代码运行后没有输出可能由多种原因导致，以下是一些常见情况及对应的解决办法： #### Python 代码方面 若使用的是 Python 代码，像之前给出的代码： ```python import psutil def get_proc_by_name(pname): procs = [] for proc in psutil.process_iter(): try: if pname.lower() in proc.name().lower(): procs.append(proc) except (psutil.AccessDenied, psutil.NoSuchProcess): pass return procs def get_procs_info(procs): procsinfo = [] with open('myresult.txt', 'w') as f: for p in procs: try: with p.oneshot(): pid = str(p.pid) name = p.name() cpu_times = str(p.cpu_times()) exe_path = p.exe() status = p.status() cwd = p.cwd() procinfo = (pid, name, cpu_times, exe_path, status, cwd) f.write(str([pid, name, cpu_times, exe_path, status, cwd]) + '\n') procsinfo.append(procinfo) except (psutil.AccessDenied, psutil.NoSuchProcess): continue return procsinfo if __name__ == "__main__": pname = "Python" procs = get_proc_by_name(pname) get_procs_info(procs) ``` - **文件路径问题**：代码把结果写入了 `myresult.txt` 文件，要保证程序有在当前目录创建和写入文件的权限，并且要查看该文件是否正确生成。 - **异常处理**：代码里有异常处理，也许在获取进程信息时产生了异常，可添加更多的日志输出，以此来排查问题。例如： ```python import psutil def get_proc_by_name(pname): procs = [] for proc in psutil.process_iter(): try: if pname.lower() in proc.name().lower(): procs.append(proc) except (psutil.AccessDenied, psutil.NoSuchProcess) as e: print(f"Error getting process: {e}") return procs def get_procs_info(procs): procsinfo = [] try: with open('myresult.txt', 'w') as f: for p in procs: try: with p.oneshot(): pid = str(p.pid) name = p.name() cpu_times = str(p.cpu_times()) exe_path = p.exe() status = p.status() cwd = p.cwd() procinfo = (pid, name, cpu_times, exe_path, status, cwd) f.write(str([pid, name, cpu_times, exe_path, status, cwd]) + '\n') procsinfo.append(procinfo) except (psutil.AccessDenied, psutil.NoSuchProcess) as e: print(f"Error getting process info: {e}") except Exception as e: print(f"Error writing to file: {e}") return procsinfo if __name__ == "__main__": pname = "Python" procs = get_proc_by_name(pname) get_procs_info(procs) ``` #### 编译器或开发环境方面 - **VSCode 问题**：新安装 Visual Studio Code 后，首次运行代码可能会出现只在终端显示结果，在输出栏无代码输出的情况。不过参考内容未提及具体解决方案 [^1]。 - **Clion 问题**：Clion 中默认输出流绑定到 `outbuf`，而非控制台，可通过 `setbuf(stdout,outbuf);` 进行设定 [^3]。 - **Jupyter Notebook 问题**：若程序自身未正确启动，不会出现 `kernel`；若之前能执行代码，突然不行了，可能是 `kernel` 出了问题，可在 `kernel` 菜单下选择重启 `kernel`，或者关闭重新打开 [^5]。