簡單的If語句不起作用，比較字符串

Question

我只是在嘗試導航到網頁並檢查可用性。 當我找到可用性狀態並嘗試查看它是否為“有貨”時。 然后我想執行一些操作（在示例打印“ Found”中）。 當我測試它時，變量InStockCheck似乎沒有注冊為字符串。 我相信當我使用

InStockCheck = driver.find_element_by_id("availability").text

那不是字符串嗎？

當前輸出為：

InStock.
Yellow

所需的輸出：

InStock.
Found

碼：

from selenium import webdriver
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.common.keys import Keys
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import TimeoutException

import bs4 as bs

FoundItem = "Nope"
driver = webdriver.Safari()

while (FoundItem == "Nope"):

    #driver = webdriver.Safari()
    driver.get("https://www.amazon.ca/gp/product/B01MUAGZ49/ref=s9_acsd_top_hd_bw_bHp5rsB_c_x_w?pf_rd_m=A3DWYIK6Y9EEQB&pf_rd_s=merchandised-search-3&pf_rd_r=34J7S43PK58HEWFWQRCY&pf_rd_t=101&pf_rd_p=1a0d15fb-8f11-58d0-9960-246ad05b4dc8&pf_rd_i=16329250011")

    #SourceCodeTest = driver.page_source

    #Soup = bs.BeautifulSoup(SourceCodeTest, "lxml")

    WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, "availability")))
    InStockCheck = driver.find_element_by_id("availability").text
    InStockCheck = InStockCheck.replace(" ","")
    print(InStockCheck)

    if InStockCheck == "InStock.":
        print("Found")
    else:
        print("Yellow")

print("Pink")

Answer 1

您可以在添加任何if-else之前使用print檢查自己，檢查字符串，然后根據該字符串添加條件：

from selenium import webdriver
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.common.keys import Keys
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import TimeoutException

import bs4 as bs
import sys
FoundItem = "Nope"
driver = webdriver.Chrome()

while (FoundItem == "Nope"):

    #driver = webdriver.Safari()
    driver.get("https://www.amazon.ca/gp/product/B01MUAGZ49/ref=s9_acsd_top_hd_bw_bHp5rsB_c_x_w?pf_rd_m=A3DWYIK6Y9EEQB&pf_rd_s=merchandised-search-3&pf_rd_r=34J7S43PK58HEWFWQRCY&pf_rd_t=101&pf_rd_p=1a0d15fb-8f11-58d0-9960-246ad05b4dc8&pf_rd_i=16329250011")

    #SourceCodeTest = driver.page_source

    #Soup = bs.BeautifulSoup(SourceCodeTest, "lxml")

    WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, "availability")))
    InStockCheck = driver.find_element_by_id("availability").text
    InStockCheck_ori = InStockCheck.strip()
    print(InStockCheck_ori)
    InStockCheck1 = InStockCheck.replace(" ","")
    print(InStockCheck1)

輸出：

In Stock.
InStock.

Answer 2

我沒有Safari，所以我使用了Chrome。

driver = webdriver.Chrome()

由於某些原因，這會提供所需的結果。 確保提供一些條件以打破while循環。 例如，

# other imports
import time

# other code
numberOfRetries = 0

while (FoundItem == "Nope"):
    # other code

    if InStockCheck == "InStock.":
        print("Found")
        break
    elif numberOfTries > 4:
        print("Not found after waiting for 5 seconds")
        break
    else:
        print("Yellow")
        numberOfRetries = numberOfRetries + 1
        time.sleep(1)

print("Pink")