Here is the code I am working with

def expiryChecker():
    today = datetime.date.today()
    count = datetime.timedelta(30)
    expiryDate = today   count
    #if the file does not exist, create it and input the expiry date as string
    if os.path.exists('/Users/justinfrancisco/Desktop/pythonPractice/accountExpiry.txt') == False:
        file = open("accountExpiry.txt","w ")
        file.write(str(expiryDate) "\n")
        file.close()
        print('file created')
    #open the file again and grab the line of text. close the file.
    file = open("accountExpiry.txt","r")
    expiryStr = file.readline()
    file.close()
    today = '2017-11-21'
    #expiryStr = '2017-11-21'
    print(today)
    print(expiryStr)
    if str(today) == str(expiryStr):
        return True
    else:
        return False

I am trying to determine if 30 days have passed since an account is initialized. When it gets down to the end and I am trying to check if the stored expiry date is the same as todays date it returns as false even when I force the strings to be the same. Can someone help me with this problem? Thank you so much