读取文本文件中的某一行并显示下一行

def read_next_line(file_path, line_number):
    with open(file_path, 'r') as file:
        lines = file.readlines()
        if line_number < len(lines):
            current_line = lines[line_number].strip()
            next_line = lines[line_number + 1].strip() if line_number + 1 < len(lines) else None
            return current_line, next_line
        else:
            return None, None

# 示例用法
file_path = 'path/to/your/file.txt'
line_number = 3
current_line, next_line = read_next_line(file_path, line_number)
if current_line and next_line:
    print(f"当前行：{current_line}")
    print(f"下一行：{next_line}")
else:
    print("指定行不存在或无法获取下一行")