Work on Getting Started section of documentation

- change the walk through from example.py to a new first_app.py (based on example.py)
- remove the feature tour section, we’ll use the first application to demo the key features

1 files changed, 61 insertions, 0 deletions

diff --git a/examples/first_app.py b/examples/first_app.py
new file mode 100755
index 00000000..4c2d977c
--- /dev/null
+++ b/examples/first_app.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+# coding=utf-8
+"""
+A simple application using cmd2 which demonstrates 8 key features:
+
+    * Settings
+    * Commands
+    * Argument Parsing
+    * Generating Output
+    * Help
+    * Shortcuts
+    * Multiline Commands
+    * History
+"""
+import argparse
+import random
+
+import cmd2
+
+
+class FirstApp(cmd2.Cmd):
+    """A simple cmd2 application."""
+
+    def __init__(self):
+        shortcuts = cmd2.DEFAULT_SHORTCUTS
+        shortcuts.update({'&': 'speak'})
+        super().__init__(multiline_commands=['orate'], shortcuts=shortcuts)
+
+        # Make maxrepeats settable at runtime
+        self.maxrepeats = 3
+        self.settable['maxrepeats'] = 'max repetitions for speak command'
+
+    speak_parser = argparse.ArgumentParser()
+    speak_parser.add_argument('-p', '--piglatin', action='store_true', help='atinLay')
+    speak_parser.add_argument('-s', '--shout', action='store_true', help='N00B EMULATION MODE')
+    speak_parser.add_argument('-r', '--repeat', type=int, help='output [n] times')
+    speak_parser.add_argument('words', nargs='+', help='words to say')
+
+    @cmd2.with_argparser(speak_parser)
+    def do_speak(self, args):
+        """Repeats what you tell me to."""
+        words = []
+        for word in args.words:
+            if args.piglatin:
+                word = '%s%say' % (word[1:], word[0])
+            if args.shout:
+                word = word.upper()
+            words.append(word)
+        repetitions = args.repeat or 1
+        for _ in range(min(repetitions, self.maxrepeats)):
+            # .poutput handles newlines, and accommodates output redirection too
+            self.poutput(' '.join(words))
+
+    # orate is a synonym for speak which takes multiline input
+    do_orate = do_speak
+
+
+if __name__ == '__main__':
+    import sys
+    c = FirstApp()
+    sys.exit(c.cmdloop())