python - 在 Python 中初始化 H2O

Question

当尝试通过运行以下行在 Python 中初始化 H2O 时:

import h2o
h2o.init()

我得到了异常(exception):

Traceback (most recent call last):
  File "C:/workspace/DataScience/univariate_analysis/prudential_RF.py", line 4, in 
    h2o.init()
  File "C:\Anaconda\lib\site-packages\h2o\h2o.py", line 668, in init
    H2OConnection(ip=ip, port=port,start_h2o=start_h2o,enable_assertions=enable_assertions,license=license,max_mem_size_GB=max_mem_size_GB,min_mem_size_GB=min_mem_size_GB,ice_root=ice_root,strict_version_check=strict_version_check)
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 101, in __init__
    raise EnvironmentError, message
EnvironmentError: Version mismatch. H2O is version 3.2.0.9, but the python package is version 3.6.0.8.
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "C:\Anaconda\lib\atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 565, in end_session
    H2OConnection.delete(url_suffix="InitID")
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 393, in delete
    return __H2OCONN__._do_raw_rest(url_suffix, "DELETE", None, **kwargs)
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 483, in _do_raw_rest
    .format(http_result.status_code,http_result.reason,method,url,detailed_error_msgs))
EnvironmentError: h2o-py got an unexpected HTTP status code:
 404 Not Found (method = DELETE; url = http://localhost:54321/3/InitID). 
detailed error messages: DELETE /3/InitID not found
Error in sys.exitfunc:
Traceback (most recent call last):
  File "C:\Anaconda\lib\atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 565, in end_session
    H2OConnection.delete(url_suffix="InitID")
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 393, in delete
    return __H2OCONN__._do_raw_rest(url_suffix, "DELETE", None, **kwargs)
  File "C:\Anaconda\lib\site-packages\h2o\connection.py", line 483, in _do_raw_rest
    .format(http_result.status_code,http_result.reason,method,url,detailed_error_msgs))
EnvironmentError: h2o-py got an unexpected HTTP status code:
 404 Not Found (method = DELETE; url = http://localhost:54321/3/InitID). 
detailed error messages: DELETE /3/InitID not found

请注意，我已按照此链接 Use H2O directly from Python 中的安装步骤进行操作。

Answer 1

您的 h2o python 代码和 h2o java 代码版本不匹配。

如果您download a fresh version of h2o ，确保您还使用相同的版本号进行 pip 安装。 不要使用通用的 pip 安装...而是明确指定 URL 和版本。

Download the java package并启动java jar:

然后还可以单击安装 python 链接来获取相应的 pip install 命令:

请注意，此行需要与您刚刚安装的 java 版本号匹配:

pip install http://h2o-release.s3.amazonaws.com/h2o/reltibshirani/8/Python/h2o-3.6.0.8-py2.py3-none-any.whl

然后再试一次:

import h2o
h2o.init()

希望这有帮助!