Sep-18-2017, 02:55 AM
I followed the book (Learn Python the Hard Way) correctly and still my code gets an error. What am I doing wrong?
Error: Traceback (most recent call last):
File "ex17.py", line 4, in <module>
script, from_file, to_file = argv
ValueError: need more than 1 value to unpack
Error: Traceback (most recent call last):
File "ex17.py", line 4, in <module>
script, from_file, to_file = argv
ValueError: need more than 1 value to unpack
from sys import argv from os.path import exists script, from_file, to_file = argv print "Copying from %s to %s" % (from_file, to_file) # we could do these two on one line too, how? in_file = open(from_file) indata = in_file.read() print "The input file is %d bytes long" % len(indata) print "Does the output file exist? %r" % exists(to_file) print "Ready, hit RETURN to continue, CTRL-C to abort." raw_input() out_file = open(to_file, 'w') out_file.write(indata) print "Alright, all done." out_file.close() in_file.close()