Issue #4842, patch 1/2: fix pickle in Python 3.x so that pickling with the
'L' opcode always appends an 'L' on output, just as 2.x does. When
unpickling, remove the trailing 'L' (if present) before passing the
result to PyLong_FromString.
diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index 1dd45da..6614df7 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -527,6 +527,8 @@
"""
s = read_stringnl(f, decode=False, stripquotes=False)
+ if s[-1:] == b'L':
+ s = s[:-1]
return int(s)
@@ -2052,39 +2054,39 @@
1: l LIST (MARK at 0)
2: p PUT 0
5: L LONG 1
- 8: a APPEND
- 9: L LONG 2
- 12: a APPEND
- 13: ( MARK
- 14: L LONG 3
- 17: L LONG 4
- 20: t TUPLE (MARK at 13)
- 21: p PUT 1
- 24: a APPEND
- 25: ( MARK
- 26: d DICT (MARK at 25)
- 27: p PUT 2
- 30: c GLOBAL 'builtins bytes'
- 46: p PUT 3
- 49: ( MARK
- 50: ( MARK
- 51: l LIST (MARK at 50)
- 52: p PUT 4
- 55: L LONG 97
- 59: a APPEND
- 60: L LONG 98
+ 9: a APPEND
+ 10: L LONG 2
+ 14: a APPEND
+ 15: ( MARK
+ 16: L LONG 3
+ 20: L LONG 4
+ 24: t TUPLE (MARK at 15)
+ 25: p PUT 1
+ 28: a APPEND
+ 29: ( MARK
+ 30: d DICT (MARK at 29)
+ 31: p PUT 2
+ 34: c GLOBAL 'builtins bytes'
+ 50: p PUT 3
+ 53: ( MARK
+ 54: ( MARK
+ 55: l LIST (MARK at 54)
+ 56: p PUT 4
+ 59: L LONG 97
64: a APPEND
- 65: L LONG 99
- 69: a APPEND
- 70: t TUPLE (MARK at 49)
- 71: p PUT 5
- 74: R REDUCE
- 75: p PUT 6
- 78: V UNICODE 'def'
- 83: p PUT 7
- 86: s SETITEM
- 87: a APPEND
- 88: . STOP
+ 65: L LONG 98
+ 70: a APPEND
+ 71: L LONG 99
+ 76: a APPEND
+ 77: t TUPLE (MARK at 53)
+ 78: p PUT 5
+ 81: R REDUCE
+ 82: p PUT 6
+ 85: V UNICODE 'def'
+ 90: p PUT 7
+ 93: s SETITEM
+ 94: a APPEND
+ 95: . STOP
highest protocol among opcodes = 0
Try again with a "binary" pickle.
@@ -2157,12 +2159,12 @@
92: V UNICODE 'value'
99: p PUT 7
102: L LONG 42
- 106: s SETITEM
- 107: b BUILD
- 108: a APPEND
- 109: g GET 5
- 112: a APPEND
- 113: . STOP
+ 107: s SETITEM
+ 108: b BUILD
+ 109: a APPEND
+ 110: g GET 5
+ 113: a APPEND
+ 114: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(x, 1))