Drop support for Pythons 3 older than 3.3

NEWS

@@ -1,6 +1,7 @@
 Changes from 0.12.1
 
    [ Language Changes ]
+   * Pythons 2.6, 3.0, 3.1, and 3.2 are no longer supported
    * `let` has been removed. Python's scoping rules do not make a proper
      implementation of it possible. Use `setv` instead.
    * `lambda` has been removed, but `fn` now does exactly what `lambda` did

hy/_compat.py

@@ -39,7 +39,6 @@ except ImportError:
 import sys
 
 PY3 = sys.version_info[0] >= 3
-PY33 = sys.version_info >= (3, 3)
 PY34 = sys.version_info >= (3, 4)
 PY35 = sys.version_info >= (3, 5)
 

hy/compiler.py

@@ -33,7 +33,7 @@ from hy.lex.parser import hy_symbol_mangle
 
 import hy.macros
 from hy._compat import (
-    str_type, bytes_type, long_type, PY33, PY3, PY34, PY35, raise_empty)
+    str_type, bytes_type, long_type, PY3, PY34, PY35, raise_empty)
 from hy.macros import require, macroexpand, sharp_macroexpand
 import hy.importer
 
@@ -861,7 +861,7 @@ class HyASTCompiler(object):
 
         ret = handler_results
 
-        if PY33:
+        if PY3:
             # Python 3.3 features a merge of TryExcept+TryFinally into Try.
             return ret + ast.Try(
                 lineno=expr.start_line,
@@ -1170,10 +1170,7 @@ class HyASTCompiler(object):
     @checkargs(max=1)
     def compile_yield_expression(self, expr):
         expr.pop(0)
-        if PY33:
-            ret = Result(contains_yield=False)
-        else:
-            ret = Result(contains_yield=True)
+        ret = Result(contains_yield=(not PY3))
 
         value = None
         if expr != []:
@@ -1190,7 +1187,7 @@ class HyASTCompiler(object):
     @builds("yield_from")
     @checkargs(max=1)
     def compile_yield_from_expression(self, expr):
-        if not PY33:
+        if not PY3:
             raise HyCompileError(
                 "yield-from only supported in python 3.3+!")
 
@@ -1464,7 +1461,7 @@ class HyASTCompiler(object):
                             optional_vars=thing,
                             body=body.stmts)
 
-        if PY33:
+        if PY3:
             the_with.items = [ast.withitem(context_expr=ctx.force_expr,
                                            optional_vars=thing)]
 
@@ -2367,7 +2364,7 @@ class HyASTCompiler(object):
             return ret
 
         if body.expr:
-            if body.contains_yield and not PY33:
+            if body.contains_yield and not PY3:
                 # Prior to PEP 380 (introduced in Python 3.3)
                 # generators may not have a value in a return
                 # statement.

hy/core/macros.hy

@@ -26,8 +26,7 @@
 ;;; They are automatically required in every module, except inside hy.core
 
 
-(import [hy.models [HyList HySymbol]]
-        [hy._compat [PY33 PY34]])
+(import [hy.models [HyList HySymbol]])
 
 (defmacro as-> [head name &rest rest]
   "Expands to sequence of assignments to the provided name, starting with head.

hy/importer.py

@@ -35,7 +35,7 @@ import ast
 import os
 import __future__
 
-from hy._compat import PY3, PY33, PY34, MAGIC, builtins, long_type, wr_long
+from hy._compat import PY3, PY34, MAGIC, builtins, long_type, wr_long
 from hy._compat import string_types
 
 
@@ -218,7 +218,7 @@ def write_code_as_pyc(fname, code):
     with builtins.open(cfile, 'wb') as fc:
         fc.write(MAGIC)
         wr_long(fc, timestamp)
-        if PY33:
+        if PY3:
             wr_long(fc, st.st_size)
         marshal.dump(code, fc)
 

tests/compilers/test_compiler.py

@@ -24,7 +24,7 @@ import sys
 
 from hy import compiler
 from hy.models import HyExpression, HyList, HySymbol, HyInteger
-from hy._compat import PY33
+from hy._compat import PY3
 
 if sys.version_info[0] <= 2 and sys.version_info[1] <= 6:
     import unittest2 as unittest
@@ -105,7 +105,7 @@ class HyASTCompilerTest(unittest.TestCase):
         self.assertIsInstance(body[0], ast.Expr)
         self.assertIsInstance(body[0].value, ast.Yield)
 
-        if PY33:
+        if PY3:
             # From 3.3+, the final statement becomes a return value
             self.assertIsInstance(body[1], ast.Return)
             self.assertIsInstance(body[1].value, ast.BinOp)

tests/native_tests/language.hy

@@ -5,7 +5,7 @@
         [hy.errors [HyTypeError]])
 (import sys)
 
-(import [hy._compat [PY33 PY34 PY35]])
+(import [hy._compat [PY3 PY34 PY35]])
 
 (defn test-sys-argv []
   "NATIVE: test sys.argv"
@@ -649,7 +649,7 @@
 (defn test-yield-with-return []
   "NATIVE: test yield with return"
   (defn gen [] (yield 3) "goodbye")
-  (if PY33
+  (if PY3
     (do (setv gg (gen))
         (assert (= 3 (next gg)))
         (try (next gg)

tests/native_tests/py3_only_tests.hy

@@ -1,7 +1,6 @@
 ;; Tests where the emitted code relies on Python 3.
 ;; Conditionally included in nosetests runs.
 
-(import [hy._compat [PY33]])
 (import [hy.errors [HyCompileError]])