height)+'\n Sum_male='+str(sum_male)
pm=(height*1.00/sum_male)*100.00
print pm
ax.text(rect.get_x()+rect.get_width()/2., 1.05*height, '%1.1f%%'%float(pm), ha='center', va='bottom')
autolabel(rects1,0)
autolabel(rects2,1)
fig.savefig(path)
image_data = open(path, "rb").read()
return HttpResponse(image_data, mimetype="image/png")