Python EXEC显示错误：名称未定义

Question

我将exec与硒一起使用，如下所示

from selenium import webdriver
search_method = 'find_element_by_class_name'
search_word = 'keyword'
exec("elem_search_word = driver." + search_method + "('" + search_word + "')")
elem_search_word.send_keys('python'))

但是我遇到错误，该怎么办？

elem_search_word.send_keys(str(args.search))
NameError: name 'elem_search_word' is not defined

Answer 1

我无法重现您的问题，但是恕我直言，在这种情况下，您应避免使用exec()。请尝试以下操作：

search_method = 'class name'
search_word = 'keyword'
elem_search_word = driver.find_element(search_method, search_word)
elem_search_word.send_keys('python')

如果您要按id，xpath，css ...进行搜索，只需将search_method设置为适当的值

或者：

from selenium.webdriver.common.by import By

search_method = By.CLASS_NAME
search_word = 'keyword'
elem_search_word = driver.find_element(search_method, search_word)
elem_search_word.send_keys('python')