用字典优化过长的if 语句

如果代码中，if 语句，后面elif 过多，完全可以用字典来优化代码。

def response(method):
    if method == "POST":
        return "/post"
    elif method == "GET":
        return "/get"
    elif method == "HEAD":
        return "/head"
    return "/"def resposne_by_dict(method_dict, method):
    '''用字典代替if 语句   '''
    return method_dict.get(method, "/")if __name__ == '__main__':
    method_dict = {
        "POST": "/post",
        "GET": "/get",
        "HEAD": "/head",
    }    method = "POST"
    print(response(method))
    print(resposne_by_dict(method_dict, method))

在类中的第二种运用

method_dict = {
            'id':            self.driver.find_element_by_id,
            'name':          self.driver.find_element_by_name,
            'className':     self.driver.find_element_by_class_name,
            'xpath':         self.driver.find_element_by_xpath,
            'link_text':     self.driver.find_element_by_link_text,
            'css_selector':  self.driver.find_element_by_css_selector,
            'names':         self.driver.find_elements_by_name,
            'classNames':    self.driver.find_elements_by_class_name,
            'xpaths':        self.driver.find_elements_by_xpath,
            'css_selectors': self.driver.find_elements_by_css_selector,
        }