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authorYury Selivanov <yury@magic.io>2016-09-08 20:50:03 -0700
committerYury Selivanov <yury@magic.io>2016-09-08 20:50:03 -0700
commitb164476aaf77ceffac36ddbbdc7f4df90fbfebd3 (patch)
tree0a744472fe547a36f970c59528e48aebd01de75e /Lib/lib2to3/Grammar.txt
parent61f296e12ff25b48169250d726b92d589e0221af (diff)
downloadcpython-b164476aaf77ceffac36ddbbdc7f4df90fbfebd3.tar.gz
Issue #27985: Implement PEP 526 -- Syntax for Variable Annotations.
Patch by Ivan Levkivskyi.
Diffstat (limited to 'Lib/lib2to3/Grammar.txt')
-rw-r--r--Lib/lib2to3/Grammar.txt5
1 files changed, 3 insertions, 2 deletions
diff --git a/Lib/lib2to3/Grammar.txt b/Lib/lib2to3/Grammar.txt
index c954669e8a..abe1268c27 100644
--- a/Lib/lib2to3/Grammar.txt
+++ b/Lib/lib2to3/Grammar.txt
@@ -54,12 +54,13 @@ stmt: simple_stmt | compound_stmt
simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE
small_stmt: (expr_stmt | print_stmt | del_stmt | pass_stmt | flow_stmt |
import_stmt | global_stmt | exec_stmt | assert_stmt)
-expr_stmt: testlist_star_expr (augassign (yield_expr|testlist) |
+expr_stmt: testlist_star_expr (annassign | augassign (yield_expr|testlist) |
('=' (yield_expr|testlist_star_expr))*)
+annassign: ':' test ['=' test]
testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
'<<=' | '>>=' | '**=' | '//=')
-# For normal assignments, additional restrictions enforced by the interpreter
+# For normal and annotated assignments, additional restrictions enforced by the interpreter
print_stmt: 'print' ( [ test (',' test)* [','] ] |
'>>' test [ (',' test)+ [','] ] )
del_stmt: 'del' exprlist