在python中提取文件的两行之间的一行

def extract_line_between(file_path, start_line, end_line):
    with open(file_path, 'r') as file:
        lines = file.readlines()

    extracted_lines = []
    is_between = False

    for line in lines:
        if line.strip() == start_line:
            is_between = True
        elif line.strip() == end_line:
            is_between = False

        if is_between:
            extracted_lines.append(line)

    return extracted_lines[1]  # 返回两行之间的第二行

# 示例用法
file_path = 'file.txt'
start_line = 'Line 1'
end_line = 'Line 3'

extracted_line = extract_line_between(file_path, start_line, end_line)
print(extracted_line)