一段代碼阻礙了我在學校的 Discord 機器人 (One piece of code hindering my Discord bot for School)

問題描述

一段代碼阻礙了我在學校的 Discord 機器人 (One piece of code hindering my Discord bot for School)

我需要下面這行代碼來檢查用戶發送的整個數字的消息，而不是特定的數字（這是 5 的佔位符）

  def check(m):
    return m.content == '5' and m.channel == channel

幫助讚賞:)

參考解法

方法 1:

If you're expecting whole numbers, use str.isdecimal():

Return True if all characters in the string are decimal characters and there is at least one character, False otherwise. Decimal characters are those that can be used to form numbers in base 10,

</blockquote>

So your code would become:

def check(m):
    return m.content.isdecimal() and m.channel == channel

str.isdecimal() works like:

>>> '5'.isdecimal()
True
>>> '123'.isdecimal()
True
>>> '0'.isdecimal()  # zero is okay
True
>>> '‑123'.isdecimal()  # doesn't work for negative integers
False
>>> '3.76'.isdecimal()  # doesn't work for floats
False
>>> ''.isdecimal()  # doesn't work for empty strings
False

方法 2:

If you want to check whether a string contains a number, use the isdigit() method (returns a boolean).

string = '1234'
print (string.isdigit())

(by Keigen Sheppard、aneroid、TheChicken4452)

參考文件

1. One piece of code hindering my Discord bot for School (CC BY‑SA 2.5/3.0/4.0)