Write a Python program using a function called sum_range that accepts two integer numbers, a, and b (assume that b > a), entered by the user and returns the sum of numbers from a to b. For example, if a = 5 and b = 10, then the function returns 45 (that is 5 + 6 + 7 + 8 + 9 + 10 = 45). Use for loop to calculate the sum in the function. Assume that the user does enter invalid inputs.

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Sample Run:

Enter number 1: 5

Enter number 2: 10

Sum of numbers from 5 to 10 = 45