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

I get the following error:

Traceback (most recent call last):
 File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\common\service.py", line 74, in start
 stdout=self.log_file, stderr=self.log_file)
 File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 707, in __init__
 restore_signals, start_new_session)
 File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 992, in _execute_child
 startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 File "C:/Users/ishaq/AppData/Local/Programs/Python/Python36/headless.py", line 9, in <module>
 driver = webdriver.Chrome(executable_path=os.path.abspath("chromedriver"), chrome_options=chrome_options)
 File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 62, in __init__
 self.service.start()
 File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\common\service.py", line 81, in start
 os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home

And my script is:

import os 
from selenium import webdriver 
from selenium.webdriver.common.keys import Keys 
from selenium.webdriver.chrome.options import Options 

chrome_options = Options() 
chrome_options.add_argument("--headless") 
chrome_options.binary_location = 
r'C:\Users\ishaq\Desktop\chrome\chromedriver.exe' 
driver = webdriver.Chrome(executable_path=os.path.abspath("chromedriver"), 
chrome_options=chrome_options) 
driver.get("http://www.duo.com")

magnifying_glass = driver.find_element_by_id("js-open-icon") 
if magnifying_glass.is_displayed(): 
 magnifying_glass.click() 
else: 
 menu_button = driver.find_element_by_css_selector(".menu-trigger.local") 
 menu_button.click() 

search_field = driver.find_element_by_id("site-search") 
search_field.clear() 
search_field.send_keys("Olabode") 
search_field.send_keys(Keys.RETURN) 
assert "Looking Back at Android Security in 2016" in driver.page_source
driver.close()