Improve Python snippets

UltiSnips/python.snippets

@@ -1,15 +1,15 @@
-snippet main "Python main stub"
+snippet #! "Shebang"
 #!/usr/bin/env python
-"""${1:docstring}"""
+endsnippet
 
+snippet main "Python main stub"
 from argparse import ArgumentParser
 
 
 def main():
-	"""Main entry point."""
-	parser = ArgumentParser(description='${2:description}')
-	parser.add_argument('${3:argument}')
-	args = parser.parse_args()$0
+	parser = ArgumentParser()
+	parser.add_argument('${0:argument}')
+	args = parser.parse_args()
 
 
 if __name__ == '__main__':