utils.py 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