I want to find a .txt file in the directory

import glob
Import os #Write only if you need to change the directory
os.chdir("/mydir") #Write only if you need to change the directory
for file in glob.glob("*.txt"): #'*' means all values
    print(file)

import os
for file in os.listdir("/mydir"):
    if file.endswith(".txt"): #Ended with ".txt"
        print(file)