找不到满足要求的版本 geckodriver==0.24.0（来自 -r /app/requirements.txt（第 4 行））错误与 Selenium Geckodriver

Question

我的本​​地机器上没有问题。 但是当我将它部署在云服务器中时，特别是在 Scrapinghub 我需要添加 geckodriver

如何在我的 requirements.txt 中包含 geckodriver？

这是我的工作代码

 from selenium import webdriver
 from selenium.webdriver.support.ui import WebDriverWait
 from selenium.webdriver.common.by import By
 from selenium.webdriver.support import expected_conditions as EC
 from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
 from selenium.webdriver.firefox.firefox_binary import FirefoxBinary

 def parse_subpage(self, response):

        profile = webdriver.FirefoxProfile()
        profile.set_preference("network.proxy.type", 1)
        profile.set_preference("network.proxy.http", 
                    "localhost")
        profile.set_preference("network.proxy.http_port", 
                    3128)
        profile.update_preferences()

        capabilities = webdriver.DesiredCapabilities().FIREFOX
        capabilities["marionette"] = True
        driver = webdriver.Firefox(capabilities=capabilities, 
                    firefox_profile=profile)

        driver.get('sample.com')
        driver.quit() 

我的 Requirement.txt

mysql-connector-python
pytz==2018.9
selenium==3.13.0
geckodriver==0.24.0 

观察到错误：

ERROR: Could not find a version that satisfies the requirement geckodriver==0.24.0 (from -r /app/requirements.txt (line 4)) (from versions: none)

Answer 1

此错误消息...

Could not find a version that satisfies the requirement geckodriver==0.24.0 (from -r /app/requirements.txt (line 4)) (from versions: none)

...暗示 GeckoDriver 尝试通过 Firefox 启动浏览会话时出现错误。

根据@987654321 中的文档，geckodriver==0.24.0 和 selenium==3.13.0 之间似乎没有不兼容性 @。

大概是 Mozilla Firefox 的安装位置有问题。 Firefox 未安装在您的系统中，或者 Firefox 未安装在 默认（所需的）位置。

---

解决方案

您需要在默认位置安装 Firefox。如果 Firefox 安装在 自定义 位置，您需要传递 firefox 二进制文件的绝对路径，如下所示：

from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary

capabilities = webdriver.DesiredCapabilities().FIREFOX
capabilities["marionette"] = True
binary = FirefoxBinary('C:/Program Files/Mozilla Firefox/firefox.exe')
driver = webdriver.Firefox(firefox_binary=binary, capabilities=capabilities, executable_path="C:/Utility/BrowserDrivers/geckodriver.exe")
driver.get("http://www.google.com")