[Tutor] Comments appreciated

[Luis N]

This is the most meaningful thing this newbie has ever done. Comments
are appreciated:

#!/usr/local/bin/python

trashcan = "/home/anewby/.trashcan"

import os, sys, shutil

junk = []
for arg in sys.argv:
    junk.append(arg)

junk = junk[1:]

empty = False

if "-e" in junk:
    empty = True
    junk.remove("-e")
    
if not os.path.exists(trashcan):
    os.mkdir(trashcan)

def trash(junk):  
    for i in junk:
        toss = trashcan + "/" + i
        if os.path.exists(toss):
            if os.path.isdir(toss):
                shutil.rmtree(toss)
            if os.path.isfile(toss):
                os.remove(toss)
        os.rename(i, toss)

def can():
    for j in os.listdir(trashcan):
        if os.path.isdir(j):
            shutil.rmtree(j)
        if os.path.isfile(j):
            os.remove(j)

if len(junk) is 0 and empty == False:
    sys.exit()    
else:
    if len(junk) > 0:
        trash(junk)
    if empty == True:
        can()