Python Dictionary Output

def gra(a):

    return

def num(b):

    return


dic={} 

while True:

    c=int(input('Select a menu number>>'))

    if c==1:
        for i in range(10):
            print()
            b=int('[%d]th grade<Terminal<Negative>>: '%(i+1))))
            if b<=0:
                print()
                break
            else:
                print()
                a=int (input('Please enter your grade for PL subject'))
                dic[b]=a
                num(b)
                gra(a)
                print(dic)

    elif c==2:
        print()
        num=input('Input your number: ')
        if num in dic.keys() ==True:
            print('##################################################')
            print ('# : Subject name: PL #')
            print('# Class:----------------------------------#')
            print('# : Score #')
            print('#------------------------------------------------#')
            print('# %s:             %d                      #'%(c,dic.get(num)))
            print('##################################################')

After doing this, I did it 

Select a menu number>>1

[1]First class number<Termination condition<negative>>: 123456

 Please enter your grade for the PL course67

{123456: 67}

[2]First class <Termination condition<negative>>: -1

Select a menu number>>2

Input your number: 123456

Select a menu number>>

As it runs like this, I chose menu 2 and entered the matching school number, but the grades are not printed

Why isn't the report card printed and the menu execution statement appears?