如何解决我的真实尝试在什么地方做错了
im试图让我的机器人进入某个网站,并且该网站是否关闭或运行不正常,以使我的机器人重新加载页面,并进行循环,直到通过xpath找到可点击的元素,然后继续。我不确定我是否应该使用“ break”或“ continue”以及它们的位置。如果您可以用实际的代码而不是用实际的方法来回答,那将是惊人的。谢谢
from selenium import webdriver
import time
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
start_time = time.time()
path = "C:\Program Files (x86)\Common Files\Chromedriver.exe"
driver = webdriver.Chrome(path)
# open page
driver.get("https://www.usmint.gov/")
while True:
progress = do_something(
try:
element = WebDriverWait(driver,4).until(
EC.element_to_be_clickable((By.XPATH,'//*[@id="navigation"]/div[3]/ul/li[2]/a')) #PRODUCT S
)
except:# open page
driver.get("https://www.usmint.gov/")
else:
# product schedule
driver.find_element_by_xpath('//*[@id="navigation"]/div[3]/ul/li[2]/a').click())
if progress is done
break:
try:
element = WebDriverWait(driver,100).until(
EC.element_to_be_clickable((By.XPATH,'//*[@id="navigation"]/div[3]/ul/li[2]/div/div/ul/li[3]/a')) #2020
)
except:
else:
# 2020 product schedule
driver.find_element_by_xpath('//*[@id="navigation"]/div[3]/ul/li[2]/div/div/ul/li[3]/a').click()
try:
element = WebDriverWait(driver,'//*[@id="cb0c26f755f49a3664c06800be"]/div/div/div[2]/div/div/a')) #birth set
)
except:
else:
# birth set 2020
driver.find_element_by_xpath('//*[@id="cb0c26f755f49a3664c06800be"]/div/div/div[2]/div/div/a').click()
'''
try:
element = WebDriverWait(driver,'//*[@id="emailmodalclose"]')) #clear
)
except:
else:
# clear email list stupidity
driver.find_element_by_xpath('//*[@id="emailmodalclose"]').click()
'''
try:
element = WebDriverWait(driver,'/html/body/div[1]/div[3]/div[2]/div[2]/form/div/div[5]/button[1]')) #add to
)
except:
else:
# add to bag
driver.find_element_by_xpath("/html/body/div[1]/div[3]/div[2]/div[2]/form/div/div[5]/button[1]").click()# double qoutes?
try:
element = WebDriverWait(driver,'//*[@id="mini-cart"]/div[3]/div[2]/div[3]/a')) #checkout
)
except:
else:
# checkout
driver.find_element_by_xpath('//*[@id="mini-cart"]/div[3]/div[2]/div[3]/a').click()
try:
element = WebDriverWait(driver,'//*[@id="dwfrm_login_username"]')) #login
)
except:
else:
# login
driver.find_element_by_xpath('//*[@id="dwfrm_login_username"]').send_keys("username")
try:
element = WebDriverWait(driver,'//*[@id="dwfrm_login_password"]')) #Password
)
except:
else:
# password
driver.find_element_by_xpath('//*[@id="dwfrm_login_password"]').send_keys("password")
try:
element = WebDriverWait(driver,'//*[@id="checkoutMethodLoginSubmit"]/span')) #checkout as
)
except:
else:
time.sleep(3)
# checkout as registered user
driver.find_element_by_xpath('//*[@id="checkoutMethodLoginSubmit"]/span').click()
try:
element = WebDriverWait(driver,'//*[@id="dwfrm_billing_paymentMethods_creditCardList"]/option[2]')) #credit card scroll
)
except:
else:
# credit card scroll
driver.find_element_by_xpath('//*[@id="dwfrm_billing_paymentMethods_creditCardList"]/option[2]').click() # .format?
try:
element = WebDriverWait(driver,'//*[@id="dwfrm_billing_paymentMethods_creditCard_month"]/option[2]')) #cc exp m
)
except:
else:
time.sleep(3)
# cc exp month
driver.find_element_by_xpath('//*[@id="dwfrm_billing_paymentMethods_creditCard_month"]/option[2]').click()
try:
element = WebDriverWait(driver,'//*[@id="dwfrm_billing_paymentMethods_creditCard_year"]/option[11]')) #cc exp y
)
except:
else:
# cc exp year
driver.find_element_by_xpath('//*[@id="dwfrm_billing_paymentMethods_creditCard_year"]/option[11]').click()
try:
element = WebDriverWait(driver,'//*[@id="dwfrm_billing_paymentMethods_creditCard_cvn"]')) #cvv
)
except:
else:
# cvv
driver.find_element_by_xpath('//*[@id="dwfrm_billing_paymentMethods_creditCard_cvn"]').send_keys("999")
try:
element = WebDriverWait(driver,'//*[@id="checkoutContinuePaymentDelegator"]')) #continue to final
)
except:
else:
# continue to final review
driver.find_element_by_xpath('//*[@id="checkoutContinuePaymentDelegator"]').click()
try:
element = WebDriverWait(driver,'//*[@id="formAgreementLabel"]/span')) #terms of use
)
except:
else:
# terms of use button
driver.find_element_by_xpath('//*[@id="formAgreementLabel"]/span').click()
try:
element = WebDriverWait(driver,'//*[@id="submitOrderButton"]')) #Place order
)
except:
else:
# place order
driver.find_element_by_xpath('//*[@id="submitOrderButton"]').click()
print ("time elapsed: {:.2f}s".format(time.time() - start_time))
driver.quit()
print("coin purchased")
#if __name__ == '__main__':
# order(keys)
解决方法
您的代码中有几个问题,而且看起来都很相似。
这是代码部分:
while True:
progress = do_something(
try:
element = WebDriverWait(driver,4).until(
EC.element_to_be_clickable((By.XPATH,'//*[@id="navigation"]/div[3]/ul/li[2]/a')) #PRODUCT S
)
except:# open page
driver.get("https://www.usmint.gov/")
问题1
您的代码无法运行。在您的图像上清晰可见,您应该在哪里开始修复此代码,Pycharm用红色突出显示该错误,您打开了一个没有关闭的括号。似乎您想将try
/ except
块设置为参数,但是progress = do_something(
并不是完整的语句,)
应该在try
块之前。您可能想实现以下目标:
def action1():
try:
element = WebDriverWait(driver,4).until(
EC.element_to_be_clickable((By.XPATH,'//*[@id="navigation"]/div[3]/ul/li[2]/a')) #PRODUCT S
)
except:# open page
driver.get("https://www.usmint.gov/")
然后您可以progress = do_something(action1)
之类的东西。
问题2
如果我正确解释了您可能想做的事情,则您的缩进在第16行中是不正确的。您不能在任何地方都添加新行,“有规则”。如果要在try
循环内嵌套except
/ while
块,请遵循缩进规则:
while condition:
try:
something()
except Exception:
continue
问题3
如果您有一个while True:
块,则需要一个break
并带有一个条件,否则循环将永远不会结束。目前尚不清楚为什么在那里存在while
循环。有一个带有try
的{{1}}块,其中代码等待一个元素,为什么要让它多次执行相同的代码?代码不应该第一次工作吗?
问题4
裸露的做法是不好的做法,不一定能得到您期望的结果,而且缩进也不正确。您将没有任何信息了解WebDriverWait
部分失败的原因,仅页面会被打开。更糟糕的是,如果将所有这些放到try
循环中,您都会看到页面将一次又一次地重新加载。
您可能不想捕获所有异常,并且可能想在xpath损坏,元素不存在,陈旧元素异常以及浏览器未打开的情况下执行其他操作。正确的做法是:
while
如果您在程序中解决了这类问题,它可能会开始执行您期望的操作。摆脱您的try:
something(this,that)
except AttributeError as ex:
print(f'Oh no,an attribute error,values were: {this,that}')
magical_attr_error_fix()
except ValueError as ex:
print(f'Yikes,a value error,that}')
raise ex
循环。
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