Remove unused imports

hy/compiler.py

@@ -15,8 +15,7 @@ from hy.lex.parser import mangle, unmangle
 
 import hy.macros
 from hy._compat import (
-    str_type, string_types, bytes_type, long_type, PY3, PY35, PY37,
-    raise_empty)
+    str_type, bytes_type, long_type, PY3, PY35, raise_empty)
 from hy.macros import require, macroexpand, tag_macroexpand
 import hy.importer
 
@@ -27,7 +26,6 @@ import sys
 import copy
 
 from collections import defaultdict
-from cmath import isnan
 
 if PY3:
     import builtins

hy/importer.py

@@ -5,7 +5,7 @@
 from __future__ import absolute_import
 
 from hy.compiler import hy_compile, HyTypeError
-from hy.models import HyObject, HyExpression, HySymbol
+from hy.models import HyExpression, HySymbol
 from hy.lex import tokenize, LexException
 from hy.errors import HyIOError
 

hy/lex/parser.py

@@ -6,11 +6,11 @@
 from __future__ import unicode_literals
 
 from functools import wraps
-import string, re, unicodedata
+import re, unicodedata
 
 from rply import ParserGenerator
 
-from hy._compat import PY3, str_type, isidentifier, UCS4
+from hy._compat import str_type, isidentifier, UCS4
 from hy.models import (HyBytes, HyComplex, HyDict, HyExpression, HyFloat,
                        HyInteger, HyKeyword, HyList, HySet, HyString, HySymbol)
 from .lexer import lexer

tests/test_bin.py

@@ -5,14 +5,13 @@
 # license. See the LICENSE.
 
 import os
-from pipes import quote
 import re
 import shlex
 import subprocess
 
 import pytest
 
-from hy._compat import PY3, PY35, PY36, builtins
+from hy._compat import builtins
 from hy.importer import get_bytecode_path