Question

我想让selenium在拍摄截图之前等待。当我使用time.sleep（1）时，它给了我这个错误：

追踪（最近一次通话）：文件“test.py”，第12行，in driver.save_screenshot（ 'page.png'）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/we bdriver.py“，第1033行，在save_screenshot中 return self.get_screenshot_as_file（filename）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/we bdriver.py“，第1010行，在get_screenshot_as_file中 png = self.get_screenshot_as_png（）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/we bdriver.py“，第1042行，在get_screenshot_as_png中 return base64.b64decode（self.get_screenshot_as_base64（）。encode（'ascii'））文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/we bdriver.py“，第1052行，在get_screenshot_as_base64中 return self.execute（Command.SCREENSHOT）['value']

文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/we bdriver.py“，第312行，执行中 response = self.command_executor.execute（driver_command，params）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/re mote_connection.py“，第472行，执行中 return self._request（command_info [0]，url，body = data）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/re 在_request中，mote_connection.py“，第496行 resp = self._conn.getresponse（）在getresponse中输入文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py”，第1331行 response.begin（）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py”，第297行，开头版本，状态，原因= self._read_status（）在_read_status中输入文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py”，第258行 line = str（self.fp.readline（_MAXLINE + 1），“iso-8859-1”）文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socket.py”，第586行，在readinto中 return self._sock.recv_into（b） ConnectionResetError：[Errno 54]通过对等方重置连接

这是我的代码：

from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.support.ui import WebDriverWait
import os
import time

options = Options()
options.add_argument("--headless")
driver = webdriver.Firefox(firefox_options=options, executable_path = 
'/usr/local/bin/geckodriver', log_path=os.devnull)
driver.get('https://google.com/')
time.sleep(5)
driver.save_screenshot('page.png')
driver.quit()

如何在不收到此错误的情况下等待页面加载？

我知道你可以等待一个元素加载我只是想等待没有任何条件。

（当然，在google.com上没有更多内容可以加载我只是用这个例子来制作复活节的问题。）

Answer 1

将无条件等待添加到硒driver.get(URL)，driver.set_page_load_timeout(n) n = time/seconds并循环：

driver.set_page_load_timeout(n)        # Set timeout of n seconds for page load
loading_finished = 0                   # Set flag to 0
while loading_finished == 0:           # Repeat while flag = 0
    try:
       sleep(random.uniform(0.1, 0.5)) # wait some time
       website = driver.get(URL)       # try to load for n seconds
       loading_finished = 1            # Set flag to 1 and exit while loop
    except:
       logger.warn("timeout - retry")  # Indicate load fail
else:
    driver.save_screenshot('page.png') # In case of flag = 1
    driver.close()
    driver.quit()

Answer 2

# this code will will keep looping until the element is find so whatever how 
# much time the page will take time to load .    
driver = webdriver.Firefox(executable_path=r'./geckodriver')
itm = ""
while(True) : 
     try : 
         itm = driver.find_element_by_xpath("your xpath elem)
         break
     except : 
      pass

此外：

# this function will find all the ements with xpath EXPR
def Finds(EXPR) :
    itms = ""
    while(True) : 
        try : 
            itms = driver.find_elements_by_xpath(EXPR)
            break
        except : 
            pass
    return itms
#this function will find the elem had xpath EXPR
def Find(EXPR) :
    itm = ""
    while(True) : 
        try : 
            itm = driver.find_element_by_xpath(EXPR)
            break
        except : 
            pass
    return itm
#this function will find textbox or any thing you can insert into a text , this elem had xpath F , it insert text I
def Find_Insert(F,I) : 
    it = ""
    x1 = ""
    while(True) : 
        try : 
            print "find " , F
            x1 = driver.find_element_by_xpath(F)
            print("1")
            break
        except : 
            pass
    it = x1 
    while(True) : 
        try :
            print "sending " , I
            it.send_keys(I)
            break
        except : 
            pass
#this function will find textbox or any thing you can insert into a text , this elem had xpath F , it insert text I and then press key C
def Find_Insert_Click(F,I,C) : 
    it = ""
    x1 = ""
    while(True) : 
        try : 
            print "find " , F
            x1 = driver.find_element_by_xpath(F)
            print("1")
            break
        except : 
            pass
    it = x1 
    while(True) : 
        try :
            print "sending " , I
            it.send_keys(I)
            break
        except : 
            pass
    x1 = it  
    while(True) : 
        try : 
            print "Submit " , F
            it.send_keys(C)
            break
        except : 
            pass  
# this function will the elleent with xpath F and then clicke it 
def Find_Click(F) :
    it = ""
    x1 = ""
    while(True) : 
        try : 
            print "find " , F
            x1 = driver.find_element_by_xpath(F)
            break
        except : 
            pass
    it = x1 
    while(True) : 
        try : 
            print "click" , F
            it.click()
            break
        except : 
            pass

Python selenium等待页面加载而没有条件

2 个答案:

此外：