working on the command-line arguments here

.gitignore

@@ -1,2 +1,4 @@
 *~
 *.pyc
+#*#
+.*

4grab.py

@@ -0,0 +1,17 @@
+import optparse
+import sys
+
+import config
+
+parser = optparse.OptionParser()
+
+parser.add_option("-e", nargs=2, dest="confval", metavar="VALUE")
+
+(options, args) = parser.parse_args()
+
+if options.confval:
+    if not config.Configuration().option_exists(options.confval[0]):
+        print "%s: error: %s is not a valid configuration option" % (sys.argv[0], options.confval[0])
+        exit(1)
+    print "Setting", options.confval[0], "to", options.confval[1]
+    config.Configuration().

config.py

@@ -12,18 +12,12 @@ class _Configuration(object):
 
     def create_new(self):
         self.configparser.add_section("settings")
-        self.configparser.set("settings", "category", self.raw_input_with_default("w", "Please enter which category you would like to download from: "))
+        self.set_category(self.raw_input_with_default("w", "Please enter which category you would like to download from: "))
         
         self.configparser.add_section("locations")
         self.configparser.set("locations", "download", self.raw_input_with_default(os.path.join(os.getenv("HOME"), "Pictures"), "Please enter where you would like the downloads to go: "))
 
-        #with open(self.filename) as configfile:
-        #    self.configparser.write(configfile)
-        dirname = os.path.dirname(self.filename)
-        if not os.path.exists(dirname):
-            os.mkdir(dirname)
-        configfile = open(self.filename, "w")
-        self.configparser.write(configfile)
+        self.save()
 
     def raw_input_with_default(self, default, prompt):
         inp = raw_input("%s (default=%s): " % (prompt, default))
@@ -37,5 +31,21 @@ class _Configuration(object):
     def get_category(self):
         return self.configparser.get("settings", "category")
 
+    def set_category(self, value):
+        self.configparser.set("settings", "category", value)
+
+    def option_exists(self, option):
+        for section in self.configparser.sections():
+            if self.configparser.has_option(section, option):
+                return True
+        return False
+
+    def save(self):
+        dirname = os.path.dirname(self.filename)
+        if not os.path.exists(dirname):
+            os.mkdir(dirname)
+        configfile = open(self.filename, "w")
+        self.configparser.write(configfile)
+
 _configuration = _Configuration()
 def Configuration(): return _configuration