Random.choice给出相同的答案

Question

我是新手，想用random.choice做一个reddit机器人，但是如果我在同一条评论中写两次相同的短语，它将给出相同的答案

phrase = 'summon_bot'

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

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

例如，当注释为“ summon_bot和summon_bot是最好的字符”时，两个短语给出相同的答案

Answer 1

我认为，这就是您想要做的。

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

将代码读取为：

eleventh_category

您需要一种方法来评估每次发生的class DmozSpiderSpider(scrapy.Spider): name = 'Dmoz' start_urls = ['http://dmoz-odp.org/'] eleventh_category = ['A','B','C'] for again in eleventh_category: save = f'http://dmoz-odp.org/Regional/{again}/' def parse(self, response): # collect data on page items = { 'Navbar': response.css('#main-nav a::text').extract(), 'Category_names': response.css('.top-cat a::text').extract(), 'Subcategories': response.css('.sub-cat a::text').extract(), # this is eleventh_category 'Eleventh_category': self.save } # save and call request to another page dct = [(self.save, self.alpha_country)] for page, callback in dct: yield response.follow(page, callback, meta={'items': items}) def find_items(self, response, names, finder): items = response.meta['items'] for name, find in zip(names.values(), finder.values()): items[name] = response.css(find).extract() yield items def alpha_country(self, response): items = response.meta['items'] names = {'name1': 'Countries'} finder = {'finder1': '.browse-node::text'} for name, find in zip(names.values(), finder.values()): items[name] = [i.strip() for i in response.css(find).extract() if i.strip()] yield items 。 例如：

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

Answer 3

查看 replace（）的文档，它将替换发现的所有内容，而不仅仅是第一个。