Add "comp_if_not" for 2.6-

uncompyle6/parsers/parse26.py

@@ -232,7 +232,10 @@ class Python26Parser(Python2Parser):
 
         comp_for ::= SETUP_LOOP expr for_iter store comp_iter jb_pb_come_from
 
-        comp_body ::= gen_comp_body
+        comp_iter   ::= comp_if_not
+        comp_if_not ::= expr jmp_true comp_iter
+
+        comp_body   ::= gen_comp_body
 
         for_block ::= l_stmts_opt _come_froms POP_TOP JUMP_BACK
 

uncompyle6/parsers/parse27.py

@@ -8,7 +8,6 @@ from uncompyle6.parser import PythonParserSingle, nop_func
 from uncompyle6.parsers.parse2 import Python2Parser
 from uncompyle6.parsers.reducecheck import (
     or_check,
-    ifelsestmt,
     tryelsestmt,
 )
 

uncompyle6/parsers/reducecheck/or_check.py

@@ -33,7 +33,8 @@ def or_check(self, lhs, n, rule, ast, tokens, first, last):
         else:
             jump_true = expr_jt[1][0]
 
-        jmp_true_target = jump_true.attr
+        jump_inst = self.insts[self.offset2inst_index[jump_true.offset]]
+        jmp_true_target = jump_inst.argval
 
         last_token = tokens[last]
         last_token_offset = last_token.off2int()
@@ -43,6 +44,8 @@ def or_check(self, lhs, n, rule, ast, tokens, first, last):
             return False
         elif jmp_true_target < last_token_offset:
             return True
+        elif expr_jt.kind == "expr_jt" and jmp_true_target > last_token_offset:
+            return True
 
         # If the jmp is backwards
         if last_token == "POP_JUMP_IF_FALSE" and not self.version in (2.7, 3.5, 3.6):