then calls the quit() function to stop the program. In the output, you can see the numbers from 1 to 2 are printed, but as soon as three comes, it stops the program by printing the‘Use quit() or Ctrl-Z plus Return to exit’ on the terminal’. ...
1.2 os._exit() vs sys.exit() vs exit() python的程序有多种退出方式:os._exit(), sys.exit(),exit()/quit()。 1.2.1 sys.exit() Help on built-in function exit in module sys:在模块sys中,可以帮助内置函数退出的。 一般是退出Python程序的首选方法。该方法中包含一个参数status,默认为0,表示...
elif"code"innext:print("OK, you have the code.")theobject="code"print("Now you must exit and go ahead.")opening()# Moved thefunctioncall before thereturnstatementreturntheobject defopening():print("You're in a Labrynthe.")print("There's a door on your left.")print("There's ...
import osimport sysimport cfgimport randomimport pygamefrom modules import * '''开始游戏'''def startGame(screen): clock = pygame.time.Clock() # 加载字体 font = pygame.font.SysFont('arial', 18) if not os.path.isfile('score'): f = open('score', 'w') f.write('0') f.close() ...
1》sys.exit() >>> import sys >>> help(sys.exit) Help on built-in function exit in module sys: exit(...) exit([status]) Exit the interpreter by raising SystemExit(status). If the status is omitted or None, it defaults to zero (i.e., success). ...
If python function default input is mutable, calling the function will change on top of. defmutable_parameter(lst=[]):iflstisNone:lst=[]lst.append(1)returnlstprint(mutable_parameter())print(mutable_parameter())[1][1]use'lst=None'instead!
1) PRINT IS A FUNCTION 在Python 3.x中,输出语句需要使用print()函数,该函数接收一个关键字参数,以此来代替Python 2.x中的大部分特殊语法。下面是几个对比项: 目标Python 2.x的实现Python 3.x的实现 拼接并输出多个值 print "The result is", 2+3 ...
/usr/bin/python#-*-coding:utf8-*-#Function:连接主机执行命令 #Usage:python conn.py #Author:Alfred Zhao #Created:2017/02/22#Version:1.01importparamiko s=paramiko.SSHClient()s.set_missing_host_key_policy(paramiko.AutoAddPolicy())s.connect(hostname='192.168.56.158',port=22,username='oracle',...
Timer(interval, function, args=[ ], kwargs={ }) interval: 指定的时间 function: 要执行的方法 args/kwargs: 方法的参数 代码示例: 代码示例: import datetime from threading import Timer def time_printer(): now = datetime.datetime.now()
1$ Python --help2usage: Python [option] ... [-c cmd | -m mod | file | -] [arg] ...3Optionsandarguments (andcorresponding environment variables):4-B : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x5-c cmd : program passedinas string (terminates option list...