什么是最简单的方法来找到如果一个特定的值存在于一个网站上使用硒的多行表在python?

Question

我试图使我的脚本执行基于一个网站上的表行值的存在特定的动作。例如，如果x在表'lab'的第一行，创建调查，否则移动到下一行，检查x是否在该行。对不起，我正在尝试这个网站是无法访问的那些谁没有帐户，但请看到我的代码的简单版本，以帮助弄清楚这一点。到目前为止，我被困在第二个for循环上，下面的代码遍历每一行并打印出来，但只是挂起。也许这只是我需要的休息，但我已经试过了(休息，继续，通过)。

#for each patient id in list, find the section in the patients web-table by looking through each row where the covid name and result is stored

#search for results table within a table in a web page for eicrs
elems = driver.find_elements_by_xpath('//*[@id="xmlBlock"]/ul[1]/li/table[1]/tbody')
for idx, elem in enumerate(elems, 1):
for rownum, lab in enumerate(elem.text.split('n'), 1):

#get lab test from first column for each row        
lab_test = text_xpath(f'//*[@id="xmlBlock"]/ul[1]/li[{idx}]/table[1]/tbody/tr[{rownum}]/td[1]')

#get result from second column for each row
lab_result= text_xpath(f'//*[@id="xmlBlock"]/ul[1]/li[{idx}]/table[1]/tbody/tr[{rownum}]/td[2]') 

#if lab test is in list of rna tests and positive lab regex, create CONFIRMED investigation
if re.search(covid_test_names, lab_test.lower()) and re.search(pos_regex, lab_result.lower()): 

print('Log update: created confirmed investigation')              

#else if lab test is in list of antigen tests and positive lab regex, create PROBABLE investigation
elif re.search(ant_regex, lab_test.lower()) and re.search(antigen_pos_regex, lab_result.lower()):
print('Log update: created probable investigation')          
else:
print('Log doc: No lab test matches regex', lab_test, lab_result)

continue #continue loop through rows
continue #not sure if needed
break #break out of topmost for loop and move to next line of code once value has been found to match condition.
print('done with that')

Answer 1

如果我正确理解你需要什么，你应该从你的代码中删除continue和底部的break，并在if和else块内添加break，所以如果你发现了你正在寻找的条件并执行了你需要的操作-现在打破for循环。
像这样:

elems = driver.find_elements_by_xpath('//*[@id="xmlBlock"]/ul[1]/li/table[1]/tbody')
for idx, elem in enumerate(elems, 1):
for rownum, lab in enumerate(elem.text.split('n'), 1):

#get lab test from first column for each row        
lab_test = text_xpath(f'//*[@id="xmlBlock"]/ul[1]/li[{idx}]/table[1]/tbody/tr[{rownum}]/td[1]')

#get result from second column for each row
lab_result= text_xpath(f'//*[@id="xmlBlock"]/ul[1]/li[{idx}]/table[1]/tbody/tr[{rownum}]/td[2]') 

#if lab test is in list of rna tests and positive lab regex, create CONFIRMED investigation
if re.search(covid_test_names, lab_test.lower()) and re.search(pos_regex, lab_result.lower()): 

print('Log update: created confirmed investigation')              
break

#else if lab test is in list of antigen tests and positive lab regex, create PROBABLE investigation
elif re.search(ant_regex, lab_test.lower()) and re.search(antigen_pos_regex, lab_result.lower()):
print('Log update: created probable investigation')          
break
else:
print('Log doc: No lab test matches regex', lab_test, lab_result)

has been found to match condition.
print('done with that')

但也许我没有理解你的逻辑和问题