File "test.py", line 9, in <module> print(c.__hour) AttributeError: 'Clock' object has no attribute '__hour' 私有属性只能通过类内的方法来访问,这就是所谓“封装”。不光是有私有属性,我们同样也可以定义私有方法,定义的方式跟私有属性相同: class Clock: def __init__(self): self.__hour...
FILE_SERVER = 'sftp://sftp_user:sftp_pwd@10.1.3.2' # TIME_SN is a string consisting of the year, month, day, hour, minute, and second. TIME_SN = '20200526120159' # device info SYSLOG_INFO = 'UDP' SPACE_CLEAR = ZTP_SPACE_CLEAR_NO_NEED ACTIVE_DELAYTIME = '60' #ACTIVE_INTIME ...
import random import string import cache def random_string(length): s = '' for i in range(length): s = s + random.choice(string.ascii_letters) return s cache.init() for n in range(1000): while True: key = random_string(20) if cache.contains(key): continue else: break value = ...
print('Anexceptionflewby!') 代码语言:txt AI代码解释 raise 输出异常信息如下: 代码语言:txt AI代码解释 Anexceptionflewby! 代码语言:txt AI代码解释 Traceback(mostrecentcalllast): 代码语言:txt AI代码解释 File"<stdin>",line2,in? 代码语言:txt AI代码解释 NameError:HiThere 如果一个异常在try子句里...
'nat' means to return a NaT (not-a-time) for an invalid day. 'forward' and 'following' mean to take the first valid day later in time. 'forward'的含义是使当前日期变为向前取第一个有效的工作日,如果在这个上面加上offsets,以改变后得日期为基础计算日期,计算第几个工作日 ...
("Hour")for hand in Second, Minute, Hour:hand.shapesize(1, 1, 3)hand.speed(0)Watch = Turtle()Watch.hideturtle()Watch.penup()def Skip(step):penup()forward(step)pendown()def Create(name, length):reset()Skip(-length * 0.1)begin_poly()forward(length * 1.1)end_poly()handForm = get...
1)Anaconda的安装这里有详细的讲解。搜索“Anconda”,进入官网下载。我的电脑上安装的是python3.7,因此下载的Anaconda版本是python3.7。 2) 双击下载好的 Anaconda3-5.3.0-Windows-x86_64.exe 文件进行安装。需要注意的是,来到 “Advanced Options 时”,勾选“Register Anaconda as my default python 3.7”,最后点...
str.count(sub) 返回字串sub在str中出现的次数 “an apple a day”.count(“a”) 结果为 4 str.replace(old,new) 返回字符串str副本,所有old字串被替换为new “python”.replace(“n”,“”) 结果为 “pytho” str.center(width [,fillchar] ) 字符串str根据宽度width居中,fillchar可选 “python”.cen...
In total there were 38 episodes, of which all but one lasted half an hour. Almost all episodes ended with a variation of the title of the series spoken as the answer to a question posed by the same character, Jim Hacker. Several episodes were adapted for BBC Radio, and a stage play ...
time.gmtime(time.time())#time.struct_time(tm_year=2016, tm_mon=10, tm_mday=26, tm_hour=8, tm_min=45, tm_sec=8, tm_wday=2, tm_yday=300, tm_isdst=0)#format_time to struct_time time.strptime('2011-05-05 16:37:06','%Y-%m-%d %X')#time.struct_time(tm_year=2011, tm_...