bpo-39199: Use 'eval' mode for the examples with expression nodes (GH-18828)

Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com>

diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index ea3057867b0f0c925d3ff085de52e069509180de..01735643dbb9b8f468518645a7c5a4d36e8144bf 100644 (file)
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -139,12 +139,9 @@ Literals
 
    .. doctest::
 
-       >>> print(ast.dump(ast.parse("123"), indent=4))
-       Module(
-           body=[
-               Expr(
-                   value=Constant(value=123, kind=None))],
-           type_ignores=[])
+        >>> print(ast.dump(ast.parse('123', mode='eval'), indent=4))
+        Expression(
+            body=Constant(value=123, kind=None))
 
 
 .. class:: FormattedValue(value, conversion, format_spec)
@@ -174,29 +171,26 @@ Literals
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse('f"sin({a}) is {sin(a):.3}"'), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=JoinedStr(
-                        values=[
-                            Constant(value='sin(', kind=None),
-                            FormattedValue(
-                                value=Name(id='a', ctx=Load()),
-                                conversion=-1,
-                                format_spec=None),
-                            Constant(value=') is ', kind=None),
-                            FormattedValue(
-                                value=Call(
-                                    func=Name(id='sin', ctx=Load()),
-                                    args=[
-                                        Name(id='a', ctx=Load())],
-                                    keywords=[]),
-                                conversion=-1,
-                                format_spec=JoinedStr(
-                                    values=[
-                                        Constant(value='.3', kind=None)]))]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('f"sin({a}) is {sin(a):.3}"', mode='eval'), indent=4))
+        Expression(
+            body=JoinedStr(
+                values=[
+                    Constant(value='sin(', kind=None),
+                    FormattedValue(
+                        value=Name(id='a', ctx=Load()),
+                        conversion=-1,
+                        format_spec=None),
+                    Constant(value=') is ', kind=None),
+                    FormattedValue(
+                        value=Call(
+                            func=Name(id='sin', ctx=Load()),
+                            args=[
+                                Name(id='a', ctx=Load())],
+                            keywords=[]),
+                        conversion=-1,
+                        format_spec=JoinedStr(
+                            values=[
+                                Constant(value='.3', kind=None)]))]))
 
 
 .. class:: List(elts, ctx)
@@ -208,29 +202,22 @@ Literals
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("[1, 2, 3]"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=List(
-                        elts=[
-                            Constant(value=1, kind=None),
-                            Constant(value=2, kind=None),
-                            Constant(value=3, kind=None)],
-                        ctx=Load()))],
-            type_ignores=[])
-
-        >>> print(ast.dump(ast.parse("(1, 2, 3)"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Tuple(
-                        elts=[
-                            Constant(value=1, kind=None),
-                            Constant(value=2, kind=None),
-                            Constant(value=3, kind=None)],
-                        ctx=Load()))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('[1, 2, 3]', mode='eval'), indent=4))
+        Expression(
+            body=List(
+                elts=[
+                    Constant(value=1, kind=None),
+                    Constant(value=2, kind=None),
+                    Constant(value=3, kind=None)],
+                ctx=Load()))
+        >>> print(ast.dump(ast.parse('(1, 2, 3)', mode='eval'), indent=4))
+        Expression(
+            body=Tuple(
+                elts=[
+                    Constant(value=1, kind=None),
+                    Constant(value=2, kind=None),
+                    Constant(value=3, kind=None)],
+                ctx=Load()))
 
 
 .. class:: Set(elts)
@@ -239,16 +226,13 @@ Literals
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("{1, 2, 3}"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Set(
-                        elts=[
-                            Constant(value=1, kind=None),
-                            Constant(value=2, kind=None),
-                            Constant(value=3, kind=None)]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('{1, 2, 3}', mode='eval'), indent=4))
+        Expression(
+            body=Set(
+                elts=[
+                    Constant(value=1, kind=None),
+                    Constant(value=2, kind=None),
+                    Constant(value=3, kind=None)]))
 
 
 .. class:: Dict(keys, values)
@@ -263,18 +247,15 @@ Literals
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("{'a':1, **d}"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Dict(
-                        keys=[
-                            Constant(value='a', kind=None),
-                            None],
-                        values=[
-                            Constant(value=1, kind=None),
-                            Name(id='d', ctx=Load())]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('{"a":1, **d}', mode='eval'), indent=4))
+        Expression(
+            body=Dict(
+                keys=[
+                    Constant(value='a', kind=None),
+                    None],
+                values=[
+                    Constant(value=1, kind=None),
+                    Name(id='d', ctx=Load())]))
 
 
 Variables
@@ -385,14 +366,11 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("not x"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=UnaryOp(
-                        op=Not(),
-                        operand=Name(id='x', ctx=Load())))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('not x', mode='eval'), indent=4))
+        Expression(
+            body=UnaryOp(
+                op=Not(),
+                operand=Name(id='x', ctx=Load())))
 
 
 .. class:: BinOp(left, op, right)
@@ -402,15 +380,12 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("x + y"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=BinOp(
-                        left=Name(id='x', ctx=Load()),
-                        op=Add(),
-                        right=Name(id='y', ctx=Load())))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('x + y', mode='eval'), indent=4))
+        Expression(
+            body=BinOp(
+                left=Name(id='x', ctx=Load()),
+                op=Add(),
+                right=Name(id='y', ctx=Load())))
 
 
 .. class:: Add
@@ -441,16 +416,13 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("x or y"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=BoolOp(
-                        op=Or(),
-                        values=[
-                            Name(id='x', ctx=Load()),
-                            Name(id='y', ctx=Load())]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('x or y', mode='eval'), indent=4))
+        Expression(
+            body=BoolOp(
+                op=Or(),
+                values=[
+                    Name(id='x', ctx=Load()),
+                    Name(id='y', ctx=Load())]))
 
 
 .. class:: And
@@ -467,19 +439,16 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("1 < a < 10"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Compare(
-                        left=Constant(value=1, kind=None),
-                        ops=[
-                            Lt(),
-                            Lt()],
-                        comparators=[
-                            Name(id='a', ctx=Load()),
-                            Constant(value=10, kind=None)]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('1 <= a < 10', mode='eval'), indent=4))
+        Expression(
+            body=Compare(
+                left=Constant(value=1, kind=None),
+                ops=[
+                    LtE(),
+                    Lt()],
+                comparators=[
+                    Name(id='a', ctx=Load()),
+                    Constant(value=10, kind=None)]))
 
 
 .. class:: Eq
@@ -510,25 +479,22 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse('func(a, b=c, *d, **e)'), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Call(
-                        func=Name(id='func', ctx=Load()),
-                        args=[
-                            Name(id='a', ctx=Load()),
-                            Starred(
-                                value=Name(id='d', ctx=Load()),
-                                ctx=Load())],
-                        keywords=[
-                            keyword(
-                                arg='b',
-                                value=Name(id='c', ctx=Load())),
-                            keyword(
-                                arg=None,
-                                value=Name(id='e', ctx=Load()))]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('func(a, b=c, *d, **e)', mode='eval'), indent=4))
+        Expression(
+            body=Call(
+                func=Name(id='func', ctx=Load()),
+                args=[
+                    Name(id='a', ctx=Load()),
+                    Starred(
+                        value=Name(id='d', ctx=Load()),
+                        ctx=Load())],
+                keywords=[
+                    keyword(
+                        arg='b',
+                        value=Name(id='c', ctx=Load())),
+                    keyword(
+                        arg=None,
+                        value=Name(id='e', ctx=Load()))]))
 
 
 .. class:: keyword(arg, value)
@@ -544,15 +510,12 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("a if b else c"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=IfExp(
-                        test=Name(id='b', ctx=Load()),
-                        body=Name(id='a', ctx=Load()),
-                        orelse=Name(id='c', ctx=Load())))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('a if b else c', mode='eval'), indent=4))
+        Expression(
+            body=IfExp(
+                test=Name(id='b', ctx=Load()),
+                body=Name(id='a', ctx=Load()),
+                orelse=Name(id='c', ctx=Load())))
 
 
 .. class:: Attribute(value, attr, ctx)
@@ -564,15 +527,12 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse('snake.colour'), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Attribute(
-                        value=Name(id='snake', ctx=Load()),
-                        attr='colour',
-                        ctx=Load()))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('snake.colour', mode='eval'), indent=4))
+        Expression(
+            body=Attribute(
+                value=Name(id='snake', ctx=Load()),
+                attr='colour',
+                ctx=Load()))
 
 
 .. class:: NamedExpr(target, value)
@@ -584,14 +544,11 @@ Expressions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("(x := 4)"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=NamedExpr(
-                        target=Name(id='x', ctx=Store()),
-                        value=Constant(value=4, kind=None)))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('(x := 4)', mode='eval'), indent=4))
+        Expression(
+            body=NamedExpr(
+                target=Name(id='x', ctx=Store()),
+                value=Constant(value=4, kind=None)))
 
 
 Subscripting
@@ -611,16 +568,13 @@ Subscripting
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse('l[1]'), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Subscript(
-                        value=Name(id='l', ctx=Load()),
-                        slice=Index(
-                            value=Constant(value=1, kind=None)),
-                        ctx=Load()))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('l[1]', mode='eval'), indent=4))
+        Expression(
+            body=Subscript(
+                value=Name(id='l', ctx=Load()),
+                slice=Index(
+                    value=Constant(value=1, kind=None)),
+                ctx=Load()))
 
 
 .. class:: Slice(lower, upper, step)
@@ -629,18 +583,15 @@ Subscripting
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse('l[1:2]'), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Subscript(
-                        value=Name(id='l', ctx=Load()),
-                        slice=Slice(
-                            lower=Constant(value=1, kind=None),
-                            upper=Constant(value=2, kind=None),
-                            step=None),
-                        ctx=Load()))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('l[1:2]', mode='eval'), indent=4))
+        Expression(
+            body=Subscript(
+                value=Name(id='l', ctx=Load()),
+                slice=Slice(
+                    lower=Constant(value=1, kind=None),
+                    upper=Constant(value=2, kind=None),
+                    step=None),
+                ctx=Load()))
 
 
 .. class:: ExtSlice(dims)
@@ -650,22 +601,19 @@ Subscripting
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse('l[1:2, 3]'), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=Subscript(
-                        value=Name(id='l', ctx=Load()),
-                        slice=ExtSlice(
-                            dims=[
-                                Slice(
-                                    lower=Constant(value=1, kind=None),
-                                    upper=Constant(value=2, kind=None),
-                                    step=None),
-                                Index(
-                                    value=Constant(value=3, kind=None))]),
-                        ctx=Load()))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('l[1:2, 3]', mode='eval'), indent=4))
+        Expression(
+            body=Subscript(
+                value=Name(id='l', ctx=Load()),
+                slice=ExtSlice(
+                    dims=[
+                        Slice(
+                            lower=Constant(value=1, kind=None),
+                            upper=Constant(value=2, kind=None),
+                            step=None),
+                        Index(
+                            value=Constant(value=3, kind=None))]),
+                ctx=Load()))
 
 
 Comprehensions
@@ -684,51 +632,40 @@ Comprehensions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("[x for x in numbers]"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=ListComp(
-                        elt=Name(id='x', ctx=Load()),
-                        generators=[
-                            comprehension(
-                                target=Name(id='x', ctx=Store()),
-                                iter=Name(id='numbers', ctx=Load()),
-                                ifs=[],
-                                is_async=0)]))],
-            type_ignores=[])
-
-        >>> print(ast.dump(ast.parse("{x: x**2 for x in numbers}"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=DictComp(
-                        key=Name(id='x', ctx=Load()),
-                        value=BinOp(
-                            left=Name(id='x', ctx=Load()),
-                            op=Pow(),
-                            right=Constant(value=2, kind=None)),
-                        generators=[
-                            comprehension(
-                                target=Name(id='x', ctx=Store()),
-                                iter=Name(id='numbers', ctx=Load()),
-                                ifs=[],
-                                is_async=0)]))],
-            type_ignores=[])
-
-        >>> print(ast.dump(ast.parse("{x for x in numbers}"), indent=4))
-        Module(
-            body=[
-                Expr(
-                    value=SetComp(
-                        elt=Name(id='x', ctx=Load()),
-                        generators=[
-                            comprehension(
-                                target=Name(id='x', ctx=Store()),
-                                iter=Name(id='numbers', ctx=Load()),
-                                ifs=[],
-                                is_async=0)]))],
-            type_ignores=[])
+        >>> print(ast.dump(ast.parse('[x for x in numbers]', mode='eval'), indent=4))
+        Expression(
+            body=ListComp(
+                elt=Name(id='x', ctx=Load()),
+                generators=[
+                    comprehension(
+                        target=Name(id='x', ctx=Store()),
+                        iter=Name(id='numbers', ctx=Load()),
+                        ifs=[],
+                        is_async=0)]))
+        >>> print(ast.dump(ast.parse('{x: x**2 for x in numbers}', mode='eval'), indent=4))
+        Expression(
+            body=DictComp(
+                key=Name(id='x', ctx=Load()),
+                value=BinOp(
+                    left=Name(id='x', ctx=Load()),
+                    op=Pow(),
+                    right=Constant(value=2, kind=None)),
+                generators=[
+                    comprehension(
+                        target=Name(id='x', ctx=Store()),
+                        iter=Name(id='numbers', ctx=Load()),
+                        ifs=[],
+                        is_async=0)]))
+        >>> print(ast.dump(ast.parse('{x for x in numbers}', mode='eval'), indent=4))
+        Expression(
+            body=SetComp(
+                elt=Name(id='x', ctx=Load()),
+                generators=[
+                    comprehension(
+                        target=Name(id='x', ctx=Store()),
+                        iter=Name(id='numbers', ctx=Load()),
+                        ifs=[],
+                        is_async=0)]))
 
 
 .. class:: comprehension(target, iter, ifs, is_async)
@@ -743,7 +680,7 @@ Comprehensions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("[ord(c) for line in file for c in line]", mode='eval'),
+        >>> print(ast.dump(ast.parse('[ord(c) for line in file for c in line]', mode='eval'),
         ...                indent=4)) # Multiple comprehensions in one.
         Expression(
             body=ListComp(
@@ -764,7 +701,7 @@ Comprehensions
                         ifs=[],
                         is_async=0)]))
 
-        >>> print(ast.dump(ast.parse("(n**2 for n in it if n>5 if n<10)", mode='eval'),
+        >>> print(ast.dump(ast.parse('(n**2 for n in it if n>5 if n<10)', mode='eval'),
         ...                indent=4)) # generator comprehension
         Expression(
             body=GeneratorExp(
@@ -791,35 +728,17 @@ Comprehensions
                                     Constant(value=10, kind=None)])],
                         is_async=0)]))
 
-        >>> print(ast.dump(ast.parse("async def f():"
-        ...                          "   return [i async for i in soc]"),
+        >>> print(ast.dump(ast.parse('[i async for i in soc]', mode='eval'),
         ...                indent=4)) # Async comprehension
-        Module(
-            body=[
-                AsyncFunctionDef(
-                    name='f',
-                    args=arguments(
-                        posonlyargs=[],
-                        args=[],
-                        vararg=None,
-                        kwonlyargs=[],
-                        kw_defaults=[],
-                        kwarg=None,
-                        defaults=[]),
-                    body=[
-                        Return(
-                            value=ListComp(
-                                elt=Name(id='i', ctx=Load()),
-                                generators=[
-                                    comprehension(
-                                        target=Name(id='i', ctx=Store()),
-                                        iter=Name(id='soc', ctx=Load()),
-                                        ifs=[],
-                                        is_async=1)]))],
-                    decorator_list=[],
-                    returns=None,
-                    type_comment=None)],
-            type_ignores=[])
+        Expression(
+            body=ListComp(
+                elt=Name(id='i', ctx=Load()),
+                generators=[
+                    comprehension(
+                        target=Name(id='i', ctx=Store()),
+                        iter=Name(id='soc', ctx=Load()),
+                        ifs=[],
+                        is_async=1)]))
 
 Statements
 ^^^^^^^^^^
@@ -838,7 +757,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("a = b = 1"), indent=4)) # Multiple assignment
+        >>> print(ast.dump(ast.parse('a = b = 1'), indent=4)) # Multiple assignment
         Module(
             body=[
                 Assign(
@@ -849,7 +768,7 @@ Statements
                     type_comment=None)],
             type_ignores=[])
 
-        >>> print(ast.dump(ast.parse("a,b = c"), indent=4)) # Unpacking
+        >>> print(ast.dump(ast.parse('a,b = c'), indent=4)) # Unpacking
         Module(
             body=[
                 Assign(
@@ -875,7 +794,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("c: int"), indent=4))
+        >>> print(ast.dump(ast.parse('c: int'), indent=4))
         Module(
             body=[
                 AnnAssign(
@@ -885,7 +804,7 @@ Statements
                     simple=1)],
             type_ignores=[])
 
-        >>> print(ast.dump(ast.parse("(a): int = 1"), indent=4)) # Annotation with parenthesis
+        >>> print(ast.dump(ast.parse('(a): int = 1'), indent=4)) # Annotation with parenthesis
         Module(
             body=[
                 AnnAssign(
@@ -895,7 +814,7 @@ Statements
                     simple=0)],
             type_ignores=[])
 
-        >>> print(ast.dump(ast.parse("a.b: int"), indent=4)) # Attribute annotation
+        >>> print(ast.dump(ast.parse('a.b: int'), indent=4)) # Attribute annotation
         Module(
             body=[
                 AnnAssign(
@@ -908,7 +827,7 @@ Statements
                     simple=0)],
             type_ignores=[])
 
-        >>> print(ast.dump(ast.parse("a[1]: int"), indent=4)) # Subscript annotation
+        >>> print(ast.dump(ast.parse('a[1]: int'), indent=4)) # Subscript annotation
         Module(
             body=[
                 AnnAssign(
@@ -935,7 +854,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("x += 2"), indent=4))
+        >>> print(ast.dump(ast.parse('x += 2'), indent=4))
         Module(
             body=[
                 AugAssign(
@@ -953,7 +872,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("raise x from y"), indent=4))
+        >>> print(ast.dump(ast.parse('raise x from y'), indent=4))
         Module(
             body=[
                 Raise(
@@ -969,7 +888,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("assert x,y"), indent=4))
+        >>> print(ast.dump(ast.parse('assert x,y'), indent=4))
         Module(
             body=[
                 Assert(
@@ -985,7 +904,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("del x,y,z"), indent=4))
+        >>> print(ast.dump(ast.parse('del x,y,z'), indent=4))
         Module(
             body=[
                 Delete(
@@ -1002,7 +921,7 @@ Statements
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("pass"), indent=4))
+        >>> print(ast.dump(ast.parse('pass'), indent=4))
         Module(
             body=[
                 Pass()],
@@ -1021,7 +940,7 @@ Imports
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("import x,y,z"), indent=4))
+        >>> print(ast.dump(ast.parse('import x,y,z'), indent=4))
         Module(
             body=[
                 Import(
@@ -1041,7 +960,7 @@ Imports
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("from y import x,y,z"), indent=4))
+        >>> print(ast.dump(ast.parse('from y import x,y,z'), indent=4))
         Module(
             body=[
                 ImportFrom(
@@ -1061,7 +980,7 @@ Imports
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("from ..foo.bar import a as b, c"), indent=4))
+        >>> print(ast.dump(ast.parse('from ..foo.bar import a as b, c'), indent=4))
         Module(
             body=[
                 ImportFrom(
@@ -1368,7 +1287,7 @@ Function and class definitions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("lambda x,y: ..."), indent=4))
+        >>> print(ast.dump(ast.parse('lambda x,y: ...'), indent=4))
         Module(
             body=[
                 Expr(
@@ -1459,7 +1378,7 @@ Function and class definitions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("return 4"), indent=4))
+        >>> print(ast.dump(ast.parse('return 4'), indent=4))
         Module(
             body=[
                 Return(
@@ -1475,7 +1394,7 @@ Function and class definitions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("yield x"), indent=4))
+        >>> print(ast.dump(ast.parse('yield x'), indent=4))
         Module(
             body=[
                 Expr(
@@ -1483,7 +1402,7 @@ Function and class definitions
                         value=Name(id='x', ctx=Load())))],
             type_ignores=[])
 
-        >>> print(ast.dump(ast.parse("yield from x"), indent=4))
+        >>> print(ast.dump(ast.parse('yield from x'), indent=4))
         Module(
             body=[
                 Expr(
@@ -1499,7 +1418,7 @@ Function and class definitions
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("global x,y,z"), indent=4))
+        >>> print(ast.dump(ast.parse('global x,y,z'), indent=4))
         Module(
             body=[
                 Global(
@@ -1509,7 +1428,7 @@ Function and class definitions
                         'z'])],
             type_ignores=[])
 
-        >>> print(ast.dump(ast.parse("nonlocal x,y,z"), indent=4))
+        >>> print(ast.dump(ast.parse('nonlocal x,y,z'), indent=4))
         Module(
             body=[
                 Nonlocal(