在有字符串的列表中查找数字，返回数值

import re

def extract_numbers_from_list(string_list):
    numbers = []
    for item in string_list:
        # 使用正则表达式匹配数字（包括整数和浮点数）
        matches = re.findall(r'-?\d+\.?\d*', item)
        for match in matches:
            try:
                # 将匹配到的字符串转换为浮点数
                number = float(match)
                numbers.append(number)
            except ValueError:
                # 如果转换失败，忽略该匹配项
                pass
    return numbers

# 示例列表
string_list = ["abc123", "def456.78", "ghi-987", "jkl", "mno12.34"]
numbers = extract_numbers_from_list(string_list)
print(numbers)  # 输出: [123.0, 456.78, -987.0, 12.34]