python中的输出未达到预期

Question

Not getting an expected output as compared to actual output. Although the counter here has been placed outside the loop. Here Marks are printed every after the Righ t Wrong. I want that it should get printed only once that is at the end. I have written it already outside the if loop

resp = {}
ansdb = {}
counter = 0

for i in range(1, 10):
    resp_i = form.getvalue('opt_%d' %i, '0')
    resp[i] = int(resp_i)

print "<br>"


for row in prsnobj.result:
    ansdb[int(row[0])] = int(row[1])

print "<br>"

for i in range(1, len(resp)+1):

    if resp[i] == ansdb[i]:
        print "<br>Right"
        counter += 1

   else:
       print "<br>Wrong"

   print "Marks:", counter

Actual Output:

Right Marks: 1
Right Marks: 2
Wrong Marks: 2
Right Marks: 3
Right Marks: 4 

Expected:

Right 
Right 
Wrong 
Right
Right 
Marks: 4

Answer 1

The last line:

print "Marks:", counter

is inside the for loop, so just correct it, and it should work:

resp = {}
ansdb = {}
counter = 0

for i in range(1, 10):
    resp_i = form.getvalue('opt_%d' %i, '0')
    resp[i] = int(resp_i)

print "<br>"

for row in prsnobj.result:
    ansdb[int(row[0])] = int(row[1])

print "<br>"

for i in range(1, len(resp)+1):

    if resp[i] == ansdb[i]:
        print "<br>Right"
        counter += 1
    else:
        print "<br>Wrong"

print "Marks:", counter

Answer 2

将此行移出循环范围。

print "Marks:", counter

Answer 3

Write the last print statement outside the for loop. Something like this:

resp = {}
ansdb = {}
counter = 0

for i in range(1, 10):
    resp_i = form.getvalue('opt_%d' %i, '0')
    resp[i] = int(resp_i)

print "<br>"


for row in prsnobj.result:
    ansdb[int(row[0])] = int(row[1])

print "<br>"

for i in range(1, len(resp)+1):

    if resp[i] == ansdb[i]:
        print "<br>Right"
        counter += 1

  else:
       print "<br>Wrong"

print "Marks:", counter

Answer 4

I tested this and it works correctly:

resp = {}
ansdb = {}
counter = 0

for i in range(1, 10):
    resp_i = form.getvalue('opt_%d' %i, '0')
    resp[i] = int(resp_i)

print "<br>"


for row in prsnobj.result:
    ansdb[int(row[0])] = int(row[1])

print "<br>"

for i in range(1, len(resp)+1):
    if resp[i] == ansdb[i]:
        print "<br>Right"
        counter += 1
    else:
        print "<br>Wrong"

print "Marks:", counter