Python ast 模块，ExtSlice() 实例源码

我们从Python开源项目中，提取了以下8个代码示例，用于说明如何使用ast.ExtSlice()。

项目：pyt 作者：python-security | 项目源码 | 文件源码

def slicev(self, node):
        if isinstance(node, ast.Slice):
            if node.lower:
                self.visit(node.lower)
            if node.upper:
                self.visit(node.upper)
            if node.step:
                self.visit(node.step)
        elif isinstance(node, ast.ExtSlice):
            if node.dims:
                for d in node.dims:
                    self.visit(d)
        else:
            self.visit(node.value)

    #  operator = Add | Sub | Mult | MatMult | Div | Mod | Pow | LShift | RShift | BitOr | BitXor | BitAnd | FloorDiv

项目：web_ctp 作者：molebot | 项目源码 | 文件源码

def test_subscript(self):
        sub = ast.Subscript(ast.Name("x", ast.Store()), ast.Index(ast.Num(3)),
                            ast.Load())
        self.expr(sub, "must have Load context")
        x = ast.Name("x", ast.Load())
        sub = ast.Subscript(x, ast.Index(ast.Name("y", ast.Store())),
                            ast.Load())
        self.expr(sub, "must have Load context")
        s = ast.Name("x", ast.Store())
        for args in (s, None, None), (None, s, None), (None, None, s):
            sl = ast.Slice(*args)
            self.expr(ast.Subscript(x, sl, ast.Load()),
                      "must have Load context")
        sl = ast.ExtSlice([])
        self.expr(ast.Subscript(x, sl, ast.Load()), "empty dims on ExtSlice")
        sl = ast.ExtSlice([ast.Index(s)])
        self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")

项目：ouroboros 作者：pybee | 项目源码 | 文件源码

def test_subscript(self):
        sub = ast.Subscript(ast.Name("x", ast.Store()), ast.Index(ast.Num(3)),
                            ast.Load())
        self.expr(sub, "must have Load context")
        x = ast.Name("x", ast.Load())
        sub = ast.Subscript(x, ast.Index(ast.Name("y", ast.Store())),
                            ast.Load())
        self.expr(sub, "must have Load context")
        s = ast.Name("x", ast.Store())
        for args in (s, None, None), (None, s, None), (None, None, s):
            sl = ast.Slice(*args)
            self.expr(ast.Subscript(x, sl, ast.Load()),
                      "must have Load context")
        sl = ast.ExtSlice([])
        self.expr(ast.Subscript(x, sl, ast.Load()), "empty dims on ExtSlice")
        sl = ast.ExtSlice([ast.Index(s)])
        self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")

项目：kbe_server 作者：xiaohaoppy | 项目源码 | 文件源码

def test_subscript(self):
        sub = ast.Subscript(ast.Name("x", ast.Store()), ast.Index(ast.Num(3)),
                            ast.Load())
        self.expr(sub, "must have Load context")
        x = ast.Name("x", ast.Load())
        sub = ast.Subscript(x, ast.Index(ast.Name("y", ast.Store())),
                            ast.Load())
        self.expr(sub, "must have Load context")
        s = ast.Name("x", ast.Store())
        for args in (s, None, None), (None, s, None), (None, None, s):
            sl = ast.Slice(*args)
            self.expr(ast.Subscript(x, sl, ast.Load()),
                      "must have Load context")
        sl = ast.ExtSlice([])
        self.expr(ast.Subscript(x, sl, ast.Load()), "empty dims on ExtSlice")
        sl = ast.ExtSlice([ast.Index(s)])
        self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")

项目：tidy 作者：cyrus- | 项目源码 | 文件源码

def syn_Subscript(self, ctx, e):
        slice_ = e.slice 
        if isinstance(slice_, ast.Ellipsis):
            raise _errors.TyError("stringing slice cannot be an Ellipsis.", e)
        elif isinstance(slice_, ast.ExtSlice):
            raise _errors.TyError("stringing slice can only have one dimension.", e)
        elif isinstance(slice_, ast.Index):
            ctx.ana(slice_.value, _numeric.num)
        else: # if isinstance(slice_, ast.Slice):
            lower, upper, step = slice_.lower, slice_.upper, slice_.step
            if lower is not None:
                ctx.ana(lower, _numeric.num)
            if upper is not None:
                ctx.ana(upper, _numeric.num)
            if not _is_None(step):
                ctx.ana(step, _numeric.num)
        return self

项目：pyt 作者：python-security | 项目源码 | 文件源码

def slicev(self, node):
        if isinstance(node, ast.Slice):
            if node.lower:
                self.visit(node.lower)
            if node.upper:
                self.visit(node.upper)
            if node.step:
                self.visit(node.step)
        elif isinstance(node, ast.ExtSlice):
            if node.dims:
                for d in node.dims:
                    self.visit(d)
        else:
            self.visit(node.value)

项目：TerpreT 作者：51alg | 项目源码 | 文件源码

def make_unconcat_slice(axis, lower, upper):
    dims = []
    for i in range(axis):
        dims.append(ast.Slice(lower=None, upper=None, step=None))
    dims.append(ast.Slice(lower=lower, upper=upper, step=None))
    dims.append(ast.Ellipsis())

    ext_slice = ast.ExtSlice(dims=dims)

    return ext_slice

项目：peval 作者：fjarri | 项目源码 | 文件源码

def handle_Subscript(state, node, ctx):
        state, value_result = _peval_expression(state, node.value, ctx)
        state, slice_result = _peval_expression(state, node.slice, ctx)
        if is_known_value(value_result) and is_known_value(slice_result):
            success, elem = try_call_method(
                value_result.value, '__getitem__', args=(slice_result.value,))
            if success:
                return state, KnownValue(value=elem)

        state, new_value = map_reify(state, value_result)
        state, new_slice = map_reify(state, slice_result)
        if type(new_slice) not in (ast.Index, ast.Slice, ast.ExtSlice):
            new_slice = ast.Index(value=new_slice)
        return state, replace_fields(node, value=new_value, slice=new_slice)