os.dup2(tee.stdin.fileno(), sys.stdout.fileno()) os.dup2(tee.stdin.fileno(), sys.stderr.fileno()) # The flush flag is needed to guarantee these lines are written before # the two spawned /bin/ls processes emit any output print("\nstdout", flush=True) print("stderr", file=sys....
Python通过重写sys.stdout将控制台日志重定向到文件 classLogger(object):def__init__(self,fileN ="Default.log"): self.terminal = sys.stdout self.log =open(fileN,"a")defwrite(self,message): self.terminal.write(message) self.log.write(message)defflush(self):passsys.stdout = Logger("D:\\1...
Python通过重写sys.stdout将控制台日志重定向到文件 classLogger(object): def__init__(self,fileN="Default.log"): self.terminal=sys.stdout self.log=open(fileN,"a") defwrite(self,message): self.terminal.write(message) self.log.write(message) defflush(self): pass sys.stdout=Log...
sys.stdout=self.__console__printself.buffdefto_file(self, file_path): f=open(file_path,'w') sys.stdout=fprintself.buff f.close()defflush(self): self.buff=''defreset(self): sys.stdout=self.__console__if__name__=="__main__":#redirection r_obj=__redirection__() sys.stdout=r_...
print("123", file=open("text1.log", "w")) 1. text1.log文件已经写入123 2.sys.stdout重定向 sys.stdout是python中的标准输出流,默认是映射到控制台的,即将信息打印到控制台。 在python中调用print时,默认情况下,实际上是调用了sys.stdout.write(obj+"\n") ...
def to_console(self): #输出到控制台 sys.stdout=self.__console__ print(self.buff) def to_file(self, file_path): #log输出到指定文件保存 f=open(file_path,'w') sys.stdout=f print(self.buff) f.close() def flush(self): self.buff='' def reset(self): sys.stdout=self.__console__...
问在Python3中,将sys.stdout重定向到无缓冲的文件EN首先上下比较发现,js中escape后的字符串与Unicode...
sys.stdout.write('This is my second line ')# for inserting new linesys.stdout.write("n") sys.stdout.write('In new line ')# writing string values to file.txtprint('Hello','World',2+3, file=open('file.txt','w')) 输出:
def configure_logging(): log_format = '%(asctime)s - %(name)s - %(levelname)s - %(message)s' # log to stdout logging.basicConfig(level=logging.DEBUG, format=log_format) # also log to file formatter = logging.Formatter(log_format) handler = logging.FileHandler("cmdr.log") handler...
第一步,通过 temp = sys.stdout暂时保存原始的sys.stdout对象。第二步,执行 sys.stdout = f,这使得print函数输出至文件"test.txt"。最后一步,通过 sys.stdout = temp将输出恢复至终端,完成系统的输出流切换。对于初学者来说,理解这个过程可能稍显复杂。尝试实际运行代码,结合注释和执行结果,将...