count the files in directory and loop one by one

Question

I have some different format files in a one directory, but i want to read only .txt file and print the based on the count ,

Example: (one.txt,two.txt,three.txt,four.txt,one.xlsx,two.xlsx)

here i want to count the .txt files and read all .txt file one by one , here the count is 4

read file one.txt

print("hello")

read file two.txt

print("hello")

read file three.txt

print("hello")

read file four.txt

print("hello")