From e2c845b60df66cb9520706aeaf163c0fec1a56d1 Mon Sep 17 00:00:00 2001
From: theredwillow <theredwillows@gmail.com>
Date: Mon, 30 May 2016 19:09:52 -0500
Subject: [PATCH] Initial Contribution

Changes:
1. Minor PEP8 fixes
2. Added text file saving and reading functionality for later use and
printing needs
4. Added command variable to hold new_stuff().upper() to handle case
incompliance in user input
3. Added immediate REMOVE functionality (i.e. "Remove 4" to remove
shopping_list[3] without additional dialog, including via strings such
as "Remove potatoes" to remove item from shopping_list equal to
"potatoes" and error handling for "This isn't in your list.")
4. show_list() now called before asking user which item to remove
5. show_list() now has return_only variable: true to return shopping
list, default false to print shopping list - useful for printing inside
functions such as input() and write()
6. for loop in show_list() now enumerates to eliminate use of local
count variable

New requirements:
import os.path.isfile
---
 shopping_list.py | 98 ++++++++++++++++++++++++++++++++++--------------
 1 file changed, 70 insertions(+), 28 deletions(-)

diff --git a/shopping_list.py b/shopping_list.py
index f02f945..5c0c36a 100644
--- a/shopping_list.py
+++ b/shopping_list.py
@@ -1,54 +1,96 @@
-shopping_list = []
+from os.path import isfile
 
 def remove_item(idx):
-    index = idx -1
-    item = shopping_list.pop(index)
-    print("Remove {}.".format(item))
+    try:
+        index = int(idx) - 1
+        item = shopping_list.pop(index)
+    except:
+        item = idx
+        try:
+            shopping_list.remove(item)
+        except:
+            print("This isn't in your list.")
+            show_list()
+            return
+    print("Removed: {}.".format(item))
 
 def show_help():
     print("\nSeparate each item with a comma.")
     print("Type DONE to quit, SHOW to see the current list, REMOVE to delete an d item and HELP to get this message")
 
+def load_list():
+    if isfile(file_name):
+        print("Grocery list found.")
+        for f in tuple(open(file_name, 'r')):
+            f = f.split(": ")
+            if len(f) > 1:
+                f.pop(0)
+                f[-1] = f[-1][:-1]
+                shopping_list.append(": ".join(f))
+        return show_list(return_only=True)
+
+def show_list(return_only=False):
+    if return_only:
+        display = ""
+    else:
+        display = "\nHere's your list:\n"
+
+    if len(shopping_list) > 0:
+        for count, item in enumerate(shopping_list):
+            display += "{}: {}\n".format(count + 1, item)
+    else:
+        display = "Your shopping list is empty right now."
+
+    if return_only:
+        return display
+    else:
+        print(display)
+
+def save_list():
+    show_list()
+    with open(file_name, "w") as text_file:
+        text_file.write(show_list(return_only=True))
+    print("It has been saved.")
 
-def show_list():
-    count = 1
-    for item in shopping_list:
-        print ("{}: {}".format(count, item))
-        count += 1
+shopping_list = []
+file_name = "grocery_list" + ".txt"
 
-print("Give me a list of things you want to shop for.")
+current_list = load_list()
+if current_list:
+    print(current_list, end="")
+else:
+    print("Give me a list of things you want to shop for.")
 show_help()
 
 while True:
     new_stuff = input("> ")
+    command = new_stuff.upper()
 
-    if new_stuff == "DONE":
-        print("\nHere's your list:")
-        show_list()
+    if command == "DONE":
+        save_list()
         break
-    elif new_stuff == "HELP":
+    elif command == "HELP":
         show_help()
-        continue
-    elif new_stuff == "SHOW":
-        show_list()
-        continue
-    elif new_stuff == "REMOVE":
+    elif command == "SHOW":
         show_list()
-        idx = input("Which item? Tell me the number.")
-        remove_item(int(idx))
-        continue
+    elif command.startswith("REMOVE"):
+        if not new_stuff[7:]:
+            show_list()
+            idx = input("Which item? Tell me the number.")
+        else:
+            idx = new_stuff[7:]
+        remove_item(idx)
     else:
         new_list = new_stuff.split(",")
-        index = input("Add this at a certain spot? Press enter for the end of the list, "
-                                    "or give me a number. Currently {} item in the list.".format(
-                       len(shopping_list)))
+        index = ""
+        if len(shopping_list) > 0:
+            index = input("Add this at a certain spot? Press enter for the end of the list, "
+                          "or give me a number. This is the current list:\n" + show_list(return_only=True))
         if index:
-            spot = int(index) -1
+            spot = int(index) - 1
             for item in new_list:
                 shopping_list.insert(spot, item.strip())
                 spot += 1
         else:
             for item in new_list:
                 shopping_list.append(item.strip())
-
-