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我正在自动化将数据从我的网站导入 CSV 的过程。回溯可以在下面看到。我收到一个 NameError 说明移动和办公室未在 if/elif 条件中定义。

编辑：假设一个空白 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])

这是堆栈跟踪： 

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
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1 回答 1

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1> 如果您正在解析的数据没有足够的由分隔符分隔的元素，那么您将收到以下错误并将移动到 except 块，这意味着 Mobile 变量分配永远不会发生，因此 except 块引发错误。我希望这很清楚。为了清楚起见，还附上了一个示例，以便更早地引发错误，他们建议在尝试结束时使用 else ，默认值除外（“none”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

2> 在尝试访问值之前检查列表是否按照您的假设填充，最简单的方法是在分配后检查每个元素的长度，并进行相应处理

于 2017-11-22T18:12:24.793 回答