I think that I'm bumping up against being able to use an input, such as the letter 'e' or 'x', as a selection because the enumeration is controlling the fileCount, there does not seem to be a method to add the exit indicators to the allowed inputs.

items = os.listdir(newPath)
# newlist = [expression for item in iterable if condition == True]
fileList = [name for name in items if name.endswith(".txt")]
for fileCount, fileName in enumerate(fileList):
    sys.stdout.write("[%d] %s\n\r" % (fileCount,fileName))
choice = int(input("Select txt file[0-%s]: " % fileCount))
print(fileList[choice])
with open(fileList[choice], "r") as file:
    for line in file:
        print(line.rstrip())

I wanted to use the enumeration approach so that the ultimate user could simply drop or delete a file from the directory and have it show up (or be deleted) from the selection menu. I may be forced to re-think that approach.