For loops with multiple arguments

Question

So i want to combine for i in blah and for j in blahblah how to i do it?

Answer 1

Do you want to create nested loop?
for i in range(10):
for j in range (20):
print(i +" " +j +",")
out:
1 1, 1 2, ...,1 20,
2 1, 2 2,..., 2 20
...
10 1,...

Answer 2

for i in blah:
for j in blahblah:
print(i,j)