centos7 selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH

chrome_options = Options()
        chrome_options.add_argument('--headless')
        chrome_options.add_argument('--no-sandbox')
        chrome_options.add_argument('--disable-dev-shm-usage')
        chrome_options.add_argument('--disable-gpu')
        self.driver = webdriver.Chrome(chrome_options=chrome_options)

# coding=utf-8
import os
import re
from selenium import webdriver
# from pyvirtualdisplay import Display
from selenium.webdriver.chrome.options import Options
from datetime import datetime,timedelta
import time
from pyquery import PyQuery as pq
import re

import datetime

class consumer:

    def __init__(self):
        #通过配置文件获取IEDriverServer.exe路径
        # IEDriverServer ='C:Program FilesInternet ExplorerIEDriverServer.exe'
        # self.driver = webdriver.Ie(IEDriverServer)
        # self.driver.maximize_window()
        # self.driver = webdriver.PhantomJS(service_args=['--load-images=false'])
        # self.driver = driver = webdriver.Chrome()

        chrome_options = Options()
        chrome_options.add_argument('--headless')
        chrome_options.add_argument('--no-sandbox')
        chrome_options.add_argument('--disable-dev-shm-usage')
        chrome_options.add_argument('--disable-gpu')
        self.driver = webdriver.Chrome(chrome_options=chrome_options)

        # options = webdriver.FirefoxOptions()
        # # options.set_headless()
        # options.add_argument('--headless')
        # options.add_argument('--disable-gpu')
        # self.driver = webdriver.Firefox(firefox_options=options)
        # self.driver.set_page_load_timeout(10)
        # self.driver.maximize_window()

        # display = Display(visible=0, size=(800, 600))
        # display.start()
        # self.driver = webdriver.Firefox()
        # self.driver.maximize_window()



    def WriteLog(self, message,date):
        dir = os.path.join(os.getcwd(), 'consumer1')
        if not os.path.exists(dir):
            os.mkdir(dir)
        fileName = os.path.join(dir, date  +   '.txt')
        with open(fileName, 'a') as f:
            f.write(message)

    # http://search.cctv.com/search.php?qtext=消费主张&type=video
    def CatchData(self,url='http://search.cctv.com/search.php?qtext=%E6%B6%88%E8%B4%B9%E4%B8%BB%E5%BC%A0&type=video'):
        error = ''
        try:
            self.driver.get(url)

            selenium_html = self.driver.execute_script("return document.documentElement.outerHTML")
            doc = pq(selenium_html)


            message = '{0},{1}'.format( '标题', '时间')
            filename = datetime.datetime.now().strftime('%Y-%m-%d')
            self.WriteLog(message, filename)
            pages = doc("div[class='page']").find("a")
            # 2018-06-05 00:12:21
            pattern = re.compile("d{4}-d{2}-d{2}sd{2}:d{2}:d{2}")
            for index in range(1,6):
                url = "get_data('{0}', '消费主张', 'relevance', 'video', '-1', '1', '', '20', '1')".format(index)

                self.driver.execute_script(url)
                selenium_html = self.driver.execute_script("return document.documentElement.outerHTML")
                doc = pq(selenium_html)
                print(index)
                try:
                    Elements = doc("div[class='jvedio']").find("a")
                    for sub in Elements.items():
                        title = sub.attr('title')
                        print(title)
                        ts = pattern.findall(title)
                        strtime = ''
                        if ts and len(ts) == 1:
                            strtime = ts[0]
                        if strtime:
                            index1 = title.index(strtime)
                            title = str(title[0:index1]).replace("•","")

                        title = '
{0},{1}'.format(title, strtime)
                        self.WriteLog(title, filename)
                except Exception as e:
                    print("OS error: {0}".format(e))


        except Exception as e1:
            error = "ex"


# python "C:Program Files (x86)JetBrainsPyCharm 2016.2.3helperspydevsetup_cython.py" build_ext --inplace


obj = consumer()

obj.CatchData()
# obj.CatchContent('')
# obj.export('')