Question

我正在尝试将泡菜格式的数据集加载到R中。由于以下问题，我发现程序包“成网状”：

Reading a pickle file (PANDAS Python Data Frame) in R

这是我的Python文件，名为“ pickle_reader.py”

def read_pickle_file(file):
    pickle_data = pd.read_pickle(file)
    return pickle_data

这是我的R代码：

library(reticulate)
use_python("/usr/bin/python3", required = T)
source_python("pickle_reader.py")
pickle_data <- read_pickle_file("/path/to/file.pkl")

R中出现以下错误消息：

Error in py_call_impl(callable, dots$args, dots$keywords) : 
  ValueError: unsupported pickle protocol: 4

Detailed traceback: 
  File "<string>", line 11, in read_pickle_file
  File "/usr/lib/python2.7/dist-packages/pandas/io/pickle.py", line 60, in read_pickle
    return try_read(path)
  File "/usr/lib/python2.7/dist-packages/pandas/io/pickle.py", line 57, in try_read
    return pc.load(fh, encoding=encoding, compat=True)
  File "/usr/lib/python2.7/dist-packages/pandas/compat/pickle_compat.py", line 116, in load
    return up.load()
  File "/usr/lib/python2.7/pickle.py", line 864, in load
    dispatch[key](self)
  File "/usr/lib/python2.7/pickle.py", line 892, in load_proto
    raise ValueError, "unsupported pickle protocol: %d" % proto

因此似乎发生了错误，因为Python 2.7无法处理pickle协议。因此，我使用

use_python("/usr/bin/python3", required = T)

以上。但这似乎没有效果。 py_discover_config()的输出是：

python:         /usr/bin/python3
libpython:      /usr/lib/python3.5/config-3.5m-x86_64-linux-gnu/libpython3.5.so
pythonhome:     /usr:/usr
version:        3.5.2 (default, Nov 23 2017, 16:37:01)  [GCC 5.4.0 20160609]
numpy:          /usr/local/lib/python3.5/dist-packages/numpy
numpy_version:  1.14.2

NOTE: Python version was forced by use_python function

py_config()的输出是：

python:         /usr/bin/python
libpython:      /usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so
pythonhome:     /usr:/usr
version:        2.7.12 (default, Dec  4 2017, 14:50:18)  [GCC 5.4.0 20160609]
numpy:          /usr/lib/python2.7/dist-packages/numpy
numpy_version:  1.11.0

python versions found: 
 /usr/bin/python
 /usr/bin/python3

网格包-更改python版本

0 个答案: