df, tag = read_h5(h5ds, '05A0042285') print(df.shape, tag) print(df[:5])

这段代码读取了一个名为 '05A0042285' 的数据集，并输出了该数据集的形状和标签，以及前5行数据。具体来说，read_h5() 是一个自定义函数，用于从 HDF5 文件中读取数据集。该函数返回两个值，一个是数据集的内容，另一个是数据集的标签。df.shape 是用于获取数据集形状的属性，tag 是数据集的标签。最后一行代码 df[:5] 是用于输出数据集的前5行数据。

相关问题

IndexError Traceback (most recent call last) c:\Users\光明磊落\Desktop\python in line 158 156 cookie = 'cna=hXDyGqtYgloCAW887r8gThdy; _m_h5_tk=ad861ebf4756a39bbf90ca837ba6cec5_1660894819245; _m_h5_tk_enc=5175f8feb05a54b29d1eedaa0cfdf623; __ysuid=16608903198401Ay; __ayft=1660890319842; __aysid=1660890319842GSn; __ayscnt=1; modalFrequency={"UUID":"10"}; xlly_s=1;' 157 youku = YouKu(cookie) --> 158 youku.start()错在哪儿

这段代码中的错误可能是由于对象 YouKu 的 start 方法内部访问了一个超出范围的列表索引而导致的 IndexError。在该错误消息中，"IndexError" 表示这是一个索引错误，而 "c:\Users\光明磊落\Desktop\python in line 158 " 表示错误发生在代码的第 158 行。要解决这个问题，您需要检查代码中访问列表的索引是否正确，并确保不会尝试访问超出列表范围的值。如果您无法确定问题出在哪里，可以在代码中添加一些调试语句以帮助确定错误的位置。

2023-06-08T02:25:37.583259Z 1 [Note] WSREP: GCache history reset: 00000000-0000-0000-0000-000000000000:0 -> c443b2d8-05a0-11ee-86b8-2e0fddf21737:0 2023-06-08T02:25:39.261528Z WSREP_SST: [INFO] Streaming with xbstream 2023-06-08T02:25:39.273174Z WSREP_SST: [INFO] WARNING: Stale temporary SST directory: /data/mysql//.sst from previous state transfer. Removing 2023-06-08T02:25:39.279749Z WSREP_SST: [INFO] Proceeding with SST......... 2023-06-08T02:25:39.519583Z 0 [Note] WSREP: (c05c7a4e, 'tcp://0.0.0.0:4567') turning message relay requesting off 2023-06-08T02:25:39.553817Z WSREP_SST: [INFO] ............Waiting for SST streaming to complete! 2023-06-08T02:25:49.257301Z WSREP_SST: [ERROR] ******************* FATAL ERROR ********************** 2023-06-08T02:25:49.260159Z WSREP_SST: [ERROR] xtrabackup_checkpoints missing. xtrabackup/SST failed on DONOR. Check DONOR log 2023-06-08T02:25:49.262811Z WSREP_SST: [ERROR] ****************************************************** 2023-06-08T02:25:49.266472Z WSREP_SST: [ERROR] Cleanup after exit with status:2 2023-06-08T02:25:49.289335Z 0 [Warning] WSREP: 1.0 (host78): State transfer to 0.0 (host79) failed: -22 (Invalid argument) 2023-06-08T02:25:49.289400Z 0 [ERROR] WSREP: gcs/src/gcs_group.cpp:gcs_group_handle_join_msg():811: Will never receive state. Need to abort. 2023-06-08T02:25:49.289465Z 0 [Note] WSREP: gcomm: terminating thread 2023-06-08T02:25:49.289494Z 0 [Note] WSREP: gcomm: joining thread 2023-06-08T02:25:49.289662Z 0 [Note] WSREP: gcomm: closing backend 2023-06-08T02:25:49.593055Z 0 [ERROR] WSREP: Process completed with error: wsrep_sst_xtrabackup-v2 --role 'joiner' --address '10.106.113.79' --datadir '/data/mysql/' --defaults-file '/etc/my.cnf' --defaults-group-suffix '' --parent '9996' --mysqld-version '5.7.41-44-57' '' : 2 (No such file or directory) 2023-06-08T02:25:49.593124Z 0 [ERROR] WSREP: Failed to read uuid:seqno from joiner script. 2023-06-08T02:25:49.593137Z 0 [ERROR] WSREP: SST script aborted with error 2 (No such file or directory) 2023-06-08T02:25:49.593186Z 0 [ERROR] WSREP: SST failed: 2 (No such file or directory) 2023-06-08T02:25:49.593234Z 0 [ERROR] Aborting 2023-06-08T02:25:49.593269Z 0 [Note] WSREP: Signalling cancellation of the SST request. 2023-06-08T02:25:49.593306Z 0 [Note] WSREP: SST request was cancelled 2023-06-08T02:25:49.593337Z 0 [Note] Giving 2 client threads a chance to die gracefully 2023-06-08T02:25:49.593357Z 1 [Note] WSREP: Closing send monitor... 2023-06-08T02:25:49.593370Z 1 [Note] WSREP: Closed send monitor. 2023-06-08T02:25:50.292465Z 0 [Note] WSREP: Current view of cluster as seen by this node

这段日志是一个 MySQL 集群中的一台机器（DONOR）在进行 SST（State Snapshot Transfer）时出现了错误。从日志中可以看到，xtrabackup_checkpoints 文件缺失导致 SST 失败，需要检查 DONOR 日志文件，以找到原因。因为 SST 失败，其他节点（joiner）无法接收状态，集群需要终止。最后，WSREP 进程由于遇到错误而退出。