错误:找不到conda二进制文件。安娜康达安装好了吗？

Question

我试图在R中运行python脚本，我有一个macOS Catalina10.15.4，并且继续收到这个错误：

"Error in value[[3L]](cond) : 
  Need to install Anaconda from https://www.anaconda.com/download/.
Error: Unable to find conda binary. Is Anaconda installed?"

我已经下载了python3.8和anaconda。在用尽谷歌搜索之后。我知道我的康达之路可能是问题所在。然后谷歌搜索推荐使用"use_condaenv()“来指定正确的路径，但我仍然会收到相同的错误: error:无法找到conda二进制文件。Anaconda安装了吗？“

简而言之：，如何找到二进制conda的正确位置？我如何准确地纠正这条路？如何解决错误？

下面是我到目前为止运行的语法：

install.packages("reticulate")

library(reticulate)

repl_python()

Python 2.7.16 (/usr/bin/python)

Reticulate 1.13 REPL -- A Python interpreter in R.

reticulate::py_config()

python:         /usr/bin/python
libpython:      /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config/libpython2.7.dylib
pythonhome:     /System/Library/Frameworks/Python.framework/Versions/2.7:/System/Library/Frameworks/Python.framework/Versions/2.7
version:        2.7.16 (default, Feb 29 2020, 01:55:37)  [GCC 4.2.1 Compatible Apple LLVM 11.0.3 (clang-1103.0.29.20) (-macos10.15-objc-
numpy:          /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy
numpy_version:  1.8.0

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

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

**ERROR: The requested version of Python ('/usr/bin/python3') cannot be used, as another version of
Python ('/usr/bin/python') has already been initialized. Please restart the R session if you need
to attach reticulate to a different version of Python.
Error in use_python("/usr/bin/python3", required = TRUE) : 
  failed to initialize requested version of Python**

Sys.which("python")

           python 
"/usr/bin/python" 

install.packages("youtubecaption")

library(youtubecaption)

**The downloaded binary packages are in
    /var/folders/n2/kl03cmjj04n5msjq8x8mt_yr0000gn/T//RtmpD82WW0/downloaded_packages**

url<-"https://www.youtube.com/watch?v=qATvD6kQ47s&t=339s" #this is just an example url#

caption<-get_caption(url)

**Error in value[[3L]](cond) : 
  Need to install Anaconda from https://www.anaconda.com/download/.
Error: Unable to find conda binary. Is Anaconda installed?**

Answer 1

这里有三件不同的事情你可以尝试。

RETICULATE_PYTHON环境变量

Reticulate还搜索环境变量RETICULATE_PYTHON，您可以在其中定义要使用的python。定义这里。

Sys.setenv(RETICULATE_PYTHON = "path/to/anaconda/bin/python")
library(reticulate)
# and so on

reticulate.conda_binary选项

reticulate有一个选项来指定conda可执行文件(定义这里)。你能试试这个吗？

options(reticulate.conda_binary = "path/to/bin/conda")
library(reticulate)

PATH环境变量

还可以尝试在R中设置PATH变量以包括anaconda/bin目录：

# Prepend the anaconda/bin directory so that python installation 
# is found before any others.
original_path <- Sys.getenv("PATH")
Sys.setenv(PATH = paste("path/to/anaconda/bin", original_path, sep = ":"))

library(reticulate)
reticulate::py_config()
# and so on