why am i getting name not defined

def face(target,key):
target=input('target')
key=input('key')
a=0
count=0
while a

Question

why am i getting name not defined

def  face(target,key):   
    target=input('target')
    key=input('key')
    a=0
    count=0
    while a<len(target):
        if key[:]=target[a:len(key)]:
            count+=1
        a+=1
    print count

anonymous · Answer

What are you looking for this program to do?

anonymous · Answer

Why are overwritten when you call the function, why make them required in the first place when they have no function?

anonymous · Answer

Please post the line that is giving you the error.