1import os2import shutil34defcleanup_and_backup(source_conn, target_conn, backup_dir):5# Close database connections6 source_conn.close()7 target_conn.close()89# Backup source database10 shutil.copytree('source_db_path', os.path.join(backup_dir, 'source_db_backup'))11 print(...
M_snooze = M_snooze +5 在07点的时候,每当 PIR 传感器被触发,或者换句话说,PIR 传感器检测到任何运动,那么它将在if条件内执行一系列活动,包括通过函数datetime.datetime.now().strftime('%M')记录时间,然后将其存储在名为M_snooze的变量中。 在下一行,我们取出存储在M_snooze中的分钟值,并再加上5分钟。因...
我们使用send()方法发送数据,如下所示: >>>c.send('Test data')>>>c.send('Some more random text')>>>c.send('Test data with Ruby somewhere in it') Oh no: I found a Ruby again! 每次调用send()方法都使代码到达下一个 yield。在我们的例子中,到达while循环的下一次迭代,返回text = (yield)...
This should give `proc` enough time to do any necessary cleanup. """ if proc.poll() is None: proc.terminate() try: proc.wait(timeout) except subprocess.TimeoutExpired: proc.kill() return parser = argparse.ArgumentParser() parser.add_argument('N', type=int) args = parser.parse_args(...
The CREATE DATABASE query is stored as a string in the create_db_query variable and then passed to cursor.execute() for execution. The code uses a context manager with the cursor object to handle the cleanup process. You might receive an error here if a database with the same name alrea...
用read_csv()方法只选取特定的列,指定uscols参数,如下: usecol_func = lambda x: 'UGDS_' in x or x == 'INSTNM' college = pd.read_csv('data/college.csv',usecols=usecol_func) 1. 2. 透视表pivot_table是一个很重要的概念,透视针对的对象是不同的列名,用法如下: ...
:data.append({'状态':'无人经过','时间':time.strftime("%Y-%m-%d %H:%M:%S")})# 添加数据print("无人经过.")time.sleep(1)exceptKeyboardInterrupt:print("程序结束")# 将数据保存为CSV文件df=pd.DataFrame(data)df.to_csv('infrared_data.csv',index=False)# 存储数据为CSVfinally:GPIO.cleanup()...
( connection_string = sql_connection_string, num_tasks =4, auto_cleanup =False)## Run linmod locally#linmod_local = rx_lin_mod("ArrDelay ~ DayOfWeek", data = data_source)## Run linmod remotely#linmod = rx_lin_mod("ArrDelay ~ DayOfWeek", data = data_source, ...
parse_args() process_data(args.input_file, args.min_value, args.max_value) if __name__ == "__main__": main() 在这个例子中,用户可以通过命令行指定输入文件、最小值和最大值来筛选并统计CSV文件中某一列的数据范围内的摘要统计信息。 5.1.2 系统管理脚本 考虑一个用于监控和重启服务的系统管理...
例如通过使用PyImport_ImportModuleEx），或者在初始化期间将其设置为None（例如通过调用PyImport_Cleanup...