A pyparsing question for isinstance for list

I am new to the pyparsing module and find it such a nice tool for parsing. However, when I try to test the resulting lists with the isinstance function for a list, it doesn't seem to work for me when using Python 3.7.

The following 2 programs with their output hopefully encapsulate the issue that I am having.

Program with pyparsing...

import pyparsing as pp

if __name__ == '__main__':

    print("Testing isinstance with pyparsing...")

    greet = pp.Word(pp.alphas) + "," + pp.Word(pp.alphas) + "!"

    for greeting_str in ["Hello, World!","Bonjour, Monde!","Hola, Mundo!","Hallo, Welt!",]:
        greeting = greet.parseString(greeting_str)
        print("Parsed greeting: ", greeting)
        res = isinstance(greeting, list)
        print("Is this a list? -> ", res)

with resulting output...

Testing isinstance with pyparsing...
Parsed greeting:  ['Hello', ',', 'World', '!']
Is this a list? ->  False
Parsed greeting:  ['Bonjour', ',', 'Monde', '!']
Is this a list? ->  False
Parsed greeting:  ['Hola', ',', 'Mundo', '!']
Is this a list? ->  False
Parsed greeting:  ['Hallo', ',', 'Welt', '!']
Is this a list? ->  False

Program without pyparsing import...

if __name__ == '__main__':

    print("Testing isinstance without pyparsing...")

    parsed_greetings = [['Hello', ',', 'World', '!'], ['Bonjour', ',', 'Monde', '!'], ['Hola', ',', 'Mundo', '!'], ['Hallo', ',', 'Welt', '!']]

    for parsed_greeting in parsed_greetings:
        print("Parsed greeting: ", parsed_greeting)
        res = isinstance(parsed_greeting, list)
        print("Is this a list? -> ", res)

with the resulting output...

Testing isinstance without pyparsing...
Parsed greeting:  ['Hello', ',', 'World', '!']
Is this a list? ->  True
Parsed greeting:  ['Bonjour', ',', 'Monde', '!']
Is this a list? ->  True
Parsed greeting:  ['Hola', ',', 'Mundo', '!']
Is this a list? ->  True
Parsed greeting:  ['Hallo', ',', 'Welt', '!']
Is this a list? ->  True

In summary, the isinstance function for testing a list seems to be working as expected when not using pyparsing, but when I use pyparsing it doesn't seem to work correctly. I looked through the pyparsing documentation but could not find any mention of this issue or a possibility of using list as a variable name.

Using the isinstance function for testing a list is very helpful in some of my later processing, so any insight into this is appreciated.