Python 3.x 从HTML数据透视表提取数据

我有几个问题要解决：
1.列1-3可能是合并的单元格，因此缺少“td”值。如果这些列不存在td，我如何填充每一行？或者，列4-7始终可见。我考虑处理这个问题的一种方法是向后循环以获得第7、6、5、4列，如果第3、2、1列不存在，则使用前一行中的前一个值
2.在第4列中，可能有多个值和一个或多个超链接。我需要提取文本和所有超链接，点击它们并下载附件

如果有比硒更好的方法，请告诉我。最终输出是将此数据表和附件填充到excel文件中

Python-Selenium代码：该代码用于按HTML代码（'td'）中的每一列提取每一行数据

我附上了使用BeautifulSoup提取的HTML代码，让您了解表格的外观。第一个表行有7个“td”，但后续行没有

嗯。因此，我对col代码进行了以下改进。反转循环非常有效！现在，我所有的超链接都将位于第4列。现在，我必须计算出要为每一行填充的第1-3列，打开所有超链接并将它们保存到共享驱动器上的特定文件夹中。谢谢

    columncounter = 7
    cols = rows.find_elements_by_tag_name("td")
    for col in reversed(cols):
        print('ColumnNumber = %d' %columncounter)
        print(col.text)
        if columncounter == 4:
            colfour = col.get_attribute('innerHTML')
            colfour2 = col.find_elements_by_tag_name('a')
            for a in colfour2:
                print(a.get_attribute('href'))
    columncounter-=1

---

这可能不是最好的解决方案，但以下是我为实现这一点所做的：

from selenium import webdriver
from win32com.client as win32

xl = win32.gencache.EnsureDispatch('Excel.Application')
xl.Visible = 1
wb = xl.Workbooks.Open('Template.xlsx')
xl.DisplayAlerts = False
ws = wb.Worksheets('Sheet1')
tr = 10   # paste results into row 10 for excel table
for rows in row[1:] #skip header row
    rtxt = rows.text.strip()  #trim text to determine if row is empty
    if rtxt:   # used to determine if rtxt variable for empty row
        columncounter = 7
        cols = rows.find_elements_by_tag_name("td")
        for col in reversed(cols):
            if columncounter == 7:
                col7 = col.text
            elif columncounter == 6: 
                col6 = col.text
            elif columncounter == 5:
                col5 = col.text
            elif columncounter ==4: 
                col4 = col.text
                colfour = col.get_attribute('innerHTML') #get entire cell code
                colfour2 = col.find_elements_by_tag_name('a') 
                for a in colfour2:
                    link = a.get_attribute('href') #extract hyperlink
                    linkh = 'https'
                    if linkh in link:  #only want hyperlinks that start with https
                        for i in link:
                            col8+=i     #extracts multiple link into same variable
            elif columncounter == 3:
                col3 = col.text
            elif columncounter == 2:
                col2 = col.text
            elif columncounter == 1:
                col1 = col.text
            columncounter-=1
        #paste all of the values in column into excel
        dest_cell = ws.Range('A' + str(tr))    
        dest_cell.Value = col1
        dest_cell = ws.Range('B' + str(tr))    
        dest_cell.Value = col2
        dest_cell = ws.Range('C' + str(tr))    
        dest_cell.Value = col3
        dest_cell = ws.Range('D' + str(tr))    
        dest_cell.Value = col4
        dest_cell = ws.Range('E' + str(tr))    
        dest_cell.Value = col5
        dest_cell = ws.Range('F' + str(tr))    
        dest_cell.Value = col6
        dest_cell = ws.Range('G' + str(tr))    
        dest_cell.Value = col7
        dest_cell = ws.Range('H' + str(tr))    
        dest_cell.Value = col8  
        tr+=1   
    else:
        continue   #skip empty rows   

这将附加第1-3列的值，因为由于前3列中合并了单元格，所以每行的所有7列都没有“td”值。然后将每个值作为重复值粘贴到excel文件中，直到它成为根据columncounter从该列的col.text检索到的新值。

请阅读原因。考虑使用格式化的基于文本的相关HTML、代码试验和错误堆栈跟踪更新问题。

from selenium import webdriver
from win32com.client as win32

xl = win32.gencache.EnsureDispatch('Excel.Application')
xl.Visible = 1
wb = xl.Workbooks.Open('Template.xlsx')
xl.DisplayAlerts = False
ws = wb.Worksheets('Sheet1')
tr = 10   # paste results into row 10 for excel table
for rows in row[1:] #skip header row
    rtxt = rows.text.strip()  #trim text to determine if row is empty
    if rtxt:   # used to determine if rtxt variable for empty row
        columncounter = 7
        cols = rows.find_elements_by_tag_name("td")
        for col in reversed(cols):
            if columncounter == 7:
                col7 = col.text
            elif columncounter == 6: 
                col6 = col.text
            elif columncounter == 5:
                col5 = col.text
            elif columncounter ==4: 
                col4 = col.text
                colfour = col.get_attribute('innerHTML') #get entire cell code
                colfour2 = col.find_elements_by_tag_name('a') 
                for a in colfour2:
                    link = a.get_attribute('href') #extract hyperlink
                    linkh = 'https'
                    if linkh in link:  #only want hyperlinks that start with https
                        for i in link:
                            col8+=i     #extracts multiple link into same variable
            elif columncounter == 3:
                col3 = col.text
            elif columncounter == 2:
                col2 = col.text
            elif columncounter == 1:
                col1 = col.text
            columncounter-=1
        #paste all of the values in column into excel
        dest_cell = ws.Range('A' + str(tr))    
        dest_cell.Value = col1
        dest_cell = ws.Range('B' + str(tr))    
        dest_cell.Value = col2
        dest_cell = ws.Range('C' + str(tr))    
        dest_cell.Value = col3
        dest_cell = ws.Range('D' + str(tr))    
        dest_cell.Value = col4
        dest_cell = ws.Range('E' + str(tr))    
        dest_cell.Value = col5
        dest_cell = ws.Range('F' + str(tr))    
        dest_cell.Value = col6
        dest_cell = ws.Range('G' + str(tr))    
        dest_cell.Value = col7
        dest_cell = ws.Range('H' + str(tr))    
        dest_cell.Value = col8  
        tr+=1   
    else:
        continue   #skip empty rows