cannot find file

[landlord1984]

I am learning loading files by open().
I am sure I placed my text file in the same folder with my scripts.
But still get error:No such file or directory

I am using Python 3.5 with Eclipse.

Thanks,

L

---

import matplotlib.pyplot as plt
import csv

x = []
y = []

with open('example.txt','r') as csvfile:
    plots = csv.reader(csvfile, delimiter=',')

Above is my code