点击后Python氦气获取表格内容

Question

我正在用氦气刮网页。

result = start_firefox(                                                                                   
"https://www.medtronic.com/covidien/en-us/products/brain-monitoring/bis-monitoring-system.html",      
)                                                                                                         
                                    
result.find_element_by_class_name("js-open-table-overlay").click()   

点击操作后，我会看到一个表格，我需要抓取表格的内容，但点击后我如何选择表格？

Answer 1

您需要使用find_elements_...来获取所有<table>，并使用for-循环单独处理每个表，使用(嵌套(for-循环来获取表中的<tr>(行(和<th>(标头(，并使用(嵌套的(for-循环来获取行中的<td>(单元格(。您还必须将元素添加到正确的(嵌套的(列表中。

---

但是这个页面使用普通的<table>，并且这个表一直在HTML中(不是由javaScript添加的(，所以使用pandas.read_html()获取所有<table>可以更简单

import pandas as pd
url = "https://www.medtronic.com/covidien/en-us/products/brain-monitoring/bis-monitoring-system.html"
all_tables = pd.read_html(url)
for table in all_tables:
print(table.to_string())

结果

ORDER CODE                                                      DESCRIPTION UNIT OF MEASURE  QUANTITY
0      186-1014                        BIS™ Complete 4-Channel Monitoring System            Each         1
1      186-0210                                  BIS™ Complete 2-Channel Monitor            Each         1
2  186-0224-AMS  BIS™ LOC 4-Channel Monitor with Patient Interface Cable (PIC-4)            Each         1
3  186-0195-AMS          BIS™ LOC 2-Channel Monitor with Patient Interface Cable            Each         1
4      186-0212                                            BIS™ Bilateral Sensor            Each         1
DISPLAY                                               BIS™ COMPLETE 2-CHANNEL MONITOR                                     BIS™ COMPLETE 4-CHANNEL MONITORING SYSTEM
0          Parameters                                                    BIS, SQI, EMG, SR, BC, EEG                                           BIS, SQI, EMG, SR, BC, TP, SEF, EEG
1  Trended parameters                                                         BIS, SQI, EMG, SR, BC                                                    BIS, SQI, EMG, SR, BC, SEF
2          BIS™ alarm  Upper and lower limit, results in visual and audible alert when out of range  Upper and lower limit, results in visual and audible alert when out of range