from sys import argv
from os.path import exists
from helper_functions import append_txt
if len(argv) == 3:
script, from_file, to_file = argv
else:
from_file = raw_input("What file do you want to copy? ")
to_file = raw_input("What do you want to call the copy? ")
if exists(append_txt(from_file)):
open(append_txt(to_file), 'w').write(open(append_txt(from_file)).read())
print "Alright, all done."
else:
print "FAILED: file doesn't exist."
else:
print "You've chosen the last line"
else:
return "exit()"
text = raw_input("What do you want to write? ")
if text == exit_command:
return "exit()"
return {"line": line_number, "text": text}
if len(argv) >= 2:
filename = argv[1]
else:
filename = raw_input("What would you like to call the file? ")
filename = append_txt(filename)
if exists(filename):
# file.read() returns back string, so need to make it an array and indexable
# Don't use file.readline() because that only works with r or a+ modes
# And in r mode you can't write, in a+ mode you can't overwrite
file_content = open(filename).read().split("\n")
print "\n", filename, " currently contains:"
for idx, line in enumerate(file_content):
print idx + 1, ": ", line
else:
print "\nCreating file ", filename
file_content = []
print "\nStop at any time by entering 'exit()'"
commands = get_input(file_content)
while commands != exit_command:
"""
Practice reading and writing files
"""
from sys import argv
from os.path import exists
from helper_functions import append_txt
if len(argv) == 2:
script, filename = argv
else:
filename = append_txt(raw_input("What file do you want to open? "))
file_exists = exists(filename)
if file_exists:
txt = open(filename)
print "\nHere's your file %r:" % filename
print txt.read()
txt.close()
else:
print "\nThis will be a new file!"
print "If you don't want that, hit CTRL-C (^C)."
# r+ writes like insert
# a+ reads from end of file, writes to end of file, creates file if it doesn't exist
# w+ will overwrite and read from end of file (file overwritten upon open)
# r, w, and a will only do their respective tasks
if file_exists:
open_type = raw_input("Do you want to overwrite (w) or append (a)? ").lower()
if open_type != "w" and open_type != "a" and open_type != "r":
print "Not a valid option. We're going to append"
open_type = "a"
