python - 类型错误 : unsupported operand type(s) for %: 'tuple' and 'str'

Question

我有locators.py

class MainPageLocatars(object):
  # Login function locators
  TEST           = "//*[starts-with(@id,'table_')]/tbody/tr[%s]"

我将此定位器称为如下:

INDEX_MAP = {
    'First': '1',
    'Last': 'last()'
}

# all locaters for this class are defined here only
class ListView(Page):

    def __init__(self, driver, index):

        if index not in INDEX_MAP:
            raise ValueError("Invalid index %s" % index)

        self.driver = driver
        self.row = self.driver.find_element_by_xpath(MainPageLocatars.FRAMEONE % (INDEX_MAP[index])

这是正确的方法吗？

这是我收到的错误:

   self.row = self.driver.find_element_by_xpath(MainPageLocatars.FRAMEONE % (INDEX_MAP[index]))
   self.row = self.driver.find_element_by_xpath(MainPageLocatars.FRAMEONE % (INDEX_MAP[index]))
TypeError: unsupported operand type(s) for %: 'tuple' and 'str'

Answer 1

替换:

MainPageLocatars.FRAMEONE % (INDEX_MAP[index])

作者:

MainPageLocatars.TEST % (INDEX_MAP[index])

进行字符串格式化。