Clean up dis.py a bit

Author: brandtbucher

Lib/dis.py

@@ -28,11 +28,7 @@
 MAKE_FUNCTION_FLAGS = ('defaults', 'kwdefaults', 'annotations', 'closure')
 
 LOAD_CONST = opmap['LOAD_CONST']
-
 BINARY_OP = opmap['BINARY_OP']
-BINARY_OPS = [name for _, name in _nb_ops]
-
-del _nb_ops
 
 def _try_compile(source, name):
     """Attempts to compile the given source, first as an expression and
@@ -453,7 +449,7 @@ def _get_instructions_bytes(code, varname_from_oparg=None,
                 argrepr = ', '.join(s for i, s in enumerate(MAKE_FUNCTION_FLAGS)
                                     if arg & (1<<i))
             elif op == BINARY_OP:
-                argrepr = BINARY_OPS[arg]
+                _, argrepr = _nb_ops[arg]
         yield Instruction(opname[op], op,
                           arg, argval, argrepr,
                           offset, starts_line, is_jump_target, positions)