import os
import urllib2
import urllib

def url_exists(URL):
    try:
        request = urllib2.Request(URL)
        urllib2.urlopen(request)
        return True
    except Exception:
        raise urllib2.URLError("ERROR: failed to connect to the URL: " + URL)

def download_from_url(url, local_folder):
    # strip leading or trailing whitespaces or '/' from inputs url and local_folder
    url = url.strip().strip('/')
    local_folder = local_folder.strip()
    # Get the name of the file to be downloaded
    i = url.rindex('/')
    installer = url[i+1:]
    # Get the path of the file on the local machine by appending filename to the path local_folder
    local_path = os.path.join(local_folder, installer)
    # Create local_folder if it doesn't exist already
    if not os.path.exists(local_folder):
        print 'Directory doesn\'t exist. Creating: ' + local_folder
        os.makedirs(local_folder)
    # If the file 'local_path' does not exist, Download the file from the url
    if not os.path.exists(local_path):
        print 'File doesn\'t exist. Downloading: ' + url
        if url_exists(url):
            # Get only filename from urlretrieve tuple (filename, headers) 
            filename = urllib.urlretrieve(url, local_path)[0]
            return filename
    else:
        return local_path

def main():
    url1 = ''
    url2 = ''
    tmpDir = os.getcwd()
    #download file 1
    try:
        file1_path = download_from_url(url1, local_folder=tmpDir)
    except Exception as e:
        print e
        exit(-1)
    #download file 2
    try:
        file2_path = download_from_url(url2, local_folder=tmpDir)
    except Exception as e:
        print e
        exit(-1)

        return

if __name__ == "__main__":
    main()