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python+html语音人物交互_使用Python读取HTML表并与之交互

2024-11-11 来源:个人技术集锦

这个页面非常动态(而且非常慢,至少在我这边是这样),包括JavaScript和多个异步请求来获取数据。用requests来实现这一点并不容易,您可能需要通过selenium使用浏览器自动化。在

这里有一些东西让你开始。注意Explicit Waits的用法:import pandas as pd

import time

from selenium import webdriver

from selenium.webdriver.common.by import By

from selenium.webdriver.support.select import Select

from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Firefox()

driver.maximize_window()

driver.get("http://quotes.freerealtime.com/dl/frt/M?IM=quotes&type=Time%26Sales&SA=quotes&symbol=IBM&qm_page=45750")

wait = WebDriverWait(driver, 400) # 400 seconds timeout

# wait for select element to be visible

time_select = Select(wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "select[name=time]"))))

# select 9:30 and go

time_select.select_by_visible_text("09:30")

driver.execute_script("arguments[0].click();", driver.find_element_by_id("go"))

time.sleep(2)

while True:

# wait for the table to appear and load to pandas dataframe

table = wait.until(EC.presence_of_element_located((By.ID, "qmmt-time-and-sales-data-table")))

df = pd.read_html(table.get_attribute("outerHTML"))

print(df[0])

# wait for offset select to be visible and forward it 1 min

offset_select = Select(wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "select[name=timeOffset]"))))

offset_select.select_by_value("1")

time.sleep(2)

# TODO: think of a break condition

请注意,这在我的机器上运行得非常非常慢,我不确定它在你的机器上运行得有多好,但它一直在无休止的循环中向前推进1分钟(您可能需要在某个时刻停止它)。在

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