code: from selenium import webdriver
  from selenium.webdriver.support.ui import Select
  import pandas as pd
  import re
  import numpy as np
  import matplotlib.pyplot as plt
  import seaborn as sns
  import PyQt5
  import time
  """[Initial Settings]
  初期設定
  """
  options = webdriver.ChromeOptions()
  options.add_argument('--headeless')
  options.add_argument('--disable-gpu')
  options.add_argument('--lang-ja')
  browser = webdriver.Chrome(chrome_options=options, executable_path='./chromedriver')
  
  """[CSS Selector Settings]
  CSSセレクターの設定
  """
  PAGER = "li.pager-next a"
  word = input("検索したいキーワードを入力してください：")
  df_main = pd.DataFrame(columns=['在庫有無','タイトル','値段','URL'])
  df_graf = pd.DataFrame(columns=['SOLD','PRICE'])
  n = 1
  res = browser.get("https://www.mercari.com/jp/search/?page=" + str(n) +"&keyword="+ word)
  res = browser.get("https://www.mercari.com/jp/search/?page="+str(num)+"&keyword="+word)
  
  print(res)
  browser.get(res)
  while True:
      if PAGER:
          item_boxlist = browser.find_elements_by_css_selector(".items-box")
          for item_box in item_boxlist:
              try:
                  if len(item_box.find_elements_by_css_selector(".item-sold-out-badge")) > 0:
                      sold = "SOLD"
                  else:
                      sold = "NOT SOLD"
                  sub_title = item_box.find_element_by_class_name("items-box-body")
                  title = sub_title.find_element_by_tag_name("h3").text
                  item_price = item_box.find_element_by_css_selector(".items-box-price")
                  price_text = item_price.text
                  price_text = re.sub(r",", "", price_text).lstrip("¥ ")
                  price_text_int = int(price_text)
                  print(price_text_int)
                  url = item_box.find_element_by_tag_name("a").get_attribute("href")
                  data  = pd.Series( [ sold,title,price_text_int,url ], index=df_main.columns )
                  grdata = pd.Series( [ sold,price_text_int ], index=df_graf.columns )
                  df_main = df_main.append( data, ignore_index=True )
                  df_graf = df_graf.append( grdata, ignore_index=True )
              except Exception as e:
                  print(e)
          btn = browser.find_element_by_css_selector(PAGER).get_attribute('href')
          n += 1
          print('next url:{}'.format(btn))
          time.sleep(3)
          browser.get(btn)
          print('Moving to next page...')
      else:
          print('No items anymore...')
          break
  print(df_main)
  sns.stripplot(x='SOLD', y='PRICE', data=df_graf)
  plt.show()
  sns.pairplot(df_graf,hue="SOLD")
  plt.show()
  print('Writing out to CSV file...')
  df_main.to_csv("pricedata.csv", encoding="utf_8_sig")
  print("Done")
apis: pandas.Series matplotlib.pyplot.show pandas.DataFrame