<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Given an integer, calculate the sum of the numbers till that number.
num = 7<|im_end|>
<|im_start|>assistant
# set the sum to 0
sum = 0

# loop from 1 to 7
for i in range(1, num+1):
   # add each number to "sum"
   sum += i

# print the sum
print(sum)
28<|im_end|>
