import re

match = re.search(r"可用\s*([0-9,]+(?:\.[0-9]+)?)", "可用1,024.9964 USDT")
number = ""
if match:
    # 提取匹配到的数值字符串
    number_str = match.group(1).replace(',', '')
    # 将提取的字符串转换为浮点数
    number = float(number_str)

    print(number)