@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+"""
+Author: Johan Runesson <info@johanrunesson.se>
+Purpose: Say hello
+"""
+
+import argparse
+
+
+# --------------------------------------------------
+def get_args():
+    """Get the command-line arguments"""
+    parser = argparse.ArgumentParser(description='Say hello')
+    parser.add_argument('-n',
+                        '--name',
+                        metavar='name',
+                        default='World',
+                        help='Name to greet')
+    return parser.parse_args()
+
+
+# --------------------------------------------------
+def main():
+    """Start things up"""
+    args = get_args()
+
+    print('Hello, ' + args.name + '!')
+
+
+# --------------------------------------------------
+if __name__ == '__main__':
+    main()
@@ -0,0 +1,31 @@
+# Notes
+
+## Tools
+
+Run tests:
+
+```
+pytest -xv test.py
+```
+
+Run lint:
+
+```
+pylint hello.py
+```
+
+## Tricks
+
+Make executable:
+
+```
+chmod +x hello.py
+```
+
+Add to PATH:
+
+```
+mkdir ~/bin
+cp 01_hello/hello.py ~/bin
+PATH=~/bin:$PATH
+```