def download_url(url, dir_name='.', save_name=None, store_directory=None, messages=True, suffix=''):
    """Download a file from a url and save it to disk."""
    if sys.version_info>=(3,0):
        from urllib.parse import quote
        from urllib.request import urlopen 
        from urllib.error import HTTPError, URLError
    else:
        from urllib2 import quote
        from urllib2 import urlopen
        from urllib2 import URLError as HTTPError
    i = url.rfind('/')
    file = url[i+1:]
    if store_directory is not None:
        dir_name = os.path.join(dir_name, store_directory)
    if save_name is None:
        save_name = file
    save_name = os.path.join(dir_name, save_name)
    print("Downloading ", url, "->", save_name)
    if not os.path.exists(dir_name):
        os.makedirs(dir_name)
    try:
        response = urlopen(url+suffix)
    except HTTPError as e:
        if not hasattr(e, "code"):
            raise
        if e.code > 399 and e.code<500:
            raise ValueError('Tried url ' + url + suffix + ' and received client error ' + str(e.code))
        elif e.code > 499:
            raise ValueError('Tried url ' + url + suffix + ' and received server error ' + str(e.code))
    except URLError as e:
        raise ValueError('Tried url ' + url + suffix + ' and failed with error ' + str(e.reason))
    with open(save_name, 'wb') as f:
        meta = response.info()
        content_length_str = meta.get("Content-Length")
        if content_length_str:
            #if sys.version_info>=(3,0):
            try:
                file_size = int(content_length_str)
            except:
                try: 
                    file_size = int(content_length_str[0])
                except:
                    file_size = None
            if file_size == 1:
                file_size = None
            #else:
            #    file_size = int(content_length_str)
        else:
            file_size = None
        
        status = ""
        file_size_dl = 0
        block_sz = 8192
        line_length = 30
        percentage = 1./line_length
        
        if file_size:
            print("|"+"{:^{ll}}".format("Downloading {:7.3f}MB".format(file_size/(1048576.)), ll=line_length)+"|")
            from itertools import cycle
            cycle_str = cycle('>')
            sys.stdout.write("|")
                    
        while True:
            buff = response.read(block_sz)
            if not buff:
                break
            file_size_dl += len(buff)
            f.write(buff)
            
            # If content_length_str was incorrect, we can end up with many too many equals signs, catches this edge case
            #correct_meta = float(file_size_dl)/file_size <= 1.0
            
            if file_size:
                if (float(file_size_dl)/file_size) >= percentage:
                    sys.stdout.write(next(cycle_str))
                    sys.stdout.flush()
                    percentage += 1./line_length
                #percentage = "="*int(line_length*float(file_size_dl)/file_size)
                #status = r"[{perc: <{ll}}] {dl:7.3f}/{full:.3f}MB".format(dl=file_size_dl/(1048576.), full=file_size/(1048576.), ll=line_length, perc=percentage)
            else:
                sys.stdout.write(" "*(len(status)) + "\r")
                status = r"{dl:7.3f}MB".format(dl=file_size_dl/(1048576.),
                                                                       ll=line_length,
                                                                       perc="."*int(line_length*float(file_size_dl/(10*1048576.))))
                sys.stdout.write(status)
                sys.stdout.flush()

            #sys.stdout.write(status)
        
        if file_size:
            sys.stdout.write("|")
            sys.stdout.flush()

        print(status)