''' Downloads models from Hugging Face to models/model-name. Example: python download-model.py facebook/opt-1.3b ''' import argparse import base64 import json import multiprocessing import re import sys from pathlib import Path import requests import tqdm def get_file(args): url = args[0] output_folder = args[1] idx = args[2] tot = args[3] print(f"Downloading file {idx} of {tot}...") r = requests.get(url, stream=True) with open(output_folder / Path(url.split('/')[-1]), 'wb') as f: total_size = int(r.headers.get('content-length', 0)) block_size = 1024 t = tqdm.tqdm(total=total_size, unit='iB', unit_scale=True) for data in r.iter_content(block_size): t.update(len(data)) f.write(data) t.close() def sanitize_branch_name(branch_name): pattern = re.compile(r"^[a-zA-Z0-9._-]+$") if pattern.match(branch_name): return branch_name else: raise ValueError("Invalid branch name. Only alphanumeric characters, period, underscore and dash are allowed.") def select_model_from_default_options(): models = { "Pygmalion 6B original": ("PygmalionAI", "pygmalion-6b", "b8344bb4eb76a437797ad3b19420a13922aaabe1"), "Pygmalion 6B main": ("PygmalionAI", "pygmalion-6b", "main"), "Pygmalion 6B dev": ("PygmalionAI", "pygmalion-6b", "dev"), "Pygmalion 2.7B": ("PygmalionAI", "pygmalion-2.7b", "main"), "Pygmalion 1.3B": ("PygmalionAI", "pygmalion-1.3b", "main"), "Pygmalion 350m": ("PygmalionAI", "pygmalion-350m", "main"), "OPT 6.7b": ("facebook", "opt-6.7b", "main"), "OPT 2.7b": ("facebook", "opt-2.7b", "main"), "OPT 1.3b": ("facebook", "opt-1.3b", "main"), "OPT 350m": ("facebook", "opt-350m", "main"), } choices = {} print("Select the model that you want to download:\n") for i,name in enumerate(models): char = chr(ord('A')+i) choices[char] = name print(f"{char}) {name}") char = chr(ord('A')+len(models)) print(f"{char}) None of the above") print() print("Input> ", end='') choice = input()[0].strip().upper() if choice == char: print("""\nThen type the name of your desired Hugging Face model in the format organization/name. Examples: PygmalionAI/pygmalion-6b facebook/opt-1.3b """) print("Input> ", end='') model = input() branch = "main" else: arr = models[choices[choice]] model = f"{arr[0]}/{arr[1]}" branch = arr[2] return model, branch def get_download_links_from_huggingface(model, branch): base = "https://huggingface.co" page = f"/api/models/{model}/tree/{branch}?cursor=" cursor = b"" links = [] classifications = [] has_pytorch = False has_pt = False has_safetensors = False is_lora = False while True: content = requests.get(f"{base}{page}{cursor.decode()}").content dict = json.loads(content) if len(dict) == 0: break for i in range(len(dict)): fname = dict[i]['path'] if not is_lora and fname.endswith(('adapter_config.json', 'adapter_model.bin')): is_lora = True is_pytorch = re.match("(pytorch|adapter)_model.*\.bin", fname) is_safetensors = re.match(".*\.safetensors", fname) is_pt = re.match(".*\.pt", fname) is_tokenizer = re.match("tokenizer.*\.model", fname) is_text = re.match(".*\.(txt|json|py|md)", fname) or is_tokenizer if any((is_pytorch, is_safetensors, is_pt, is_tokenizer, is_text)): if is_text: links.append(f"https://huggingface.co/{model}/resolve/{branch}/{fname}") classifications.append('text') continue if not args.text_only: links.append(f"https://huggingface.co/{model}/resolve/{branch}/{fname}") if is_safetensors: has_safetensors = True classifications.append('safetensors') elif is_pytorch: has_pytorch = True classifications.append('pytorch') elif is_pt: has_pt = True classifications.append('pt') cursor = base64.b64encode(f'{{"file_name":"{dict[-1]["path"]}"}}'.encode()) + b':50' cursor = base64.b64encode(cursor) cursor = cursor.replace(b'=', b'%3D') # If both pytorch and safetensors are available, download safetensors only if (has_pytorch or has_pt) and has_safetensors: for i in range(len(classifications)-1, -1, -1): if classifications[i] in ['pytorch', 'pt']: links.pop(i) return links, is_lora def download_files(file_list, output_folder, num_processes=8): with multiprocessing.Pool(processes=num_processes) as pool: args = [(url, output_folder, idx+1, len(file_list)) for idx, url in enumerate(file_list)] for _ in tqdm.tqdm(pool.imap_unordered(get_file, args), total=len(args)): pass pool.close() pool.join() if __name__ == '__main__': parser = argparse.ArgumentParser() parser.add_argument('MODEL', type=str, default=None, nargs='?') parser.add_argument('--branch', type=str, default='main', help='Name of the Git branch to download from.') parser.add_argument('--threads', type=int, default=1, help='Number of files to download simultaneously.') parser.add_argument('--text-only', action='store_true', help='Only download text files (txt/json).') args = parser.parse_args() model = args.MODEL branch = args.branch if model is None: model, branch = select_model_from_default_options() else: if model[-1] == '/': model = model[:-1] branch = args.branch if branch is None: branch = "main" else: try: branch = sanitize_branch_name(branch) except ValueError as err_branch: print(f"Error: {err_branch}") sys.exit() links, is_lora = get_download_links_from_huggingface(model, branch) base_folder = 'models' if not is_lora else 'loras' if branch != 'main': output_folder = Path(base_folder) / (model.split('/')[-1] + f'_{branch}') else: output_folder = Path(base_folder) / model.split('/')[-1] if not output_folder.exists(): output_folder.mkdir() # Downloading the files print(f"Downloading the model to {output_folder}") download_files(links, output_folder, num_processes=args.threads)