change sth

Flynnon · web-flow · commit fa4bcc6ccc31 · 2019-03-10T15:40:46.000+08:00
diff --git a/source/c09/p25_disassembling_python_byte_code.rst b/source/c09/p25_disassembling_python_byte_code.rst
@@ -15,14 +15,38 @@
 .. code-block:: python
 
     >>> def countdown(n):
-    ... while n > 0:
-    ...     print('T-minus', n)
-    ...     n -= 1
-    ... print('Blastoff!')
+    ...     while n > 0:
+    ...         print('T-minus', n)
+    ...         n -= 1
+    ...     print('Blastoff!')
     ...
     >>> import dis
     >>> dis.dis(countdown)
-    ...
+      2           0 SETUP_LOOP              30 (to 32)
+            >>    2 LOAD_FAST                0 (n)
+                  4 LOAD_CONST               1 (0)
+                  6 COMPARE_OP               4 (>)
+                  8 POP_JUMP_IF_FALSE       30
+    
+      3          10 LOAD_GLOBAL              0 (print)
+                 12 LOAD_CONST               2 ('T-minus')
+                 14 LOAD_FAST                0 (n)
+                 16 CALL_FUNCTION            2
+                 18 POP_TOP
+    
+      4          20 LOAD_FAST                0 (n)
+                 22 LOAD_CONST               3 (1)
+                 24 INPLACE_SUBTRACT
+                 26 STORE_FAST               0 (n)
+                 28 JUMP_ABSOLUTE            2
+            >>   30 POP_BLOCK
+    
+      5     >>   32 LOAD_GLOBAL              0 (print)
+                 34 LOAD_CONST               4 ('Blastoff!')
+                 36 CALL_FUNCTION            1
+                 38 POP_TOP
+                 40 LOAD_CONST               0 (None)
+                 42 RETURN_VALUE
     >>>
 
 ----------
@@ -46,9 +70,8 @@
     >>> c = countdown.__code__.co_code
     >>> import opcode
     >>> opcode.opname[c[0]]
-    >>> opcode.opname[c[0]]
     'SETUP_LOOP'
-    >>> opcode.opname[c[3]]
+    >>> opcode.opname[c[2]]
     'LOAD_FAST'
     >>>
 
