Random.choice 给出了相同的答案

Question

I'm new and wanted to make a reddit bot with random.choice but if I write the same phrase twice in the same comment it gives the same answer

phrase = 'summon_bot'

import random
  char1 = ["character1", "character2", "character3"]

  if phrase in comment.body
     reply = comment.body.replace(phrase,str(random.choice(char1)))

and when a comment is for example :"summon_bot and summon_bot are the best characters" it gives the same answer for both phrases

Answer 1

I think, that's what you're trying to do.

import random

phrase = "summon_bot"
char1 = ["character1", "character2", "character3"]

reply = comment.body
while phrase in reply:
    reply = reply.replace(phrase, str(random.choice(char1)), 1)

Answer 2

read your code as:

phrase = 'summon_bot'

import random
  char1 = ["character1", "character2", "character3"]

  if phrase in comment.body:
     random_choice = random.choice(char1)
     #random_choice is now a stored variable. Fixed, is the same each time you use it
     reply = comment.body.replace(phrase,str(random_choice)) #replaces all occurences of phrase with fixed random_choice

You need a way to evaluate random.choice(char1) for each occurence. Eg:

reply = comment.body
while phrase in reply:
     random_choice = random.choice(char1)
     reply.replace(phrase, random_choice, 1) #extra argument to only replace first occurence

Answer 3

查看replace()的文档，它替换它找到的所有事件，而不仅仅是第一个。