将包中的R符号转换为Python符号时，rpy2发生冲突

我只是尝试了以下方法：

import rpy2
import rpy2.robjects as RObjects
from rpy2.robjects.packages import importr

princurve = importr('princurve', robject_translations = {"plot_principal_curve": "plot.principal.curve"})
princurve = importr('princurve', robject_translations = {"points_principal_curve": "points.principal.curve"})

我犯了这个错误

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site-packages\rpy2\robjects\packages.py", line 498, in importr
    symbol_resolve=symbol_resolve)
  File "C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site-packages\rpy2\robjects\packages.py", line 202, in __init__
    self.__fill_rpy2r__(on_conflict=on_conflict)
  File "C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site-packages\rpy2\robjects\packages.py", line 328, in __fill_rpy2r__
    .__fill_rpy2r__(on_conflict=on_conflict))
  File "C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site-packages\rpy2\robjects\packages.py", line 238, in __fill_rpy2r__
    exception)
  File "C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site-packages\rpy2\robjects\packages_utils.py", line 120, in _fix_map_symbols
    raise exception(msg)
rpy2.robjects.packages.LibraryError: Conflict when converting R symbols in the package "princurve" to Python symbols:
-lines_principal_curve -> lines.principal.curve, lines.principal_curve
- plot_principal_curve -> plot.principal.curve, plot.principal_curve
- points_principal_curve -> points.principal.curve, points.principal_curve
To turn this exception into a simple warning use the parameter `on_conflict="warn"`

回溯（最近一次呼叫最后一次）：
文件“”，第1行，在
文件“C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site packages\rpy2\robjects\packages.py”，第498行，在importr中
symbol_resolve=symbol_resolve）
文件“C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site packages\rpy2\robjects\packages.py”，第202行，在u init中__
自我。自我填充（冲突中=冲突中）
文件“C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site packages\rpy2\robjects\packages.py”，第328行，在uuu fill\urpy2r中__
.\uuuuu填充\urPy2r\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
文件“C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site packages\rpy2\robjects\packages.py”，第238行，在uuu fill\urpy2r中__
例外情况）
文件“C:\Users\me\AppData\Local\Continuum\anaconda3\lib\site packages\rpy2\robjects\packages\u utils.py”，第120行，在_fix\u map\u符号中
引发异常（msg）
rpy2.robjects.packages.LibraryError:将包“princurve”中的R符号转换为Python符号时发生冲突：
-lines\u principal\u curve->lines.principal.curve，lines.principal\u curve
-plot\u principal\u curve->plot.principal.curve，plot.principal\u curve
-points\u principal\u curve->points.principal.curve，points.principal\u curve
要将此异常转换为简单警告，请使用参数`on\u conflict=“warn”`

---

有人能帮忙吗？

你就快到了！在

robject\u translations

中，您需要提供R name->Python名称映射，但您的字典似乎正好相反。您还需要将所有映射放在一个字典中。要想说得非常清楚，您可以这样解决冲突：

princurve_example_1 = importr(
    "princurve",
    robject_translations={
        "plot.principal.curve": "plot_dot_principal_dot_curve", 
        "lines.principal.curve": "lines_dot_principal_dot_curve", 
        "points.principal.curve": "points_dot_principal_dot_curve",
        # optional (if omitted, you will get them under plot_principal_curve, etc.):
        "plot.principal_curve": "plot_dot_principal_curve",
        "lines.principal_curve": "lines_dot_principal_curve",
        "points.principal_curve": "points_dot_principal_curve"
    }
)
# then, after creating the curve and storing it in curve variable:
princurve_example_1.plot_dot_principal_dot_curve(curve)
# or
princurve_example_1.plot_dot_principal_curve(curve)

但是，在咨询了之后，我发现

principal.curve

已被弃用，您应该改用

principal\u curve

（很高兴看到更多的R包最终转向在函数和变量名中使用下划线的约定，如果可能的话！）；因此，您只需执行以下操作：

princurve = importr(
    "princurve",
    robject_translations={
        "plot.principal.curve": "plot_principal_curve_deprecated", 
        "lines.principal.curve": "lines_principal_curve_deprecated", 
        "points.principal.curve": "points_principal_curve_deprecated",
    }
)
# auto-generated from "plot.principal_curve"
princurve.plot_principal_curve(curve)
# manually mapped from "plot.principal.curve"
princurve.plot_principal_curve_deprecated(curve)

---

尝试忽略

robject\u translations

arg，因为

importr

会将句点转换为名称中的下划线，可能与您的尝试有名称冲突。如果忽略robject\u translations arh，我会收到相同的错误消息