【发布时间】:2021-06-04 17:47:01
【问题描述】:
通过阅读、视频、SO 和社区的帮助,我能够使用 Selenium 和 Python 从 Tessco.com 抓取数据。
本网站需要联合国和密码。我已将其包含在下面的代码中,这是非必要的凭据,专门用于提问。
我的最终目标是循环浏览零件编号的 Excel 列表,并搜索包括价格在内的一组参数。在引入要循环浏览的列表之前,我希望将所需信息与抓取的内容隔离开来。
我不确定如何过滤此信息。
代码如下:
import time
#Need Selenium for interacting with web elements
from selenium import webdriver
from selenium.webdriver.support import expected_conditions as EC
#Need numpy/pandas to interact with large datasets
import numpy as np
import pandas as pd
chrome_path = r"C:\Users\James\Documents\Python Scripts\jupyterNoteBooks\ScrapingData\chromedriver_win32\chromedriver.exe"
driver = webdriver.Chrome(chrome_path)
driver.get("https://www.tessco.com/login")
userName = "FirstName.SurName321123@gmail.com"
password = "PasswordForThis123"
#Set a wait, for elements to load into the DOM
wait10 = WebDriverWait(driver, 10)
wait20 = WebDriverWait(driver, 20)
wait30 = WebDriverWait(driver, 30)
elem = wait10.until(EC.element_to_be_clickable((By.ID, "userID")))
elem.send_keys(userName)
elem = wait10.until(EC.element_to_be_clickable((By.ID, "password")))
elem.send_keys(password)
#Press the login button
driver.find_element_by_xpath("/html/body/account-login/div/div[1]/form/div[6]/div/button").click()
#Expand the search bar
searchIcon = wait10.until(EC.element_to_be_clickable((By.XPATH, "/html/body/header/div[2]/div/div/ul/li[2]/i")))
searchIcon.click()
searchBar = wait10.until(EC.element_to_be_clickable((By.XPATH, '/html/body/header/div[3]/input')))
searchBar.click()
#load in manufacture part number from a collection of components, via an Excel file
#Enter information into the search bar
searchBar.send_keys("HL4RPV-50" + '\n')
# wait for the products information to be loaded
products = wait30.until(EC.presence_of_all_elements_located((By.XPATH,"//div[@class='CoveoResult']")))
# create a dictionary to store product and price
productInfo = {}
# iterate through all products in the search result and add details to dictionary
for product in products:
# get product info such as OEM, Description and Part Number
productDescr = product.find_element_by_xpath(".//a[@class='productName CoveoResultLink hidden-xs']").text
mfgPart = product.find_element_by_xpath(".//ul[@class='unlisted info']").text.split('\n')[3]
mfgName = product.find_element_by_tag_name("img").get_attribute("alt")
# get price
price = product.find_element_by_xpath(".//div[@class='price']").text.split('\n')[1]
# add details to dictionary
productInfo[mfgPart, mfgName, productDescr] = price
# print products information
print(productInfo)
输出是
{('MFG PART #: HL4RPV-50', 'CommScope', '1/2" Plenum Air Cable, Off White'): '$1.89', ('MFG PART #: HL4RPV-50B', 'CommScope', '1/2" Plenum Air Cable, Blue'): '$1.89', ('MFG PART #: L4HM-D', 'CommScope', '4.3-10 Male for 1/2" AL4RPV-50,LDF4-50A,HL4RPV-50'): '$19.94', ('MFG PART #: L4HR-D', 'CommScope', '4.3-10M RA for 1/2" AL4RPV-50, LDF4-50A, HL4RPV-50'): '$39.26', ('MFG PART #: UPL-4MT-12', 'JMA Wireless', '4.3-10 Male Connector for 1/2” Plenum Cables'): '$32.99', ('MFG PART #: UPL-4F-12', 'JMA Wireless', '4.3-10 Female Connector for 1/2" Plenum'): '$33.33', ('MFG PART #: UPL-4RT-12', 'JMA Wireless', '4.3-10 R/A Male Connector for 1/2" Plenum'): '$42.82', ('MFG PART #: L4HF-D', 'CommScope', '4.3-10 Female for 1/2 in AL4RPV-50, LDF4-50A'): '$20.30'}
我只想要自动搜索中引用的内容,所以对于这个示例,我将寻找
('MFG PART #: HL4RPV-50', 'CommScope', '1/2" Plenum Air Cable, Off White'): '$1.89'
最终,我计划将 HL4RPV-50 标记替换为项目列表,但现在,我相信我应该过滤所需的内容。
我怀疑逻辑是否正确,但我已尝试打印符合搜索要求的任何部分的产品信息,如下所示。
for item in mfgPart:
if mfgPart == "HL4RPV-50":
print(productInfo)
但上面的代码只是像以前一样打印了所有的输出。
然后我尝试导入 itertools 并运行以下命令:
print(dict(itertools.islice(productInfo.items(), 1)))
这实际上返回了我想要的行项目,但不能保证第一个返回的项目就是我要找的。如果我可以根据给定的部件号过滤掉确切的搜索,那将是最好的。
有没有办法可以根据输入过滤结果?
非常感谢任何提示。
【问题讨论】:
标签: python python-3.x list selenium dictionary