Piping input into a python file using powershell

Hello I am trying to pipe the input from a data file as command line input using power shell.

I am using the command cat D:\Python\test-inputs.txt| python a3p1.py

The output should be outlying the process from the file. I am reading my stdin input with

while True:
    line = sys.stdin.readline()
    if not line:
        break
    words = line.split()
    for word in words:
        breakdown(database, word)

Can anyone help me