tok.format -> tok.__str__; simplify pypy code

uncompyle6/scanners/scanner3.py

@@ -130,10 +130,13 @@ class Scanner3(scan.Scanner):
             for instr in bytecode.get_instructions(co):
                 print(instr._disassemble())
 
-        customize = {}
         # Container for tokens
         tokens = []
 
+        customize = {}
+        if self.is_pypy:
+            customize['PyPy'] = 1;
+
         self.code = array('B', co.co_code)
         self.build_lines_data(co)
         self.build_prev_op()
@@ -307,7 +310,7 @@ class Scanner3(scan.Scanner):
 
         if show_asm in ('both', 'after'):
             for t in tokens:
-                print(t.format())
+                print(t)
             print()
         return tokens, customize
 
@@ -801,7 +804,7 @@ if __name__ == "__main__":
         from uncompyle6 import PYTHON_VERSION
         tokens, customize = Scanner3(PYTHON_VERSION).disassemble(co)
         for t in tokens:
-            print(t.format())
+            print(t)
     else:
         print("Need to be Python 3.2 or greater to demo; I am %s." %
               PYTHON_VERSION)