diff --git a/doc/Makefile b/doc/Makefile
index 267db01..6e5e36f 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -5,7 +5,7 @@
 SPHINXOPTS    =
 SPHINXBUILD   = sphinx-build
 PAPER         =
-BUILDDIR      = /Users/sean/indigo_workspace/Meta_Doc
+BUILDDIR      = _build
 
 # Internal variables.
 PAPEROPT_a4     = -D latex_paper_size=a4
diff --git a/meta/asttools/visitors/cond_symbol_visitor.py b/meta/asttools/visitors/cond_symbol_visitor.py
index 46f3a69..e4860ab 100644
--- a/meta/asttools/visitors/cond_symbol_visitor.py
+++ b/meta/asttools/visitors/cond_symbol_visitor.py
@@ -296,7 +296,7 @@ def visitExceptHandler(self, node):
             self.update_stable_rhs(get_symbols(node.type, ast.Load))
 
         if node.name:
-            self.update_stable_lhs({node.name})
+            self.update_stable_lhs(set([node.name]))
 
         self.visit_list(node.body)
 
@@ -315,7 +315,7 @@ def visitImport(self, node):
     def visitLambda(self, node):
 
         gen = ConditionalSymbolVisitor()
-        gen.update_stable_lhs(symbols={arg for arg in node.args.args})
+        gen.update_stable_lhs(symbols=set(arg for arg in node.args.args))
         gen.visit_list(node.body)
 
         self.update_stable_rhs(gen.undefined)
@@ -325,10 +325,10 @@ def visitFunctionDef(self, node):
         for decorator in node.decorator_list:
             self.update_stable_rhs(get_symbols(decorator, ast.Load))
 
-        self.update_stable_lhs({node.name})
+        self.update_stable_lhs(set([node.name]))
 
         gen = ConditionalSymbolVisitor()
-        gen.update_stable_lhs(symbols={arg for arg in node.args.args})
+        gen.update_stable_lhs(symbols=set(arg for arg in node.args.args))
         gen.visit_list(node.body)
 
         self.update_stable_rhs(gen.undefined)
diff --git a/meta/asttools/visitors/graph_visitor.py b/meta/asttools/visitors/graph_visitor.py
index c52de11..c12f563 100644
--- a/meta/asttools/visitors/graph_visitor.py
+++ b/meta/asttools/visitors/graph_visitor.py
@@ -57,7 +57,7 @@ def visitName(self, node):
             if not self.graph.has_edge(node.id, ctx_var):
                 self.graph.add_edge(node.id, ctx_var)
 
-        return {node.id}
+        return set([node.id])
 
     def visitalias(self, node):
         name = node.asname if node.asname else node.name
@@ -68,7 +68,7 @@ def visitalias(self, node):
         if not self.graph.has_node(name):
             self.graph.add_node(name)
 
-        return {name}
+        return set([name])
 
     def visitCall(self, node):
         left = self.visit(node.func)
diff --git a/meta/asttools/visitors/print_visitor.py b/meta/asttools/visitors/print_visitor.py
index 6acdd38..edaa1f7 100644
--- a/meta/asttools/visitors/print_visitor.py
+++ b/meta/asttools/visitors/print_visitor.py
@@ -10,7 +10,7 @@
 import _ast
 from warnings import warn
 
-if sys.version_info.major < 3:
+if sys.version_info[0] < 3:
     from StringIO import StringIO
 else:
     from io import StringIO
diff --git a/meta/asttools/visitors/pysourcegen.py b/meta/asttools/visitors/pysourcegen.py
index 2ef00a9..c869e04 100644
--- a/meta/asttools/visitors/pysourcegen.py
+++ b/meta/asttools/visitors/pysourcegen.py
@@ -11,7 +11,7 @@
 from meta.utils import py3op, py2op
 from contextlib import contextmanager
 
-if sys.version_info.major < 3:
+if sys.version_info[0] < 3:
     from StringIO import StringIO
 else:
     from io import StringIO
diff --git a/meta/asttools/visitors/symbol_visitor.py b/meta/asttools/visitors/symbol_visitor.py
index f847de6..804d309 100644
--- a/meta/asttools/visitors/symbol_visitor.py
+++ b/meta/asttools/visitors/symbol_visitor.py
@@ -29,7 +29,7 @@ def visitDefault(self, node):
 
     def visitName(self, node):
         if isinstance(node.ctx, self.ctx_types):
-            return {node.id}
+            return set([node.id])
         else:
             return set()
 
@@ -41,7 +41,7 @@ def visitalias(self, node):
             name = name.split('.', 1)[0]
 
         if ast.Store in self.ctx_types:
-            return {name}
+            return set([name])
         else:
             return set()
 
diff --git a/meta/bytecodetools/disassembler_.py b/meta/bytecodetools/disassembler_.py
index 36dede4..82f7926 100644
--- a/meta/bytecodetools/disassembler_.py
+++ b/meta/bytecodetools/disassembler_.py
@@ -11,7 +11,7 @@
 import sys
 from meta.bytecodetools.instruction import Instruction
 
-py3 = sys.version_info.major >= 3
+py3 = sys.version_info[0] >= 3
 co_ord = (lambda c:c) if py3 else ord
 
 def disassembler(co, lasti= -1):
diff --git a/meta/bytecodetools/instruction.py b/meta/bytecodetools/instruction.py
index 159abaa..948c519 100644
--- a/meta/bytecodetools/instruction.py
+++ b/meta/bytecodetools/instruction.py
@@ -8,7 +8,7 @@
 import opcode
 import sys
 
-py3 = sys.version_info.major >= 3
+py3 = sys.version_info[0] >= 3
 co_ord = (lambda c:c) if py3 else ord
 
 
diff --git a/meta/decompiler/__init__.py b/meta/decompiler/__init__.py
index e358a11..8ab6558 100644
--- a/meta/decompiler/__init__.py
+++ b/meta/decompiler/__init__.py
@@ -52,7 +52,9 @@ def compile_func(ast_node, filename, globals, **defaults):
     funcion_name = ast_node.name
     module = _ast.Module(body=[ast_node])
 
-    ctx = {'%s_default' % key : arg for key, arg in defaults.items()}
+    ctx = {}
+    for key, arg in defaults.iteritems():
+        ctx['%s_default' % key] = arg
 
     code = compile(module, filename, 'exec')
 
diff --git a/meta/decompiler/control_flow_instructions.py b/meta/decompiler/control_flow_instructions.py
index c8777db..1e0524d 100644
--- a/meta/decompiler/control_flow_instructions.py
+++ b/meta/decompiler/control_flow_instructions.py
@@ -6,13 +6,21 @@
 from __future__ import print_function
 import opcode
 import _ast
+import sys
 from meta.bytecodetools.instruction import Instruction
 from meta.asttools.visitors.print_visitor import print_ast
 from meta.utils import py3op, py2op, py3
-AND_JUMPS = ['JUMP_IF_FALSE_OR_POP', 'POP_JUMP_IF_FALSE']
-OR_JUMPS = ['JUMP_IF_TRUE_OR_POP', 'POP_JUMP_IF_TRUE']
-JUMPS = AND_JUMPS + OR_JUMPS
-JUMP_OPS = [opcode.opmap[name] for name in JUMPS]
+
+if sys.version_info >= (2, 7):
+    AND_JUMPS = ['JUMP_IF_FALSE_OR_POP', 'POP_JUMP_IF_FALSE']
+    OR_JUMPS = ['JUMP_IF_TRUE_OR_POP', 'POP_JUMP_IF_TRUE']
+    JUMPS = AND_JUMPS + OR_JUMPS
+    JUMP_OPS = [opcode.opmap[name] for name in JUMPS]
+else:
+    AND_JUMPS = []
+    OR_JUMPS = []
+    JUMPS = []
+    JUMP_OPS = []
 
 
 def split(block, name):
@@ -602,7 +610,9 @@ def while_loop(self, instr, loop_block):
 
         kw = dict(lineno=instr.lineno, col_offset=0)
 
-        loop_block_map = {instr.i:instr.op for instr in loop_block}
+        loop_block_map = {}
+        for instr in loop_block:
+            loop_block_map[instr.i] = instr.op
 
         first_i = loop_block[0].i
         
@@ -662,7 +672,7 @@ def gather_jumps(self, jump_instr):
 
         and_block = self.make_block(to=to, inclusive=False, raise_=False)
 
-        jump_tos = {to}
+        jump_tos = set([to])
         last_len = 0
         old_max = to
         
diff --git a/meta/utils.py b/meta/utils.py
index 349cf51..34f1e67 100644
--- a/meta/utils.py
+++ b/meta/utils.py
@@ -5,7 +5,7 @@
 '''
 import sys
 
-py3 = sys.version_info.major >= 3
+py3 = sys.version_info[0] >= 3
 
 class Python2(object):
     @staticmethod