Code coach password validation

Question

Every outputs are correct even though there are 2 test cases are failed what is the reason?
user_input=input()
li1=[]
li2=[]
li3=[]
for i in user_input:
if 48<=ord(i)<=57:
li1.append(i)
elif 65<=ord(i)<=90 or 97<=ord(i)<=122:
li2.append(i)
else:
li3.append(i)
if len(user_input)>=7 and len(li1)>=2 and len(li3)==2:
print("Strong")
else:
print("Weak")

Answer 1

Why len(li3) == 2?

Try
len(li3) >=2

Answer 2

Where's your test for the defined special characters?

Answer 3

it will append in empty list li3