Question

Plz use nested loops , read the question carefully, i need help step by step solution using ( spyder)..

Exercise 2 Write a Python program (Lab7-ex2.py) that reads from the user an integer n, displays the triangular number sequence up to the n term (ie. 1,3, 6, 10,. n"term). The triangular of a number n is calculated as "n(n+1)/2" where n is a nonzero positive number. Note that your program should display a suitable error message if n is entered as a zero or a negative number. n Triangular 4 10 5 15 Figure 2. Exercise 2 Sample Run for n-6

Answer 1

We need not use NESTED LOOPS for this problem. Only one Loop is sufficient. This is a simple problem where we use concepts like:

1. If-else conditions
2. for loop
3. print() function
4. how to create a function and call a function
5. How to use INTEGER DIVISION ( // )

I have made things clear in the source code and explained every line of code.

Please refer to the comments I provided in the source code. I have added the image of source code along with the test cases. ( Input and output ).

I have used SPYDER as you asked.

NOTE:

We take a//2 integer division to get the output in integer format. ex: 10//2==> 5 and 9//2=4

If we use a/2 we get a decimal format. ex: 10/2 ==> 5.0 and 9/2==>4.5=============================================================================

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