實例1
# 使用OS模塊system方法執行shell命令echo把變量a保存到當前目錄a11.md
a = "sakd\n sakdjla ;lfj adf\n ldafka;dfl jakfhkjergh\n adfjal;dfj;lsadfj f\n ladfkjajsdfioudffmewfjk;sdajf\n adl;fk;a'dfks ;adfk;alfk\n ;ad'fkwejdasjflkajfdl;\n adl;fmka;'dfklkfsjljfwf\n\n"
os.system('echo "{}" >> a11.md'.format(a))