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"""
Sample some conversations from a file.
Usage: python3 -m fastchat.data.sample --in sharegpt.json --out sampled.json
"""
import argparse
import json
import numpy as np
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--in-file", type=str, required=True)
parser.add_argument("--out-file", type=str, default="sampled.json")
parser.add_argument("--begin", type=int, default=0)
parser.add_argument("--end", type=int, default=100)
parser.add_argument("--max-length", type=int, default=1024)
parser.add_argument("--keep-order", action="store_true")
args = parser.parse_args()
content = json.load(open(args.in_file, "r"))
if not args.keep_order:
np.random.seed(42)
np.random.shuffle(content)
new_content = []
for i in range(args.begin, min(args.end, len(content))):
sample = content[i]
concat = ""
for s in sample["conversations"]:
concat += s["value"]
if len(concat) > args.max_length:
continue
new_content.append(sample)
print(f"#in: {len(content)}, #out: {len(new_content)}")
json.dump(new_content, open(args.out_file, "w"), indent=2, ensure_ascii=False)
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