英文:
I don't understand why this is a "syntax error"?
问题
我试图创建一个消息列表，这些消息将被随机选择。我一直在收到语法错误，我正在努力找出我漏掉了什么？
我已经查看了代码，但看不到任何问题，但我觉得有些我不知道的东西，我尝试了在线检查器，但它们只会显示错误而不告诉我错误是什么...
messageRnd = ['倒计时！' + str(days_left) + '天', '天哪！还有' + str(dayt_left) + '天要到了！！', '只是个提醒，还有' + str(days_left) + '天要到了！', '还剩下' + str(days_left) + '天！', 'T-' + str(days_left) + ' 起飞。', '你知道吗，还有' + str(days_left) + '天才起飞？']
英文:
I am trying to make a list of messages that will be randomly chosen from. I keep getting syntax error, I'm trying to figure out what I've missed?
I have looked over the code and can't see anything, but I feel like there's something I don't know about, I tried online checkers, but they just say errror and don't show me what the error is ...
messageRnd = ['Countdown time!'(days_left)'','OMG! '(dayt_left)'days to go!!', 'Just a reminder, there are'(days_left)' days to go!', ' '(days_left)'days left!', 'T-'(days_left)' to takeoff.', 'did you know there are '(days_left) 'days until we takeoff?']
答案1
得分: 1
from random import randintwhile True:days_left = str(randint(0, 100))messageRnd = [f'Countdown time! {days_left}',f'OMG! {days_left} days to go!!',f'Just a reminder, there are {days_left} days to go!',f'{days_left} days left!',f'T-{days_left} to takeoff.',f'Did you know there are {days_left} days until we take off?']print(messageRnd[randint(0, len(messageRnd) - 1)])
英文:
from random import randintwhile True:days_left = str(randint(0,100))messageRnd = ['Countdown time! ' + (days_left),'OMG! ' + (days_left) + ' days to go!!','Just a reminder, there are ' + (days_left) + ' days to go!',(days_left) + ' days left!','T-' + (days_left) + ' to takeoff.','Did you know there are ' + (days_left) + ' days until we takeoff?']print(messageRnd[randint(0,len(messageRnd) - 1)].replace("days_left", days_left))
You cannot just put the variable name in, you need a , or + to concatenate. Here you need to use + as the variable would be treated as a separate entry in the list instead.
You would be far better off using an f string if you want to include many variables in a string as it is easier to type and read.
This allows you to have a more readable list, at the cost of having to redefine it if days_left changes:
from random import randintwhile True:days_left = str(randint(0,100))messageRnd = [f'Countdown time! {days_left}',f'OMG! {days_left} days to go!!',f'Just a reminder, there are {days_left} days to go!',f'{days_left} days left!',f'T-{days_left} to takeoff.',f'Did you know there are {days_left} days until we take off?']print(messageRnd[randint(0,len(messageRnd) - 1)])
As Cmd858 said in the comments, you could also do the following to avoid having to redefine the list while having the readability advantage:
from random import randintmessageRnd = ['Countdown time! days_left','OMG! days_left days to go!!','Just a reminder, there are days_left days to go!','days_left days left!','T-days_left to takeoff.','Did you know there are days_left days until we take off?']while True:days_left = str(randint(0,100))print(messageRnd[randint(0,len(messageRnd) - 1)].replace("days_left", days_left))
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