Python Recursive Function Add Numbers

# Write a recursive function to add numbers
# from 1 to 10 recursively. Call it from
# main function

def add_recursive(num):
    if num==0:
        return 0
    else:
        # function calls it self again by decrementing number by 1
        return num + add_recursive(num - 1)
    
# Call function from main 
res = add_recursive(10)
print("Sum =",res)