Python调用R出现“UnicodeDecodeError: ‘utf-8‘ codec can‘t decode byte 0xb2” 问题

使用python的rpy2进行调用R

import os
os.environ['R_HOME'] = "C:\\Users\\aohan\\Project\\iris\\software\\R-4.2.1"
if "R-4.2.1" not in os.environ['path']:os.environ["PATH"] = "./software/R-4.2.1/bin/x64" + ";" + os.environ["PATH"]
from rpy2 import robjectsrobjects.r('''library(org.Hs.eg.db)''')

执行 robjects.r('''library(org.Hs.eg.db)''') 这句时报错：

Traceback (most recent call last):File "C:\app\python3.9\lib\asyncio\coroutines.py", line 124, in corores = func(*args, **kw)File "C:\Users\aohan\Project\iris\flow-gui\test\rcode\test1.py", line 36, in testrobjects.r('''library(org.Hs.eg.db)''')File "C:\app\python3.9\lib\site-packages\rpy2\robjects\__init__.py", line 459, in __call__res = self.eval(p)File "C:\app\python3.9\lib\site-packages\rpy2\robjects\functions.py", line 203, in __call__return (super(SignatureTranslatedFunction, self)File "C:\app\python3.9\lib\site-packages\rpy2\robjects\functions.py", line 126, in __call__res = super(Function, self).__call__(*new_args, **new_kwargs)File "C:\app\python3.9\lib\site-packages\rpy2\rinterface_lib\conversion.py", line 45, in _cdata = function(*args, **kwargs)File "C:\app\python3.9\lib\site-packages\rpy2\rinterface.py", line 815, in __call__raise embedded.RRuntimeError(_rinterface._geterrmessage())File "C:\app\python3.9\lib\site-packages\rpy2\rinterface_lib\_rinterface_capi.py", line 439, in _geterrmessageres = _string_getitem(res, 0)File "C:\app\python3.9\lib\site-packages\rpy2\rinterface_lib\_rinterface_capi.py", line 285, in _string_getitemres = conversion._cchar_to_str(File "C:\app\python3.9\lib\site-packages\rpy2\rinterface_lib\conversion.py", line 136, in _cchar_to_strs = ffi.string(c).decode(encoding)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb2 in position 33: invalid start byte

调试时发现，在"C:\app\python3.9\lib\site-packages\rpy2\rinterface_lib\conversion.py"文件中

这两句decode解码，默认encoding方式是"utf-8"，但是当R语言返回的信息中，如这里它返回的是"不存在叫'org.Hs.eg.db'这个名字的程辑包"，信息中有中文就导致编码不正常，如下修改即可解决：

def _cchar_to_str(c, encoding: str) -> str:# TODO: use isString and installTrChartry:s = ffi.string(c).decode(encoding)except Exception as e:s = ffi.string(c).decode('GBK')return sdef _cchar_to_str_with_maxlen(c, maxlen: int, encoding: str) -> str:# TODO: use isString and installTrChartry:s = ffi.string(c, maxlen).decode(encoding)except Exception as e:s = ffi.string(c, maxlen).decode("GBK")return s

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Python调用R出现“UnicodeDecodeError: ‘utf-8‘ codec can‘t decode byte 0xb2” 问题

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