# reading and writing files

from sys import argv

script, filename = argv

print(f"We're going to erase {filename}.")
print("If you don't want that, hit CTRL-C (^C).")
print("If you do want that, hit RETURN.")

input("?")

print("Opening the file…")

# pour ajouter du texte à un fichier
# target = open(filename, "a")

# pour effacer le contenu et écrire du texte
target = open(filename, "w")
print("Truncating the file. Goodbye!")
target.truncate()

print("Now I'm going to ask you for three lines.")

line1 = input("line 1: ")
line2 = input("line 2: ")
line3 = input("line 3: ")

print("I'm going to write these to the file.")

# target.write(line1)
# target.write("\n")
# target.write(line2)
# target.write("\n")
# target.write(line3)
# target.write("\n")

target.write(f"{line1}\n{line2}\n{line3}\n")

print("And finally, we close it.")

target.close()

print("We will open it again and read it")
txt = open(filename)
print(txt.read())

txt.close()
