对网工来说,取模运算符里大致有%s, %d, %f这三种常用的格式码(format code),其他格式码的还有诸如%o、%E之类的,但网工用到的机会不多。看它们的首字母就能知道它们分别对应的是string(字符串), decimal(十进制整数)以及floating number(浮点数)。 举例如下: 这里前面两个%d按照顺序分别对应取模运算符%后面...
%[(name)][flags][width].[precision] typecode (1)(name)为命名:即参数的名称,可以没有这个,怎么使用呢?注意(name需要使用括号括起来哦!!!) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # 注意:这里的name,num括号不能掉'Hey %(name)s, there is a %(num)f number!'%{"name":name,"num...
格式化 datetime 对象 支持的格式详见官方文档: https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes 代码语言:javascript 代码运行次数:0 运行 AI代码解释 importdatetime now=datetime.datetime.now()print(f'{now:%Y-%m-%d %H:%M:%S}')#2021-01-1916:44:32 字符串前补零 ...
format_spec ::= (literal_char | NULL | replacement_field)* literal_char ::= <any code point except "{", "}" or NULL> 这是从上面的模板字符串演化来的,但是有个两个区别: {}里第一个字段不是format中传过入的参数,而是一个上下文中的变量,或者是一个表达式。 {}不能为空,而format格式化中空{...
datetime.fromtimestamp(timestamp[, tz]):根据时间戮创建一个datetime对象,参数tz指定时区信息; datetime.utcfromtimestamp(timestamp):根据时间戮创建一个datetime对象; datetime.combine(date, time):根据date和time,创建一个datetime对象; datetime.strptime(date_string, format):将格式字符串转换为datetime对象; ...
datetimeformat_string="%Y-%m-%d%H:%M:%S"datetime_obj=datetime.strptime(date_string,format_string)...
importdatetimeimportcalendar# 获取当前日期和时间now=datetime.datetime.now()# 获取月份的整数表示month=now.month# 将月份的整数表示转换成英文表示month_name=calendar.month_name[month]print(f"The current month is{month_name}.") 1. 2. 3.
3.2 datetime importdatetimeprint(datetime.datetime.today())#获取当前时间,精确到秒print(datetime.date.today())#精确到天res= datetime.date.today() + datetime.timedelta(days=-5)#获取5天前的时间res1= datetime.datetime.today() + datetime.timedelta(minutes=5)#获取5分钟后#weeks,days,minutes,seconds...
Learn all about the Python datetime module in this step-by-step guide, which covers string-to-datetime conversion, code samples, and common errors. Updated Dec 3, 2024 · 8 min read Contents Introduction to the Python datetime Module Convert a String to a datetime Object in Python Using date...
The above code will populate the datetime_object variable with an object referencing the date and time right now. If we print datetime_object, you should see something similar to this:2018-03-11 13:12:03.572480 To format this datetime, we need to use masks, just liked we used in the sec...