Add prompt color support using ANSI codes (Closes: #18) (#252)

etc/lshell.conf

@@ -13,7 +13,7 @@ loglevel        : 2
 #logfilename     : syslog
 
 ##  in case you are using syslog, you can choose your logname
-#syslogname      : myapp
+#syslogname      : lshell
 
 ##  Set path to sudo noexec library. This path is usually autodetected, only
 ##  set this variable to use alternate path. If set and the shared object is
@@ -76,7 +76,10 @@ aliases         : {'ll':'ls -l'}
 #intro           : "== My personal intro ==\nWelcome to lshell\nType '?' or 'help' to get the list of allowed commands"
 
 ##  configure your prompt using %u or %h (default: username)
-#prompt          : "%u@%h"
+# prompt          : "%u@%h"
+##  colored prompt using ANSI escape codes colors (light red user, light cyan host)
+prompt          : "\033[91m%u\033[97m@\033[96m%h\033[0m"
+
 
 ##  set sort prompt current directory update (default: 0)
 #prompt_short    : 0

lshell/checkconfig.py

@@ -133,7 +133,7 @@ def check_config_file(self, file):
             self.stderr.write("Error: Config file doesn't exist\n")
             utils.usage()
         else:
-            self.config = configparser.ConfigParser()
+            self.config = configparser.ConfigParser(interpolation=None)
 
     def get_global(self):
         """Loads the [global] parameters from the configuration file"""
@@ -307,7 +307,7 @@ def get_config_sub(self, section):
                 conf.append((key, self.conf[key]))
 
         if self.config.has_section(section):
-            conf = self.config.items(section) + conf
+            conf = list(self.config.items(section)) + conf
             for item in conf:
                 key = item[0]
                 value = item[1]