Python似乎不可避免的索引器错误和UnboundLocalError

我正在自动化从我的网站将数据导入CSV的过程。回溯可以在下面看到。我收到一个NameError，指出在if/elif条件中未定义mobile和office

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 39, in Search
    office = emailandphone[1]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 19, in <module>
    class Search():
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 43, in Search
    if mobile not in emailandphone:
NameError: name 'mobile' is not defined

Process finished with exit code 1

编辑：假设为空白Book1.csv

from selenium import webdriver
import time
import csv
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()
driver.get("undisclosable")

driver.find_element_by_xpath("//input[@name='rad_region' and @value='far']").click()
time.sleep(2)
driver.find_element_by_xpath("//input[@name='rad_georegion' and @value='east']").click()
time.sleep(2)
driver.find_element_by_xpath("//input[@name='rad_manage' and @value='No']").click()
time.sleep(2)
driver.find_element_by_xpath('//*[@id="ModalPopupDiv"]/div/div[3]/div[1]/a').click()

class Search():
    with open(r'Book1.csv', 'r+', encoding='utf-8') as csvfile:
        csvreader = csv.reader(csvfile)
        next(csvreader)
        while True:
                for row in csvreader:
                    WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.ID, "searchKeyword")))
                    WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.ID, "go")))
                    driver.find_element_by_id('searchKeyword').clear()
                    time.sleep(1)
                    driver.find_element_by_id('searchKeyword').send_keys(row)
                    time.sleep(1)
                    driver.find_element_by_id('go').click()
                    time.sleep(1)

                    writer = csv.writer(csvfile)
                    tobesplit = str(driver.find_element_by_class_name('snippetContact').text)
                    emailandphone = tobesplit.split("  |  ")
                    try:
                        email = emailandphone[0]
                        office = emailandphone[1]
                        mobile = emailandphone[2]
                        writer.writerow([None, email, office, mobile])
                    except UnboundLocalError:
                        if mobile not in emailandphone:
                            writer.writerow([None, email, office])
                        elif office not in emailandphone:
                            writer.writerow([None, email])

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 39, in Search
    office = emailandphone[1]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 19, in <module>
    class Search():
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 43, in Search
    if mobile not in emailandphone:
NameError: name 'mobile' is not defined

Process finished with exit code 1

以下是stacktrace：

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 39, in Search
    office = emailandphone[1]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 19, in <module>
    class Search():
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 43, in Search
    if mobile not in emailandphone:
NameError: name 'mobile' is not defined

Process finished with exit code 1

回溯（最近一次呼叫最后一次）：
文件“C:/Users/s995648.CS/PycharmProjects/untitled/auto”，第39行，搜索中
office=电子邮件和电话[1]
索引器：列表索引超出范围
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“C:/Users/s995648.CS/PycharmProjects/untitled/auto”，第19行，在
类搜索（）：
文件“C:/Users/s995648.CS/PycharmProjects/untitled/auto”，第43行，搜索中
如果手机不在Email和Phone中：
NameError:未定义名称“mobile”
进程已完成，退出代码为1

1>如果您正在解析的数据没有足够的元素用分隔符分隔，那么您将得到下面的错误，它将移动到except块，这意味着移动变量赋值从未发生，因此except块将引发错误。我希望这是清楚的。此外，为了清楚起见，示例中的错误出现得更早，他们建议在尝试结束时使用其他方法，但默认值除外（“无”可能适用于您的用例）

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 39, in Search
    office = emailandphone[1]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 19, in <module>
    class Search():
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 43, in Search
    if mobile not in emailandphone:
NameError: name 'mobile' is not defined

Process finished with exit code 1

---

2> 在尝试访问值之前，最好检查列表是否按照您的假设填充，最简单的方法是在赋值后检查每个元素的长度，并相应地进行处理

Hi！欢迎使用Stack Exchange。你能重新表述这个问题以澄清哪些会引起哪些错误吗？你的代码有点不清楚<代码>str未在其中定义，且语法不正确。您可能想咨询一下欢迎使用StackOverflow的必要条件。请阅读并遵循帮助文档中的发布指南。适用于这里。在您发布MCVE代码并准确描述问题之前，我们无法有效地帮助您。我们应该能够将您发布的代码粘贴到文本文件中，并重现您描述的问题。我深表歉意。我已经查看了MCVE并更新了我的一些代码，并将继续这样做。如果我的代码或我的文章没有描述我的问题，我非常抱歉。这正是我的代码作为示例的样子。请随时给我建议，因为我是新的过程。非常感谢。只是想澄清一下其他人所说的：如果（1）有您看到的确切错误，包括堆栈跟踪，以及（2）我可以复制/粘贴到系统上的一些代码，这些代码将运行并产生相同的错误，这将是有帮助的。也许（2）没有那么容易，因为我们没有你的“Book1.csv”文件。

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 39, in Search
    office = emailandphone[1]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 19, in <module>
    class Search():
  File "C:/Users/s995648.CS/PycharmProjects/untitled/auto", line 43, in Search
    if mobile not in emailandphone:
NameError: name 'mobile' is not defined

Process finished with exit code 1