building a list (help)

Question

#building a list
print("Enter number of courses, please: ")
len=input()
i=0
b=[]
print("enter all the grades: ")
while True:
x=input()
b.append(x)
if i==int(len):
break
i+=1

print(b)

What’s wrong With my code?
It writes that there is a problem in line 7

Answer 1

You're code asks for one more than you enter at the beggining. eg. when you enter 3, it expects 4 values.

i would try a for loop, or set what i call a "loop switch".

eg:
for i in range(int(len)):
x = input()
...

#OR

RUNNING = True
while(RUNNING):
x = input()
...
if <stop condition>:
RUNNING = False

Answer 2

thanks ,actually i found that the problem was in i==len ......should be i==int(len)-1:
because i was compered to str value of len