And, finally, make sure to include the versions of your packages. Specifically, show us the output of qml.about().
Hello,
I use the following lines to load a pennylane dataset:
import pennylane as qml
H2datasets = qml.data.load("qchem", molname="H2O", basis="STO-3G", bondlength=1.1)
This works fine when I execute it for the first time. The dataset is saved in ‘./datasets/qchem/H2O’, as expected. If I now execute the line again, from what I understood from the documentation, the dataset should now be loaded from the saved file. However, I get the following error message:
ConnectionRefusedError Traceback (most recent call last)
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/connector.py:1025, in TCPConnector._wrap_create_connection(self, req, timeout, client_error, *args, **kwargs)
1022 async with ceil_timeout(
1023 timeout.sock_connect, ceil_threshold=timeout.ceil_threshold
1024 ):
-> 1025 return await self._loop.create_connection(*args, **kwargs)
1026 except cert_errors as exc:
File ~/.pyenv/versions/3.11.9/lib/python3.11/asyncio/base_events.py:1086, in BaseEventLoop.create_connection(self, protocol_factory, host, port, ssl, family, proto, flags, sock, local_addr, server_hostname, ssl_handshake_timeout, ssl_shutdown_timeout, happy_eyeballs_delay, interleave)
1085 if len(exceptions) == 1:
-> 1086 raise exceptions[0]
1087 else:
1088 # If they all have the same str(), raise one.
File ~/.pyenv/versions/3.11.9/lib/python3.11/asyncio/base_events.py:1070, in BaseEventLoop.create_connection(self, protocol_factory, host, port, ssl, family, proto, flags, sock, local_addr, server_hostname, ssl_handshake_timeout, ssl_shutdown_timeout, happy_eyeballs_delay, interleave)
1069 try:
-> 1070 sock = await self._connect_sock(
1071 exceptions, addrinfo, laddr_infos)
1072 break
File ~/.pyenv/versions/3.11.9/lib/python3.11/asyncio/base_events.py:974, in BaseEventLoop._connect_sock(self, exceptions, addr_info, local_addr_infos)
973 raise OSError(f"no matching local address with {family=} found")
--> 974 await self.sock_connect(sock, address)
975 return sock
File ~/.pyenv/versions/3.11.9/lib/python3.11/asyncio/selector_events.py:638, in BaseSelectorEventLoop.sock_connect(self, sock, address)
637 try:
--> 638 return await fut
639 finally:
640 # Needed to break cycles when an exception occurs.
File ~/.pyenv/versions/3.11.9/lib/python3.11/asyncio/selector_events.py:678, in BaseSelectorEventLoop._sock_connect_cb(self, fut, sock, address)
676 if err != 0:
677 # Jump to any except clause below.
--> 678 raise OSError(err, f'Connect call failed {address}')
679 except (BlockingIOError, InterruptedError):
680 # socket is still registered, the callback will be retried later
ConnectionRefusedError: [Errno 111] Connect call failed ('18.66.102.109', 443)
The above exception was the direct cause of the following exception:
ClientConnectorError Traceback (most recent call last)
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/implementations/http.py:422, in HTTPFileSystem._info(self, url, **kwargs)
420 try:
421 info.update(
--> 422 await _file_info(
423 self.encode_url(url),
424 size_policy=policy,
425 session=session,
426 **self.kwargs,
427 **kwargs,
428 )
429 )
430 if info.get("size") is not None:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/implementations/http.py:831, in _file_info(url, session, size_policy, **kwargs)
830 elif size_policy == "get":
--> 831 r = await session.get(url, allow_redirects=ar, **kwargs)
832 else:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/client.py:581, in ClientSession._request(self, method, str_or_url, params, data, json, cookies, headers, skip_auto_headers, auth, allow_redirects, max_redirects, compress, chunked, expect100, raise_for_status, read_until_eof, proxy, proxy_auth, timeout, verify_ssl, fingerprint, ssl_context, ssl, server_hostname, proxy_headers, trace_request_ctx, read_bufsize, auto_decompress, max_line_size, max_field_size)
580 assert self._connector is not None
--> 581 conn = await self._connector.connect(
582 req, traces=traces, timeout=real_timeout
583 )
584 except asyncio.TimeoutError as exc:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/connector.py:544, in BaseConnector.connect(self, req, traces, timeout)
543 try:
--> 544 proto = await self._create_connection(req, traces, timeout)
545 if self._closed:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/connector.py:944, in TCPConnector._create_connection(self, req, traces, timeout)
943 else:
--> 944 _, proto = await self._create_direct_connection(req, traces, timeout)
946 return proto
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/connector.py:1257, in TCPConnector._create_direct_connection(self, req, traces, timeout, client_error)
1256 assert last_exc is not None
-> 1257 raise last_exc
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/connector.py:1226, in TCPConnector._create_direct_connection(self, req, traces, timeout, client_error)
1225 try:
-> 1226 transp, proto = await self._wrap_create_connection(
1227 self._factory,
1228 host,
1229 port,
1230 timeout=timeout,
1231 ssl=sslcontext,
1232 family=hinfo["family"],
1233 proto=hinfo["proto"],
1234 flags=hinfo["flags"],
1235 server_hostname=server_hostname,
1236 local_addr=self._local_addr,
1237 req=req,
1238 client_error=client_error,
1239 )
1240 except ClientConnectorError as exc:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/aiohttp/connector.py:1033, in TCPConnector._wrap_create_connection(self, req, timeout, client_error, *args, **kwargs)
1032 raise
-> 1033 raise client_error(req.connection_key, exc) from exc
ClientConnectorError: Cannot connect to host datasets.cloud.pennylane.ai:443 ssl:default [Connect call failed ('18.66.102.109', 443)]
The above exception was the direct cause of the following exception:
FileNotFoundError Traceback (most recent call last)
/home/cai/PennylaneDatasetMolecularScaling/test_loading_dataset.py in line 3
61 #%%
62 import pennylane as qml
----> 63 H2datasets = qml.data.load("qchem", molname="H2O", basis="STO-3G", bondlength=1.1)
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/pennylane/data/data_manager/__init__.py:279, in load(data_name, attributes, folder_path, force, num_threads, block_size, **params)
277 for result in results.done:
278 if result.exception() is not None:
--> 279 raise result.exception()
281 return [Dataset.open(Path(dest_path), "a") for dest_path in dest_paths]
File ~/.pyenv/versions/3.11.9/lib/python3.11/concurrent/futures/thread.py:58, in _WorkItem.run(self)
55 return
57 try:
---> 58 result = self.fn(*self.args, **self.kwargs)
59 except BaseException as exc:
60 self.future.set_exception(exc)
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/pennylane/data/data_manager/__init__.py:132, in _download_dataset(data_path, dest, attributes, block_size, force)
129 s3_url = f"{S3_URL}/{url_safe_datapath}"
131 if attributes is not None or dest.exists():
--> 132 _download_partial(
133 s3_url, dest=dest, attributes=attributes, overwrite=force, block_size=block_size
134 )
135 else:
136 _download_full(s3_url, dest=dest)
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/pennylane/data/data_manager/__init__.py:84, in _download_partial(s3_url, dest, attributes, overwrite, block_size)
82 attributes_to_fetch.update(attributes)
83 else:
---> 84 remote_dataset = Dataset(open_hdf5_s3(s3_url, block_size=block_size))
85 attributes_to_fetch.update(remote_dataset.attrs)
87 if not overwrite:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/pennylane/data/base/hdf5.py:114, in open_hdf5_s3(s3_url, block_size)
111 memory_cache_args = {"cache_type": "mmap", "block_size": block_size}
112 fs = fsspec.open(s3_url, **memory_cache_args)
--> 114 return h5py.File(fs.open())
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/core.py:147, in OpenFile.open(self)
140 def open(self):
141 """Materialise this as a real open file without context
142
143 The OpenFile object should be explicitly closed to avoid enclosed file
144 instances persisting. You must, therefore, keep a reference to the OpenFile
145 during the life of the file-like it generates.
146 """
--> 147 return self.__enter__()
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/core.py:105, in OpenFile.__enter__(self)
102 mode = self.mode.replace("t", "").replace("b", "") + "b"
104 try:
--> 105 f = self.fs.open(self.path, mode=mode)
106 except FileNotFoundError as e:
107 if has_magic(self.path):
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/spec.py:1303, in AbstractFileSystem.open(self, path, mode, block_size, cache_options, compression, **kwargs)
1301 else:
1302 ac = kwargs.pop("autocommit", not self._intrans)
-> 1303 f = self._open(
1304 path,
1305 mode=mode,
1306 block_size=block_size,
1307 autocommit=ac,
1308 cache_options=cache_options,
1309 **kwargs,
1310 )
1311 if compression is not None:
1312 from fsspec.compression import compr
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/implementations/http.py:361, in HTTPFileSystem._open(self, path, mode, block_size, autocommit, cache_type, cache_options, size, **kwargs)
359 kw["asynchronous"] = self.asynchronous
360 kw.update(kwargs)
--> 361 size = size or self.info(path, **kwargs)["size"]
362 session = sync(self.loop, self.set_session)
363 if block_size and size:
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/asyn.py:118, in sync_wrapper.<locals>.wrapper(*args, **kwargs)
115 @functools.wraps(func)
116 def wrapper(*args, **kwargs):
117 self = obj or args[0]
--> 118 return sync(self.loop, func, *args, **kwargs)
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/asyn.py:103, in sync(loop, func, timeout, *args, **kwargs)
101 raise FSTimeoutError from return_result
102 elif isinstance(return_result, BaseException):
--> 103 raise return_result
104 else:
105 return return_result
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/asyn.py:56, in _runner(event, coro, result, timeout)
54 coro = asyncio.wait_for(coro, timeout=timeout)
55 try:
---> 56 result[0] = await coro
57 except Exception as ex:
58 result[0] = ex
File ~/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages/fsspec/implementations/http.py:435, in HTTPFileSystem._info(self, url, **kwargs)
432 except Exception as exc:
433 if policy == "get":
434 # If get failed, then raise a FileNotFoundError
--> 435 raise FileNotFoundError(url) from exc
436 logger.debug("", exc_info=exc)
438 return {"name": url, "size": None, **info, "type": "file"}
FileNotFoundError: https://datasets.cloud.pennylane.ai/datasets/h5/qchem/H2O/STO-3G/1.1/H2O_STO-3G_1.1.h5
Used versions:
Name: PennyLane
Version: 0.36.0
Summary: PennyLane is a cross-platform Python library for quantum computing, quantum machine learning, and quantum chemistry. Train a quantum computer the same way as a neural network.
Home-page: GitHub - PennyLaneAI/pennylane: PennyLane is a cross-platform Python library for quantum computing, quantum machine learning, and quantum chemistry. Train a quantum computer the same way as a neural network.
Author:
Author-email:
License: Apache License 2.0
Location: /home/cai/venvs/venv_pennylaneDatasets/lib/python3.11/site-packages
Requires: appdirs, autograd, autoray, cachetools, networkx, numpy, pennylane-lightning, requests, rustworkx, scipy, semantic-version, toml, typing-extensions
Required-by: PennyLane_Lightning
Platform info: Linux-5.4.0-182-generic-x86_64-with-glibc2.31
Python version: 3.11.9
Numpy version: 1.23.5
Scipy version: 1.13.1
Installed devices:
- default.clifford (PennyLane-0.36.0)
- default.gaussian (PennyLane-0.36.0)
- default.mixed (PennyLane-0.36.0)
- default.qubit (PennyLane-0.36.0)
- default.qubit.autograd (PennyLane-0.36.0)
- default.qubit.jax (PennyLane-0.36.0)
- default.qubit.legacy (PennyLane-0.36.0)
- default.qubit.tf (PennyLane-0.36.0)
- default.qubit.torch (PennyLane-0.36.0)
- default.qutrit (PennyLane-0.36.0)
- default.qutrit.mixed (PennyLane-0.36.0)
- null.qubit (PennyLane-0.36.0)
- lightning.qubit (PennyLane_Lightning-0.36.0)