[nvim] Update UltiSnips script snippet for Python

config/nvim/UltiSnips/python.snippets

@@ -11,11 +11,13 @@ def parse_args():
 endsnippet
 
 snippet ifmain
-def main():
+def main(argv):
 	${1:pass}
 
+
 if __name__ == '__main__':
-	main()
+	import sys
+	sys.exit(main(sys.argv))
 endsnippet
 
 snippet script
@@ -28,18 +30,20 @@ snippet script
 
 import argparse
 
+
 def parse_args(argv, *a, **kw):
 	parser = argparse.ArgumentParser(*a, **kw)
 	# TODO: Configure arguments here.
 	args = parser.parse_args(argv)
 	return args
 
+
 def main(argv):
 	args = parse_args(argv[1:], prog=argv[0])
 	${1:# TODO}
 
+
 if __name__ == '__main__':
 	import sys
-		result = main(sys.argv)
+	sys.exit(main(sys.argv))
-		sys.exit(0 if not result else result)
 endsnippet