如何正确使用Python .format（）？

Question

考虑以下几点：

user_ = socket.gethostname() 
runtime_ = time.ctime() 
game_days = 'season open' 
variable = 'speed' 
start_time = datetime.time(15, 0) 
weekdays = 'all days' 
period = ['1/1/2013', '1/1/2020'] 

如何使用.format()看到this。为了得到这个输出

print(tag) 

User-WS, Mon Mar 27 07:30:08 2017 US/Central - season open 
Variable: speed At: 15:00. all days 1/1/2013:1/1/2020 
-------------------------------------------------------- 

现在我做：

tag = user_ + ', ' + runtime_ + ' US/Central - ' + game_days + '\n' + 'Variable: ' + \ 
variable + ' At: ' + str(start_time)[:-3] + '. ' + weekdays + ' ' + period[0] + ':' + period[1] + '\n' + \ 
'--------------------------------------------------------' 

Answer 1

s = '{}, {}, US/Central - {}\nVariable: {}, At: {}. {} {}:{}\n--------------------------------------------------------' 

tag = s.format(user_, runtime_ game_days, variable, str(start_time)[:-3], weekdays, period[0],period[1]) 

这是你挂一个非常彻底的教程中，我不知道一些这一点。你特别努力的是什么？