I keep getting the error "[Errno 21] Is a directory:" when recalling a text file from a zipped file

Question

I have a zipped file that I have unzipped that contains text files in the date format "yyyymmdd.txt" and when I try recalling a certain date's file I keep getting the error shown below.

Here is me unzipping the file:

import zipfile
with zipfile.ZipFile("ALL_FOMC_MINUTES_1990_2021.zip","r") as zip_ref:
    zip_ref.extractall('20200315.text')

When I try cleaning the code and importing other text files they all work except for the "20200315" one

import re
def Text(filename):
    f = open(filename, 'r')
    text = f.read()                       
    f.close()
    return text

mainfile=Text('20200315.txt')
file1 =Text('1.6_LM_negative.txt')
file2=Text('1.6_LM_positive.txt')
file3=Text('StopWords_Generic.txt')

This is the traceback and error it gives me: