[issue6978] compiler.transformer dict key bug d[1,] = 1

[Chuck Rhode]

Chuck Rhode <CRhode at LacusVeris.com> added the comment:

Here are four ways to generate things called in the documentation Abstract Syntax Trees (ASTs).  Obviously they are not all the same kind of object:

#!/usr/local/bin/python2.6

import sys
import compiler
import parser
import ast

STATEMENT = 'd[1,] = 2'

print 'level %s' % sys.version
print compiler.parse(STATEMENT)
print parser.suite(STATEMENT).tolist()
print ast.dump(
    compile(STATEMENT, '<string>', 'exec', ast.PyCF_ONLY_AST),
    annotate_fields=False,
    include_attributes=False,
    )
print ast.dump(
    ast.parse(STATEMENT),
    annotate_fields=False,
    include_attributes=False,
    )

# Fin

Here are the results:

>>> level 2.6.2 (r262:71600, Jun 29 2009, 08:08:18) 
[GCC 4.3.2]
>>> Module(None, Stmt([Assign([Subscript(Name('d'), 'OP_ASSIGN', [Const(1)])], Const(2))]))
>>> [257, [267, [268, [269, [270, [327, [304, [305, [306, [307, [308, [310, [311, [312, [313, [314, [315, [316, [317, [318, [1, 'd']], [322, [9, '['], [323, [324, [304, [305, [306, [307, [308, [310, [311, [312, [313, [314, [315, [316, [317, [318, [2, '1']]]]]]]]]]]]]]]], [12, ',']], [10, ']']]]]]]]]]]]]]]]], [22, '='], [327, [304, [305, [306, [307, [308, [310, [311, [312, [313, [314, [315, [316, [317, [318, [2, '2']]]]]]]]]]]]]]]]]], [4, '']]], [0, '']]
>>> Module([Assign([Subscript(Name('d', Load()), Index(Tuple([Num(1)], Load())), Store())], Num(2))])
>>> Module([Assign([Subscript(Name('d', Load()), Index(Tuple([Num(1)], Load())), Store())], Num(2))])

To me the *compiler* module has vestigial utility.  It would be nice if it returned correct results.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6978>
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