vk image saver

import re
import sys
import os
import urllib.request

# Delay before exit
def wait_and_exit():
    wait = input("PRESS ENTER TO EXIT")
    exit()

# Download single picture
def download_pic(url, dir_name, num):
    # regex
    urllib.request.urlretrieve(url, "{0}/{1}.jpg".format(dir_name, num))

# Find unique directory name recursively
def original_dir(dir_name, num = 0):
    temp_name = dir_name if num == 0 else "{0}{1}".format(dir_name, num)

    if not os.path.exists(temp_name):
        os.makedirs(temp_name)
        return temp_name
    return original_dir(dir_name, num + 1)

# Start:

# Enter file path by hand
if (len(sys.argv) < 2):
    print(' - Tip: You can drop *.html file on me\n')
    file_path = input('Enter path to *.html file: ')
# Read html file
else:
    file_path = sys.argv[1]
# It can take a while
print("Working...")

# Open & read file
file_in = open(file_path, 'r')
f_content = file_in.read()

if (f_content == ""):
    print('Can\'t read from file\n')
    file_in.close()
    wait_and_exit()
file_in.close()

# Create regex pattern and find links
result = re.findall('https://\S+\.jpg', f_content)

if (result == []):
    print('No links found in ' + file_path.split('\\')[-1])
    wait_and_exit()

# Download found photos into auto-named folder
dir_name = original_dir(sys.argv[0].split('.')[0])
i = 1

for r in result:
    download_pic(r, dir_name, i)
    i = i + 1

print("Done. Check folder \"" + dir_name.split('\\')[-1] + "\"")
wait_and_exit()