IOError: [Errno 2] No such file or directory (when it really exist) Python

Question

I'm working on transfer folder of files via uart in python. Below you see simple function, but there is a problem because I get error like in title : IOError: [Errno 2] No such file or directory: '1.jpg' where 1.jpg is one of the files in test folder. So it is quite strange because program know file name which for it doesn't exist ?! What I'm doing wrong ?

def send2():
    path = '/home/pi/Downloads/test/'
    arr = os.listdir(path)
    for x in arr:
        with open(x, 'rb') as fh:
            while True:
                # send in 1024byte parts
                chunk = fh.read(1024)
                if not chunk: break
                ser.write(chunk)

Answer 1

You need to provide the actual full path of the files you want to open if they are not in your working directory :

import os
def send2():
    path = '/home/pi/Downloads/test/'
    arr = os.listdir(path)
    for x in arr:
        xpath = os.path.join(path,x)
        with open(xpath, 'rb') as fh:
            while True:
                # send in 1024byte parts
                chunk = fh.read(1024)
                if not chunk: break
                ser.write(chunk)