added solution for 11

rebouny · rebouny · commit 0abec3024736 · 2022-11-14T11:52:17.000+01:00
diff --git a/11_bottles_of_beer/bottles.py b/11_bottles_of_beer/bottles.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+"""
+Author : Martin Schuh <development@rebouny.net>
+Date   : 2022-11-14
+Purpose: Bottles of beer
+"""
+
+import argparse
+from typing import Final
+
+
+TAKE_ONE_DOWN: Final = 'Take one down, pass it around,'
+
+
+# --------------------------------------------------
+def get_args():
+    """Get command-line arguments"""
+
+    parser = argparse.ArgumentParser(
+        description='Bottles of beer song',
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+
+    parser.add_argument('-n',
+                        '--num',
+                        help='How many bottles',
+                        metavar='number',
+                        type=int,
+                        default=10)
+
+    args = parser.parse_args()
+
+    if args.num < 1:
+        parser.error(f'--num "{args.num}" must be greater than 0')
+
+    return args
+
+
+# --------------------------------------------------
+def main():
+    """Make a jazz noise here"""
+
+    args = get_args()
+
+    _ = [print(verse(bottle) + ("\n" if bottle > 1 else ""))
+         for bottle in range(args.num, 0, -1)]
+
+
+# --------------------------------------------------
+def verse(bottle: int):
+    """Sing a verse"""
+
+    return '\n'.join([
+        f'{plural(bottle)} of beer on the wall,',
+        f'{plural(bottle)} of beer,',
+        TAKE_ONE_DOWN,
+        'No more bottles of beer on the wall!'
+           if bottle-1 == 0 else f'{plural(bottle-1)} of beer on the wall!'
+        ])
+
+
+def plural(bottle: int):
+    """Help me out with plural of bottle(s)"""
+    return f'{bottle} bottle{"s" if bottle > 1 else ""}'
+
+
+def test_verse():
+    """Test verse"""
+
+    last_verse = verse(1)
+    assert last_verse == '\n'.join([
+        '1 bottle of beer on the wall,',
+        '1 bottle of beer,',
+        TAKE_ONE_DOWN,
+        'No more bottles of beer on the wall!'
+    ])
+
+    two_bottles = verse(2)
+    assert two_bottles == '\n'.join([
+        '2 bottles of beer on the wall,',
+        '2 bottles of beer,',
+        TAKE_ONE_DOWN,
+        '1 bottle of beer on the wall!'
+    ])
+
+
+# --------------------------------------------------
+if __name__ == '__main__':
+    main()
