File download handling in Selenium Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the download directory in Selenium WebDriver.

Selenium Python

options = webdriver.ChromeOptions()
options.add_experimental_option('prefs', {'download.default_directory': [1])

Drag options to blanks, or click blank then click option'

ANone

BTrue

C'/path/to/downloads'

D8080

Attempts:

3 left

💡 Hint

Common Mistakes

Using a boolean or number instead of a string path.

Not quoting the path string.

The download.default_directory preference must be set to the path where files should be saved.

2fill in blank

medium

Complete the code to wait until the file is downloaded by checking the file existence.

Selenium Python

import os
import time
file_path = '/path/to/downloads/file.txt'
while not os.path.exists([1]):
    time.sleep(1)

Drag options to blanks, or click blank then click option'

Afile_path

B'file.txt'

Cfile

Dos.path

Attempts:

3 left

💡 Hint

Common Mistakes

Passing just the filename instead of full path.

Passing the module os.path instead of a string.

We must check the full file path variable to detect if the file exists.

3fill in blank

hard

Fix the error in the code that sets Chrome options for automatic download without prompt.

Selenium Python

options = webdriver.ChromeOptions()
options.add_experimental_option('prefs', [1])
driver = webdriver.Chrome(options=options)

Drag options to blanks, or click blank then click option'

AFalse

B['download.prompt_for_download', False]

C('download.prompt_for_download', False)

D{'download.prompt_for_download': False}

Attempts:

3 left

💡 Hint

Common Mistakes

Using a list or tuple instead of a dictionary.

Passing just a boolean instead of a dictionary.

The prefs argument must be a dictionary with keys and values, not a list or tuple.

4fill in blank

hard

Fill both blanks to create a function that waits for a file to be fully downloaded by checking file size stability.

Selenium Python

def wait_for_download(file_path):
    import os, time
    last_size = -1
    while True:
        current_size = os.path.getsize([1])
        if current_size == last_size:
            break
        last_size = current_size
        time.sleep([2])

Drag options to blanks, or click blank then click option'

Afile_path

Bfile

C1

D0.1

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable name for file path.

Using too short or missing sleep causing high CPU usage.

We check the size of the file_path and wait 1 second between checks to confirm download completion.

5fill in blank

hard

Fill all three blanks to configure Firefox profile for automatic file download of PDFs without prompt.

Selenium Python

from selenium import webdriver
profile = webdriver.FirefoxProfile()
profile.set_preference('browser.download.folderList', [1])
profile.set_preference('browser.download.dir', [2])
profile.set_preference('browser.helperApps.neverAsk.saveToDisk', [3])
driver = webdriver.Firefox(firefox_profile=profile)

Drag options to blanks, or click blank then click option'

A2

B'/path/to/downloads'

C'application/pdf'

DTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using folderList 1 or 0 which do not allow custom folder.

Not specifying the correct MIME type string.

Setting folderList to 2 means custom folder, then specify the path and MIME type for PDFs to download automatically.