Can you please explain why it prints this way

Question

I wrote a code trying to print fibonacci numbers it worked but now i want to separate the numbers with a comma and print it all on the same line
can you please explain why this doesn't work
Thank you

num=eval(input("how many Fibonacci numbers do you want? "))
a=0
b=1
print(a,b, sep=",")
for i in range(num):
c = a + b
a = b
b = c
print(c, sep=",")

OUTPUT with 12
how many Fibonacci numbers do you want? 12
0,1
1
2
3
5
8
13
21
34
55
89
144
233

Answer 1

You should print value of b variable instead of c variable.

print(b, sep=", ")

Try this.

Answer 2

I tried print(b, sep=", ") but it doesnt still work