Accumulator using For Loop in Python

Question

I want to create a program that will take the user input for a positive integer number value and it should loop to get the total of all integers from 1 up to the entered number. 

Below is my code, but this will also take a negative number, but I don't want to, kindly help:

x=int(input("Please pick a positive integer"))

sum=0

for i in range(1,x):

    sum=sum+1

    print(sum)

else:

    x=int(input("Please pick a positive integer"))

Answer 1

See, for taking only positive numbers, you can have the if-else condition like you can only proceed with the program, when the number is positive, refer to the below code:

def intpicker():

        x=int(input("Please pick a positive integer"))

        sum=0

        if x >= 0:

            for i in range(1,x):

                sum=sum+i

            print(sum)

        else:

            return intpicker()

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