没有名为“rpytools”的模块？

Question

我正在尝试使用 R 中的网状库。我使用“functions.py”示例来测试它：

# functions.py file
def add(x, y): 
    return x + y

在 R studio（版本 3.5.2）中，这就是我所拥有的：

library(reticulate)  
source_python('functions.py')

但是，这会返回一个错误：

Error in py_set_attr_impl(x, name, value) : 
  Evaluation error: ModuleNotFoundError: No module named 'rpytools'.

所以我被困在这里了。如果有帮助，我还会分享我的 Python 是 64 位且版本 3.6.5。有人知道该怎么做吗？

谢谢

Answer 1

rpytools是由您提供的模块reticulate，应该放置在您的模块路径上。例如，我看到：

> library(reticulate)
> sys <- import("sys", convert = TRUE)
> sys$path
 [1] ""                                                                                                          
 [2] "/usr/local/Cellar/python@2/2.7.15_3/Frameworks/Python.framework/Versions/2.7/bin"                          
 [3] "/Users/kevin/Library/Python/2.7/lib/python/site-packages/pip-18.1-py2.7.egg"                               
 [4] "/Users/kevin/Library/Python/2.7/lib/python/site-packages/virtualenv-16.0.0-py2.7.egg"                      
 [5] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python27.zip"                         
 [6] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7"                            
 [7] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin"                
 [8] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac"                   
 [9] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages"
[10] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk"                     
[11] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old"                    
[12] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload"                
[13] "/Users/kevin/Library/Python/2.7/lib/python/site-packages"                                                  
[14] "/usr/local/opt/python@2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages"              
[15] "/Users/kevin/Library/R/3.5/library/reticulate/python"     

rpytools请注意最后一个条目，它提供了导入时可以找到的路径。你看到类似的东西了吗？