need help with the assigment..

[dpwl1000]

I inserted the below in my atom app and saved the file name as week2.py

import re

file = open('Sample_data.txt', 'r')

sum = 0

for line in file:

numbers = re.findall('[0-9]+', line)

for number in numbers:

sum = sum + int(number)

print (sum)

And then I put the below in my command prompt

-ommited the part of command-

C:\Users\cindy\OneDrive\바탕 화면\py4e>week2.py

Traceback (most recent call last):

File "C:\Users\cindy\OneDrive\바탕 화면\py4e\week2.py", line 3, in

file = open('Sample_data.txt', 'r')

FileNotFoundError: [Errno 2] No such file or directory: 'Sample_data.txt'

C:\Users\cindy\OneDrive\바탕 화면\py4e>

But I got the above error and I don't get what I did wrong in the process...

I did save the txt file as Sample-data.txt in the same file as week2.py file.

What do I have to change..?

I have tried changing the file name as regex_sum_42.txt instead of Sample_data.txt but it still doesnt work...