Sam Allen has posted a good walk through here, which explains how to use Python to read a comma separated list in a text file.
Starting with a text file like this one:
. . . the file can be opened in Python and then analyzed. First the open command is used to open the file:
>>> f = open(r"C:\FooFolder\python\animals.txt", "r")
Sam's script contains a small error. The r is omitted before the file path. At least in version 3.4.2 of Python this must be included to access the file.
readlines is used to read each line in the file:
>>> for line in f.readlines():
strip is used to take out whitespace: line = line.strip()
print displays the line: print(line)
split up each line: parts = line.split(",")
display each line indented: for part in parts: print(" ", part)
The end result is:
tigers,giraffes,lions,zebra,elephants,dogs,cats,gazelles tigers giraffes lions zebra elephants dogs cats gazelles >>>
The complete script looks like this in Python IDLE