Why is my nested for loop ending early? (python)

Question

first_name = input("Please enter your first name: ").capitalize()
start_inner = int(input("Hi {}, please enter the start value for the inner 
loop: ".format(first_name)))
end_inner = int(input("Please enter the end value for the inner loop: "))
start_outer = int(input("Please enter the start value for the outer loop: "))
end_outer = int(input("Please enter the end value for the outer loop: "))
for outer in range(start_outer, end_outer):
    for inner in range(start_inner, end_inner):
        print("{:^2} {:^2}".format(outer, inner))

If I were to put 1(start_inner), 3(end_inner), 1(start_outer), 2(end_outer)

I should get:

Instead i get:

1 1
1 2

Any help is appreciated thanks.

The end of a range is not inclusive (exclusive). range(1, 3) will yield (1, 2) — Moberg
– Moberg, Commented Aug 30, 2018 at 9:53
Possible duplicate of Why are slice and range upper-bound exclusive? — U13-Forward
– U13-Forward, Commented Aug 30, 2018 at 9:59

Cut7er · Accepted Answer · 2018-08-30 09:53:03Z

1

pythons range(1,5) is non-inclusive for the end-term - meaning it will only loop from 1 to 4. Read more regarding this topic here :-)

answered Aug 30, 2018 at 9:53

Cut7er

1,2379 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

U13-Forward · Accepted Answer · 2018-08-30 09:55:41Z

1

@Cut7er is right, but here is he solution:

...
for outer in range(start_outer, end_outer+1):
    for inner in range(start_inner, end_inner+1):
        print("{:^2} {:^2}".format(outer, inner))

My Explanation:

range includes first value
range excludes second value

See: this

answered Aug 30, 2018 at 9:55

U13-Forward

71.8k15 gold badges100 silver badges125 bronze badges

Collectives™ on Stack Overflow

Why is my nested for loop ending early? (python)

2 Answers 2

Comments

My Explanation:

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

My Explanation:

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related