uneeded sys

demo/app.py

@@ -1,7 +1,6 @@
 from hy.compiler.ast27 import forge_ast
 from hy.lex.tokenize import tokenize
 import codegen
-import sys
 
 from flask import Flask, render_template, request
 app = Flask(__name__)

hy/compiler/ast27.py

@@ -147,6 +147,7 @@ class AST27Converter(object):
 
         self.native_cases = {
             "defn": self._defn,
+            "fn": self._defn,
             "def": self._def,
             "import": _ast_import,