Python EXEC show error: name is not defined

Question

我将 exec 与 selenium 一起使用到 运行，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'))

但是我遇到了错误，我该怎么办？

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，但恕我直言，在这种情况下您应该避免使用 exec()。试试下面的方法：

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

如果您想按 id、xpath、css 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')