<filename>ex17.py
from sys import argv
from os.path import exists

script, from_file, to_file=argv
 
print(f"Copying from {from_file} to {to_file}")

in_file=open(from_file)
indata=in_file.read()

print(f"The input file is {len(indata)} bytes long")

print(f"Does the output file exit? {exists(to_file)}")
print("Ready, hit RETURN to continue, CTRL-C to abort.")
input()

out_file=open(to_file, 'w')
out_file.write(indata)

print("Alright, all done.")

out_file.close()
in_file.close()
