22.2.14 -- station B login with code -for circular list form - 'no attribute' - 'needs to be in path selenium screenshot deviation -crop clipping error -bytesio(), etc

Try B Station login , The problems encountered are roughly as follows .

I learned from Cui Qingcai 《python3 Web crawler development practice 》

1.EC Brackets are required in the display waiting module

2.for List form of loop

3. Report errors ：'click_image' object has no attribute 'wait'

4. Report errors ：chromedriver' executable needs to be in PATH

5. Report errors ：presence_of_element_located() takes 1 positional argument but 2 were given

6. Report errors ：int() argument must be a string, a bytes-like object or a number, not 'list'

7.selenium The screenshot deviates

8.crop（） Function clipping error

9.BytesIO（） Usage of

10.file.getvalue() Usage of

（ One ）1.EC Brackets are required in the display waiting module

EC Display module , Look at the code

    def login_in(self):
        self.browser.get(self.url)
        self.browser.maximize_window()
        username = self.wait.until(EC.presence_of_element_located((By.ID, 'login-username' )))
        password = self.wait.until(EC.presence_of_element_located((By.ID, 'login-passwd' )))
        button = self.wait.until(EC.element_to_be_clickable((By.LINK_TEXT,' Sign in ')))
        username.send_keys(bilibili_username)
        password.send_keys(bilibili_password)
        button.click()
        time.sleep(2)

Be careful EC.presence_of_element_located() In this function, you need to write

EC.presence_of_element_located(（By.ID, 'login-username'）) There needs to be a bracket inside

（ Two ）2.for List form of loop

for There are two ways of cycling , The writing method encountered this time is like this

    def get_points(self,captch_result):
        '''
        :param captch_result:  Super Eagle output 
        :return:
        '''
        groups = captch_result.get('pic_str').split('|')
        locations = [[int(number) for number in group.split(',')] for group in groups]
        return locations

among int（number） It's the output ,

for number in group.split(',')  It's an inner loop 

for group in groups  It's the outer cycle 

However, I'm not very clear about the output content , To be continued .

（ 3、 ... and ） Report errors ：'click_image' object has no attribute 'wait'

        EC According to wait

class click_image():
    def first_login(self):
        self.url = 'https://passport.bilibili.com/login'
        self.browser = webdriver.Chrome()
        self.wait = WebDriverWait(self.browser,20)
        self.chaojiying = Chaojiying(chaojiying_username,chaojiying_password,chaojiying_soft_id)

It started like this , Later, he kept telling me mistakes , I changed the code to

class click_image():
    def __init__(self):
        self.url = 'https://passport.bilibili.com/login'
        self.browser = webdriver.Chrome()
        self.wait = WebDriverWait(self.browser,20)
        self.chaojiying = Chaojiying(chaojiying_username,chaojiying_password,chaojiying_soft_id)

Change the function name to __init__（self）: That's all right.

（ Four ）chromedriver' executable needs to be in PATH

This just needs to be chromedriver.exe Put in separately contain chrome.exe and python37 In the folder of , then chromedriver.exe Put the system into the environment variable PATH Then you can , as follows

  Then right click my computer - attribute - Advanced system setup - environment variable - Double click... In the system variable path- newly build , take

The address in the above figure ：C:\Users\15466\AppData\Local\Google\Chrome\Application

After putting it in , Just make sure all the way .

（ 5、 ... and ）presence_of_element_located() takes 1 positional argument but 2 were given

  The solution is the first one mentioned

（ 6、 ... and ）int() argument must be a string, a bytes-like object or a number, not 'list'

    def touch_click(self,locations):
        for location in locations:
            print(location)
            ActionChains(self.browser).move_to_element_with_offset(self.get_image(),location[0],
                                                                   location[1]).click().perform()
            time.sleep(1)

↑↑↑ This is right .

The reason why I made a mistake at that time was ：

ActionChains(self.browser).move_to_element_with_offset(self.get_image(),locations[0],
                                                       locations[1]).click().perform()

Yes , Look carefully and you'll find that I'm location A is added after s

（ 7、 ... and ）selenium The screenshot deviates

1. Zoom ratio of computer system

I am here 125％ , So just change it to 100％, Then restart the computer

2. Multiply the following coordinates by 1.25（ as follows ）

    def crop_screenshot(self,name='captch.png'):
        top,bottom,left,right= self.get_image_location()
        screenshot = self.get_screenshot()
        captch = screenshot.crop((left*1.25,top*1.25,right*1.25,bottom*1.25))
        captch.save(name)
        return captch

3. One more , Anyway, I'm too lazy to watch

（ 8、 ... and ）crop（） Function clipping error

    def crop_screenshot(self,name='captch.png'):
        top,bottom,left,right= self.get_image_location()
        screenshot = self.get_screenshot()
        captch = screenshot.crop((left,top,right,bottom))
        captch.save(name)
        return captch

crop（x,y,x+width,y+height）

But at the beginning, what the brain said was

captch = screenshot.crop((top,bottom,left,right))

But it makes the child sad .

（ Nine ）BytesIO（） Usage of

BytesIO It can read and write in memory bytes

Sure

file = BytesIO()

To create a folder

（ Ten ）file.getvalue() Usage of

Can anyone explain , I don't understand ...

Attach code ：

from PIL import Image
from pach.chaojiying_Python.chaojiying import Chaojiying
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver import ActionChains
import time
from io import BytesIO
''' preparation '''
chaojiying_username = ' Super Eagle username '
chaojiying_password = ' Super Eagle code '
chaojiying_soft_id = ' Software ID'
chaojiying_kind = ' Verification code type '
bilibili_username = 'B Station account '
bilibili_password = 'B Station password '

class click_image():
    def __init__(self):
        self.url = 'https://passport.bilibili.com/login'
        self.browser = webdriver.Chrome()
        self.wait = WebDriverWait(self.browser,20)
        self.chaojiying = Chaojiying(chaojiying_username,chaojiying_password,chaojiying_soft_id)
    def login_in(self):
        self.browser.get(self.url)
        self.browser.maximize_window()
        username = self.wait.until(EC.presence_of_element_located((By.ID, 'login-username' )))
        password = self.wait.until(EC.presence_of_element_located((By.ID, 'login-passwd' )))
        button = self.wait.until(EC.element_to_be_clickable((By.LINK_TEXT,' Sign in ')))
        username.send_keys(bilibili_username)
        password.send_keys(bilibili_password)
        button.click()
        time.sleep(2)
    def close(self):
        self.browser.close()
    def get_image(self):
        images = self.wait.until(EC.presence_of_element_located((By.CLASS_NAME,'geetest_item_img')))
        return images
    def get_image_location(self):
        images = self.get_image()
        location = images.location
        size = images.size
        top,bottomm,left,right = location['y'],location['y']+size['height'],location['x'],location['x']+size['width']
        return (top,bottomm,left,right)
    def get_screenshot(self):
        screenshot = self.browser.get_screenshot_as_png()
        screenshot = Image.open(BytesIO(screenshot))
        return screenshot
    def crop_screenshot(self,name='captch.png'):
        top,bottom,left,right= self.get_image_location()
        screenshot = self.get_screenshot()
        captch = screenshot.crop((left,top,right,bottom))
        captch.save(name)
        return captch
    def get_points(self,captch_result):
        '''
        :param captch_result:  Super Eagle output 
        :return:
        '''
        groups = captch_result.get('pic_str').split('|')
        locations = [[int(number) for number in group.split(',')] for group in groups]
        return locations
    def touch_click(self,locations):
        for location in locations:
            print(location)
            ActionChains(self.browser).move_to_element_with_offset(self.get_image(),location[0],
                                                                   location[1]).click().perform()
            time.sleep(1)
    def login_click(self):
        button = self.wait.until(EC.element_to_be_clickable((By.LINK_TEXT,' confirm ')))
        button.click()
    def bilibili_login(self):
        self.login_in()
        captch = self.crop_screenshot()
        file = BytesIO()
        captch.save(file , format='PNG' )
        result = self.chaojiying.post_pic(file.getvalue(),chaojiying_kind)
        print(result)
        locations = self.get_points(result)
        self.touch_click(locations)
        self.login_click()

if __name__ == '__main__':
    login = click_image()
    login.bilibili_login()