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| author |   Guido van Rossum <guido@python.org> | 2002-05-24 15:47:06 +0000 |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 2002-05-24 15:47:06 +0000 |
| commit | 2d3b986480f5a01329cc66b2bdf50fdb94e1c1e4 (patch) | |
| tree | df063351c064542b1694701577ad4e14dd5e00a5 /Grammar | |
| parent | Add missing \ to macro definition only used when universal newlines (diff) | |
| download | cpython-2d3b986480f5a01329cc66b2bdf50fdb94e1c1e4.tar.gz cpython-2d3b986480f5a01329cc66b2bdf50fdb94e1c1e4.tar.bz2 cpython-2d3b986480f5a01329cc66b2bdf50fdb94e1c1e4.zip | |
Disambiguate the grammar for backtick.
The old syntax suggested that a trailing comma was OK inside backticks,
but in fact (due to ideosyncrasies of pgen) it was not. Fix the grammar
to avoid the ambiguity. Fred: you may want to update the refman.
Diffstat (limited to 'Grammar')
| -rw-r--r-- | Grammar/Grammar | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Grammar/Grammar b/Grammar/Grammar index 27cf1cbbb8a..3f2b4ef1c60 100644 --- a/Grammar/Grammar +++ b/Grammar/Grammar @@ -80,7 +80,7 @@ arith_expr: term (('+'|'-') term)* term: factor (('*'|'/'|'%'|'//') factor)* factor: ('+'|'-'|'~') factor | power power: atom trailer* ['**' factor] -atom: '(' [testlist] ')' | '[' [listmaker] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING+ +atom: '(' [testlist] ')' | '[' [listmaker] ']' | '{' [dictmaker] '}' | '`' testlist1 '`' | NAME | NUMBER | STRING+ listmaker: test ( list_for | (',' test)* [','] ) lambdef: 'lambda' [varargslist] ':' test trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME @@ -100,3 +100,5 @@ argument: [test '='] test # Really [keyword '='] test list_iter: list_for | list_if list_for: 'for' exprlist 'in' testlist_safe [list_iter] list_if: 'if' test [list_iter] + +testlist1: test (',' test)* |