如何解决“chromedriver可执行文件需要在PATH中"在 PyDev 中使用 virtualenv 运行 Selenium Chrome 时出错? [英] How to resolve "chromedriver executable needs to be in PATH" error when running Selenium Chrome using virtualenv within PyDev?

问题描述

简短:

在 https://automatetheboringstuff.com/chapter11 阅读了使用 selenium 模块控制浏览器，我正在尝试在 PyDev 的虚拟环境中运行 Selenium Chrome 驱动程序.我已经设法从 PyDev 外部做到了，但从内部，我得到:

Having read Controlling the Browser with the selenium Module at https://automatetheboringstuff.com/chapter11, I am trying to run the Selenium Chrome driver in a virtual environment from PyDev. I have managed to do it from outside PyDev, but from within, I get:

selenium.common.exceptions.WebDriverException: 消息:'chromedriver' 可执行文件需要在 PATH 中.

长:

我使用的是 Linux Debian 3.10.11-1.

I'm using Linux Debian 3.10.11-1.

遵循 https://www.dabapps.com/blog/introduction-to-pip-and-virtualenv-python/，甚至在开始使用 PyDev 之前，我 ...

Following https://www.dabapps.com/blog/introduction-to-pip-and-virtualenv-python/, before even starting with PyDev, I . . .

1. 使用 virtualenv 设置虚拟环境

1. Set up a virtual environment with virtualenv

1. 安装 virtualenv

1. Installed virtualenv

pip install virtualenv

为我的项目创建一个目录

Made a directory for my project

cd ~/temp/

mkdir my_project

cd my_mproject

创建了一个名为env

virtualenv env

激活它.

Activated it.

source env/bin/activate

进入 Python 的交互模式，告诉自己我使用的是哪个版本的 Python

Went into Python's interactive mode to tell myself which version of Python I was using

python

Python 2.7.12rc1 (default, Jun 13 2016, 09:20:59) 
[GCC 5.4.0 20160609] on linux2

退出交互模式并安装 Selenium 的东西

Exited out of the interacive mode and installed the Selenium stuff

1. 首先是模块

1. First the module

pip install selenium

遵循 https://groups.google 上的建议.com/forum/#!topic/obey-the-testing-goat-book/Ty4FQoV3S0Q，安装了chromedriver

Following suggestion at https://groups.google.com/forum/#!topic/obey-the-testing-goat-book/Ty4FQoV3S0Q, installed chromedriver

cd env/bin/

wget http://chromedriver.storage.googleapis.com/2.22/chromedriver_linux64.zip

unzip chromedriver_linux64.zip

写了一个小脚本，看看它是否有效

Wrote a little script to see if it would work

from selenium import webdriver
driver = webdriver.Chrome()

运行它.Chrome 网络浏览器窗口打开.太好了.

Ran it. A Chrome web-browser window opened. Great.

现在在 PyDev 中尝试:

Now to try it in PyDev:

大致遵循 https://www.caktusgroup.com/博客/2011/08/31/getting-started-using-python-eclipse/...

1. 已安装 Eclipse(Neon)

1. Installed Eclipse (Neon)

已安装 PyDev

从 Eclipse 中创建一个新项目(文件 菜单 > 新建项目 > 常规 > 项目strong>，输入项目名称并点击完成).

From within Eclipse, created a new project (File menu > New Project > General > Project, entered a Project Name and clicked Finish).

回到命令提示符(因为我还没有找到如何在 Eclipse 和 PyDev 中执行此操作):cd 进入我的新项目的根目录并创建一个虚拟环境.

Back at the command prompt (because I haven't yet found out how to do this from within Eclipse and PyDev): cd'ed into my new project's root directory and created a virtual environment.

和以前一样，仍然在命令提示符下，我激活了新项目的虚拟环境并安装了 Selenium 模块，然后安装了 chromedriver_linux64 中出现的 chromedriver 可执行文件.zip 文件.

As before, still at the command prompt, I activated the new project's virtual environment and installed the Selenium module and then the chromedriver executable file that came up of the chromedriver_linux64.zip file.

回到 Eclipse，我注册了我的项目以使用虚拟环境，我猜在 PyDev 术语中它不是虚拟环境，而是解释器:

Back in Eclipse, I signed up my project to use the virtual environment, which I guess in PyDev lingo is called not a virtual environment, but rather an interpreter:

1. Window 菜单 > 首选项 > PyDev > 解释器 > Python 解释器 > 添加.

1. Window menu > Preferences > PyDev > Interpreters > Python Interpreters > Add.

给解释器一个名字.

对于Interpreter Executable，我选择了项目虚拟环境bin目录下的python2.7文件

For Interpreter Executable, I selected the python2.7 file in my project's virtual environment's bin directory

右键单击我的项目，选择属性 > PyDev - Interpreter/Grammar > 在Interpreter 下选择我的新解释器 >好的.

Right-clicked on my project, select Properties > PyDev - Interpreter/Grammar > Under Interpreter selected my new interpreter > OK.

给我的项目相同的脚本...

Gave my project the same script . . .

from selenium import webdriver
driver = webdriver.Chrome()

并通过点击运行菜单> 运行方式 > Python运行来运行它.

and ran it by clicking on the Run menu > Run As > Python Run.

现在，我只在 Eclipse 的控制台中收到一条消息，而不是打开 Chrome 网络浏览器窗口:

Now, though, instead of a Chrome web-browser window opening, I get only a message in Eclipse's console:

selenium.common.exceptions.WebDriverException: 消息:'chromedriver' 可执行文件需要在 PATH 中.

当我从命令提示符运行相同的脚本时，为了让 Web 浏览器窗口打开，我尝试过:

To get the web browser window to open as it does when I run the same scrip from a command prompt, I have tried:

• 将虚拟环境的 bin 文件夹(因为这是 chromedriver 文件所在的位置)添加到解释器.

• adding the the virtual environment's bin folder (because that's where the chromedriver file is) to the interpreter.

删除解释器并创建新的解释器.

deleting the interpreter and creating it new.

将 chromedriver 复制到我的脚本所在的同一目录中.没有区别.

copying the chromedriver into the same directory where my script is. No difference.

将我下载的 chromedriver_linux64.zip 文件添加到解释器中.还是一样的错误.

adding the chromedriver_linux64.zip file that I downloaded to the interpreter. Still the same error.

我一直在 PyDev 中编写我的脚本，然后转向命令提示符来运行它.只是希望我能在 PyDev 的调试模式下运行它.

I been continuing by writing my script in PyDev, then turning to the command prompt to run it. Just wish I could run it in PyDev's debug mode.

如何在 PyDev 的PATH"中获取这个chromedriver"，以便我可以从 Eclipse 运行脚本?

How can I get this 'chromedriver' in the "PATH" in PyDev so I can run the script from Eclipse?

推荐答案

如果将 chromedriver 放入 PATH 的所有尝试都失败了，您也可以像这样将可执行路径传递给 webdriver.Chrome():

If all attempts to put chromedriver in your PATH fail, you can also hand the executable path to webdriver.Chrome() like so:

chromedriver_loc = '/path/to/chromedriver'
driver = webdriver.Chrome(executable_path=chromedriver_loc)

这是我尝试从 virtualenv 运行 chromedriver 时的最终解决方案.

This was my eventual solution when trying to run chromedriver from a virtualenv.

这篇关于如何解决“chromedriver可执行文件需要在PATH中"在 PyDev 中使用 virtualenv 运行 Selenium Chrome 时出错?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！