Python Pause loop on input

Question

I have a loop that is processing a block of actions:

import threading
from selenium import webdriver
import os
from time import sleep
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.options import Options
import threading
import time, random

def get_player_prices(driver):
    lst_price = []
    #Determine list of first 20 cards
    lst_cards = driver.find_element_by_class_name("ui-layout-right") \
        .find_element_by_class_name("paginated-item-list") \
        .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
    #Loop through list of first 20 cards and determine prices
    for card in lst_cards:
        str_player_buy_now_value = card.find_element_by_xpath("..") \
            .find_element_by_class_name("currency-coins").text
        int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
        lst_price.append(int_player_buy_now_value)
    #Try with the next 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try to determine third 20 entries
    try:
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the fourth 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the 5th 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the 6th 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the 7th 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the 8th 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the 9th 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price
    #Try with the 10th 20 cards
    try:
        btn_next = driver.find_element_by_xpath('/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/section/div[2]/div/button[2]')
        btn_next.click()
        time.sleep(0.8)
        lst_cards = driver.find_element_by_class_name("ui-layout-right") \
            .find_element_by_class_name("paginated-item-list") \
            .find_elements_by_xpath(".//*[contains(text(), 'Buy Now')]")
        # Loop through list of first 20 cards and determine prices
        for card in lst_cards:
            str_player_buy_now_value = card.find_element_by_xpath("..") \
                .find_element_by_class_name("currency-coins").text
            int_player_buy_now_value = int(str_player_buy_now_value.replace(",", "").strip())
            lst_price.append(int_player_buy_now_value)
    except:
        return lst_price

    return lst_price

options = Options()
#options.add_argument('headless')
options.add_argument('user-data-dir=C:\\Users\\timth\\AppData\\Local\\Google\\Chrome\\User Data\\')
driver = webdriver.Chrome(executable_path='C:\\Users\\timth\\Documents\\GitHub\\trade_helper\\chromedriver.exe', options=options)

# Open session
driver.get('https://www.xxxxxxxx')

time.sleep(10)

wait = WebDriverWait(driver, 3)


def wait_filters_set_up():
    # ask user to set up search filters
    while True:
        user_input_filters = input("Set up filters and type 'go' to continue\n")
        if user_input_filters != "go":
            print("Type 'go' to continue\n")
            continue
        else:
            break

def wait_user_start():
    # request user input start
    global bol_start_tool
    bol_start_tool = False
    while True:
        user_input_max_price = input('Enter max buy now price (>250):')
        if user_input_max_price.isdigit():
            int_user_input_max_price = int(user_input_max_price)
            if int_user_input_max_price > 250:
                break
            else:
                print('Max buy now price must be >250')
                continue
        else:
            print('Enter max buy now price (>250):')
            continue
    print(f'Max BIN set to {int_user_input_max_price} coins')
    time.sleep(3)

    while True:
        user_input_start = input("Press ENTER to start \n")
        if user_input_start != "":
            print("Press ENTER!")
            continue
        else:
            bol_start_tool = True
            break

def start_process():
    # actual start of PROCESS
    global bol_start_tool, continue_global, continue_process
    if bol_start_tool:
        continue_process = True

        thread_1 = threading.Thread(target=stop_or_restart)
        thread_1.daemon = True # without the daemon parameter, the function in parallel will continue even if your main program ends
        thread_1.start()

        print("Processing...")
        example_of_process()

def stop_or_restart():
    global continue_process, continue_global, count
    while continue_process:
        user_input = input("You can restart with R + Enter\n or stop with S + Enter \n")
        if user_input == 's':
            continue_process = False
            continue_global = False
            print("End of program, bye :)")
        if user_input == 'r':
            continue_process = False
            count = 0
            print("Restarting")

def example_of_process():
    global continue_process, count, int_user_input_max_price
    while continue_process:
        time.sleep(1)

        btn_search = driver.find_element_by_xpath(
            '/html/body/main/section/section/div[2]/div/div[2]/div/div[2]/button[2]')

        # filters.predefine_filters_in_search_mask()

        # set max price
        ipt_max_price = driver.find_element_by_xpath(
            "/html/body/main/section/section/div[2]/div/div[2]/div/div[1]/div[2]/div[6]/div[2]/input")
        ipt_max_price.click()
        time.sleep(1)
        ipt_max_price.send_keys(int_user_input_max_price)
        time.sleep(2)

        # Set min price
        int_players_bought = 0
        int_min_price = 200

        # Buy until 25 players were bought
        while int_players_bought < 100:

            if int_min_price >= int_user_input_max_price:
                int_min_price = 200

            ipt_min_price = wait.until(EC.element_to_be_clickable(
                (By.XPATH, '/html/body/main/section/section/div[2]/div/div[2]/div/div[1]/div[2]/div[5]/div[2]/input')))
            ipt_min_price.clear()
            ipt_min_price.click()
            time.sleep(0.5)
            ipt_min_price.send_keys(int_min_price)
            time.sleep(0.5)

            # click search button
            time.sleep(random.randint(1, 4))  # random sleep timer
            # print(f'Random delay is {}')
            btn_search = driver.find_element_by_xpath(
                '/html/body/main/section/section/div[2]/div/div[2]/div/div[2]/button[2]')
            btn_search.click()

            # if player is found, buy him. Else go back to search directly

            try:
                btn_buy_now = wait.until(EC.element_to_be_clickable((By.XPATH,
                                                                     '/html/body/main/section/section/div[2]/div/div/section[2]/div/div/div[2]/div[2]/button[2]')))
                btn_buy_now.click()
                confirm_button = wait.until(
                    EC.element_to_be_clickable((By.XPATH, '/html/body/div[1]/section/div/div/button[1]')))
                confirm_button.click()
                time.sleep(1)
                try:
                    time.sleep(1)
                    btn_price_check = wait.until(EC.element_to_be_clickable((By.XPATH,
                                                                             '/html/body/main/section/section/div[2]/div/div/section[2]/div/div/div[2]/div[3]/button[8]')))
                    btn_price_check.click()

                    lst_price = get_player_prices(driver)
                    int_min_player_buy_now_value = min(lst_price)
                    time.sleep(1)

                    # Determine + click Back button
                    btn_back_from_price_check = driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[2]/div[1]/button')
                    btn_back_from_price_check.click()
                    time.sleep(1)

                    # Determine player name + price payed
                    div_player_name = driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[1]/div/ul/li/div/div[1]/div[2]')
                    str_player_name = div_player_name.text
                    int_player_price = int(driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[2]/div/div/div[2]/div[1]/div[2]/div/span[2]').text.replace(
                        ",", ""))

                    # Determine + click List Player on Market button
                    time.sleep(1)
                    btn_list_player_on_market = driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/div/div[2]/div[2]/div[1]/button')
                    btn_list_player_on_market.click()
                    time.sleep(1)

                    # Determine + fill Start Price Input field
                    ipt_start_price = driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/div/div[2]/div[2]/div[2]/div[2]/div[2]/input')
                    ipt_start_price.click()
                    time.sleep(1)
                    ipt_start_price.send_keys("9999999999")
                    time.sleep(1)

                    # Determine + fill Buy Now Price Input field
                    ipt_buy_now_price = driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/div/div[2]/div[2]/div[2]/div[3]/div[2]/input')
                    ipt_buy_now_price.click()
                    time.sleep(1)

                    # Pricing

                    if int_min_player_buy_now_value > int_player_price:
                        ipt_buy_now_price.send_keys(str(int(int_min_player_buy_now_value)))
                        int_expected_profit = int((int_min_player_buy_now_value - int_player_price) * 0.95)
                    else:
                        ipt_buy_now_price.send_keys(str(int(int_player_price * 1.25)))
                        int_expected_profit = int(((int_player_price * 1.25) - int_player_price) * 0.95)
                    time.sleep(1)

                    # List player on market
                    btn_list_player = driver.find_element_by_xpath(
                        '/html/body/main/section/section/div[2]/div/div/section[2]/div[2]/div/div[2]/div[2]/div[2]/button')
                    btn_list_player.click()
                    # btn_send_to_transfer_list = wait.until(EC.element_to_be_clickable((By.XPATH, '/html/body/main/section/section/div[2]/div/div/section[2]/div/div/div[2]/div[3]/button[7]')))
                    # btn_send_to_transfer_list.click()
                    int_players_bought += 1  # increment players bought count
                    print(f'Bought player: {str_player_name} for {int_player_price}')
                    print(f'Estimated profit: {int_expected_profit}')
                    print(f'Player counter {str(int_players_bought)}/25')
                    time.sleep(1)
                    btn_back = wait.until(
                        EC.element_to_be_clickable((By.XPATH, '/html/body/main/section/section/div[1]/button[1]')))
                    btn_back.click()

                except:
                    time.sleep(1)
                    btn_back = wait.until(
                        EC.element_to_be_clickable((By.XPATH, '/html/body/main/section/section/div[1]/button[1]')))
                    btn_back.click()

            except:
                time.sleep(1)
                btn_back = wait.until(
                    EC.element_to_be_clickable((By.XPATH, '/html/body/main/section/section/div[1]/button[1]')))
                btn_back.click()

            time.sleep(0.5)
            if int_min_price < 1000:
                int_min_price += 50
            elif int_min_price < 10000:
                int_min_price += 100
            elif int_min_price < 100000:
                int_min_price += 250
            else:
                int_min_price += 1000


def main_function():
    global continue_global, count
    continue_global = True
    count = 0
    while continue_global:
        wait_filters_set_up()
        wait_user_start()
        start_process()

main_function()

The part starting a #MY CODE ... is beeing repeated infinitely,

I need to find a way, that the user has the chance to stop the process and also to restart the process.

The restart should start at "# ask user to set up search filters" because normally this case comes up when the user wants to stop, to change his searching filters.

Currently I am not working with a GUI (it is palnned tho) so I thought about setting up two user input options one for stop and one for restarting.

I am using selenium with chromedriver, so a total shutdown of the program and a manual relaunch would not be a solution. Since then the user would have to re-login etc. everytime he wants to make change in filters.

Is there any way, I could implement these two functions into my code?

Or do you have any advice how I would have to re-wright m code to make it work?

Any help is highly appreciated.

EDIT: @phoenix this is what I made of your code. I have update my hole code above.

Phoenixo · Accepted Answer · 2019-12-13 12:49:40Z

1

You need a global while loop so it is easier to manage the "Restart" or the "Stop". I also changed your code into functions so it is clearer. And for a GUI or parallel actions in general, have a look at threading

def wait_filters_set_up():
    # ask user to set up search filters
    while True :
        user_input_filters = input("Set up filters and type 'go' to continue\n")
        if user_input_filters != "go":
            print("Type 'go' to continue\n")
            continue
        else:
            break

def wait_user_start():
    # request user input start
    global bol_start_tool
    bol_start_tool = False
    while True:
        user_input_start = input("Press ENTER to start \n")
        if user_input_start != "":
            print("Press ENTER!")
            continue
        else:
            bol_start_tool = True
            break

def start_process():
    # actual start of PROCESS
    global bol_start_tool, continue_global
    if bol_start_tool:
        print("Processing...")

        continue_process = True
        while continue_process:
            user_input = input("You can restart with R + Enter\n or stop with S + Enter \n")
            if user_input == 's':
                continue_process = False
                continue_global = False
                print("End of program, bye :)")
            if user_input == 'r':
                continue_process = False
                print("Restarting")

def main_function():
    global continue_global
    continue_global = True
    while continue_global:
        wait_filters_set_up()
        wait_user_start()
        start_process()

main_function()

EDIT : now I use a thread to have 2 actions in parallel : your main process, and a functions that is waiting for user input (Stop or Restart). Here I implemented a basic counter to simulate your main process.

import threading
import time

def wait_filters_set_up():
    # ask user to set up search filters
    while True :
        user_input_filters = input("Set up filters and type 'go' to continue\n")
        if user_input_filters != "go":
            print("Type 'go' to continue\n")
            continue
        else:
            break

def wait_user_start():
    # request user input start
    global bol_start_tool
    bol_start_tool = False
    while True:
        user_input_start = input("Press ENTER to start \n")
        if user_input_start != "":
            print("Press ENTER!")
            continue
        else:
            bol_start_tool = True
            break

def start_process():
    # actual start of PROCESS
    global bol_start_tool, continue_global, continue_process
    if bol_start_tool:
        continue_process = True

        thread_1 = threading.Thread(target=stop_or_restart)
        thread_1.daemon = True # without the daemon parameter, the function in parallel will continue even if your main program ends
        thread_1.start()

        print("Processing...")
        example_of_process()

def stop_or_restart():
    global continue_process, continue_global, count
    while continue_process:
        user_input = input("You can restart with R + Enter\n or stop with S + Enter \n")
        if user_input == 's':
            continue_process = False
            continue_global = False
            print("End of program, bye :)")
        if user_input == 'r':
            continue_process = False
            count = 0
            print("Restarting")

def example_of_process():
    global continue_process, count
    while continue_process:
        print("count", count)
        count += 1
        time.sleep(1)

def main_function():
    global continue_global, count
    continue_global = True
    count = 0
    while continue_global:
        wait_filters_set_up()
        wait_user_start()
        start_process()

main_function()

edited Dec 13, 2019 at 12:49

answered Dec 12, 2019 at 16:33

Phoenixo

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5 Comments

exec85 Over a year ago

thanks @phoenixo ! one issue, when I paste my actual process code between print("Processing...") and "continuer_process = True, the input for R or S is not popping up. If I paste my code after continuer_process, it only start after I press S. But I cant press S or R after again.

exec85 Over a year ago

this is it! exactly what I needed! thank you so much! :-)

exec85 Over a year ago

ok, when I copy paste your code into a new epty file, it is exactly working as it should. But for some reason, as soon as I exchange your "example_process" code with my actual code, the start_Stop is not working anymore. It is showing up in console, but when I type in "R" or "S" it is not braking my process. It is a kinda big block of code with while loops etc. too big to paste here. Maybe you see a chance helping me out?

Phoenixo Over a year ago

Maybe there is another input("...") in your big bloc of code, which makes problems with the stop_restart input. Maybe you could solve your problem using a GUI, but I can't be sure since I can't test the whole code by myself

exec85 Over a year ago

I thought the same, but what it does is: it starts the start_stop thread and also the main process. Main process keeps running and running as usual. I also see the "..press R... S" request in my console. Just it doesn't break the main big process anymore. It give back "Restarting..." and the main thread keeps running ;-) Well I am a total bgeinner, just startet one week ago. I think I park this problem, cant see where to adjust tbh :-)

Samuel Middendorp · Accepted Answer · 2019-12-12 12:52:11Z

0

Wrap the 2 while loops in a function. Then whenever you want to leave the function you just return out of it. Whenever you wanna redo the process you just call the function again.

answered Dec 12, 2019 at 12:52

Samuel Middendorp

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Comments

Aleksandr Beliavski · Accepted Answer · 2019-12-12 13:00:22Z

0

need_to_stop = False

While !need_to_stop:    
    # ask user to set up search filters
    While True:
      user_input_filters = input("Set up filters and type 'go' to continue")
      # ***


    bol_start_tool = False

    # request user input start
    While True:
      user_input_start = input("Press ENTER to start")
      # ***

    # actual start of PROCESS
    if bol_start_tool:

    # MY CODE FOR PROCESS (searching according to the filters and further on working with the results)
    break; # <- this is your solution

answered Dec 12, 2019 at 13:00

Aleksandr Beliavski

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