Extract some basic data with beautiful soup - selenium-webdriver

Question

Recently I tried to start web-scraping with python, in order to extract some basic informations in instagram using beautiful soup.
I wrote a simple code which is showed below:
from bs4 import BeautifulSoup
import selenium.webdriver as webdriver
url = 'http://instagram.com/umnpics/'
driver = webdriver.Firefox()
driver.get(url)
soup = BeautifulSoup(driver.page_source)
for x in soup.findAll('li', {'class':'photo'}):
print (x)
but after run it, some exceptions occured:
Traceback (most recent call last):
File "C:\Users\Mhdn\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\common\service.py", line 76, in start
stdin=PIPE)
File "C:\Program Files (x86)\Python37-32\lib\subprocess.py", line 775, in __init__
restore_signals, start_new_session)
File "C:\Program Files (x86)\Python37-32\lib\subprocess.py", line 1178, 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\Mhdn\Desktop\test2.py", line 5, in <module>
driver = webdriver.Firefox()
File "C:\Users\Mhdn\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\firefox\webdriver.py", line 164, in __init__
self.service.start()
File "C:\Users\Mhdn\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\common\service.py", line 83, in start
os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH.

Answer 1

You need to download geckodriver to your local system from here
In your code you need to provide executable_path for the geckodriver
Adding executable_path to your code:
from bs4 import BeautifulSoup
import selenium.webdriver as webdriver
url = 'http://instagram.com/umnpics/'
driver = webdriver.Firefox(executable_path= 'path/to/geckodriver') #<---Add path to your geckodriver
#example: driver = webdriver.Firefox(executable_path= 'home/downloads/geckodriver')
driver.get(url)
soup = BeautifulSoup(driver.page_source)
for x in soup.findAll('li', {'class':'photo'}):
print (x)