rpy2：最新版本在 Ubuntu 上不起作用

Question

当我这样做时，from rpy2.robjects import r我收到一个错误：

>>> from rpy2.robjects import r
Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/usr/local/lib/python3.6/dist-packages/rpy2/robjects/__init__.py", line 27, in <module> from . import language
      File "/usr/local/lib/python3.6/dist-packages/rpy2/robjects/language.py", line 16, in <module> _str2lang = ri.baseenv['str2lang']
      File "/usr/local/lib/python3.6/dist-packages/rpy2/rinterface_lib/conversion.py", line 44, in _ cdata = function(*args, **kwargs)
      File "/usr/local/lib/python3.6/dist-packages/rpy2/rinterface_lib/_rinterface_capi.py", line 282, in _robj = function(*args, **kwargs)
      File "/usr/local/lib/python3.6/dist-packages/rpy2/rinterface_lib/sexp.py", line 355, in __getitem__
    raise KeyError("'%s' not found" % key)
KeyError: "'str2lang' not found"

但是当我降级到 3.2.0 版时一切正常。

有什么想法吗？

（Ubuntu 18.04、Python 3.6.8、rpy 3.3.2）