char-fork/llama.cpp

git clone https://git.t4t.associates/char-fork/llama.cpp

MoonRide303scripts: corrected encoding when getting chat template (#11866) (#11907)5137da7b8

char/aliceai-t5-moe
brancheschar/aliceai-t5-moeall refs →
2.8 KiB76 linesraw
1#!/usr/bin/env python
2'''
3  Fetches the Jinja chat template of a HuggingFace model.
4  If a model has multiple chat templates, you can specify the variant name.
5
6  Syntax:
7    ./scripts/get_chat_template.py model_id [variant]
8
9  Examples:
10    ./scripts/get_chat_template.py CohereForAI/c4ai-command-r-plus tool_use
11    ./scripts/get_chat_template.py microsoft/Phi-3.5-mini-instruct
12'''
13
14import json
15import re
16import sys
17
18
19def get_chat_template(model_id, variant=None):
20    try:
21        # Use huggingface_hub library if available.
22        # Allows access to gated models if the user has access and ran `huggingface-cli login`.
23        from huggingface_hub import hf_hub_download
24        with open(hf_hub_download(repo_id=model_id, filename="tokenizer_config.json"), encoding="utf-8") as f:
25            config_str = f.read()
26    except ImportError:
27        import requests
28        assert re.match(r"^[\w.-]+/[\w.-]+$", model_id), f"Invalid model ID: {model_id}"
29        response = requests.get(f"https://huggingface.co/{model_id}/resolve/main/tokenizer_config.json")
30        if response.status_code == 401:
31            raise Exception('Access to this model is gated, please request access, authenticate with `huggingface-cli login` and make sure to run `pip install huggingface_hub`')
32        response.raise_for_status()
33        config_str = response.text
34
35    try:
36        config = json.loads(config_str)
37    except json.JSONDecodeError:
38        # Fix https://huggingface.co/NousResearch/Meta-Llama-3-8B-Instruct/blob/main/tokenizer_config.json
39        # (Remove extra '}' near the end of the file)
40        config = json.loads(re.sub(r'\}([\n\s]*\}[\n\s]*\],[\n\s]*"clean_up_tokenization_spaces")', r'\1', config_str))
41
42    chat_template = config['chat_template']
43    if isinstance(chat_template, str):
44        return chat_template
45    else:
46        variants = {
47            ct['name']: ct['template']
48            for ct in chat_template
49        }
50
51        def format_variants():
52            return ', '.join(f'"{v}"' for v in variants.keys())
53
54        if variant is None:
55            if 'default' not in variants:
56                raise Exception(f'Please specify a chat template variant (one of {format_variants()})')
57            variant = 'default'
58            sys.stderr.write(f'Note: picked "default" chat template variant (out of {format_variants()})\n')
59        elif variant not in variants:
60            raise Exception(f"Variant {variant} not found in chat template (found {format_variants()})")
61
62        return variants[variant]
63
64
65def main(args):
66    if len(args) < 1:
67        raise ValueError("Please provide a model ID and an optional variant name")
68    model_id = args[0]
69    variant = None if len(args) < 2 else args[1]
70
71    template = get_chat_template(model_id, variant)
72    sys.stdout.write(template)
73
74
75if __name__ == '__main__':
76    main(sys.argv[1:])