Python：列表索引在列表迭代的中途超出范围

Question

首先，列表索引超出范围听起来很简单而且不言自明。。。但是环顾四周，我找不到任何关于我的情况的解释；我正在遍历一个19个项目的列表，在第9个项目中，我的控制台抛出了“列表索引超出范围”错误。坦白说，我不知道该怎么解释。。。你知道吗

*我正在使用phantomjs和selenium来刮取网页。。。提前谢谢！你知道吗

# data list
# -------------------------------------------------------------------------------------   
        xpath = [
        businessName,firstName,lastName,ubi,info,
        licenseType,licenseNumber,licenseEffectiveDate,licenseExpirationDate,status,
        bondProvider,bondNumber,bondAmount,bondEffectiveDate,bondEffectiveDate,insuranceProvider,
        insuranceNumber,insuranceAmount,insuranceEffectiveDate,insuranceExpirationDate
        ] 

        data = [
        "businessName","firstName","lastName","ubi","info",
        "licenseType","licenseNumber","licenseEffectiveDate","licenseExpirationDate","status",
        "bondProvider","bondNumber","bondAmount","bondEffectiveDate","bondEffectiveDate","insuranceProvider",
        "insuranceNumber","insuranceAmount","insuranceEffectiveDate","insuranceExpirationDate"
        ] 
#
#
# xpath check and grab function
# -------------------------------------------------------------------------------------
        i = 0
        while i <= len(data):
           result = browser.find_element_by_xpath(xpath[i]).text    #checks is xpath exists
           print i
           print data[i] + " = " + str(result) 
           i += 1

Answer 1

如果如您的示例所示，xpath和data中的项始终直接对应，则可以使用循环表达式更轻松、更清晰地执行此操作：

for elem_xpath, name in zip(xpath, data):

如果您也需要索引i，请使用enumerate：

for i, (elem_xpath, name) in enumerate(zip(xpath, data)):