from sys import argv # include argv

script, filename = argv # define a argument

txt = open(filename) # open the file

print(f"Here's your file {filename}:") # print a script
print(txt.read()) # read and print the text from the file

txt.close()

print("Type the filename again:") # print a script
file_again = input("> ") # input from stdin

txt_again = open(file_again) # open the file

print(txt_again.read()) # read and print the text from the file

txt_again.close()