我正在尝试使机器人从700行的实际txt文件发送10行文本

Question

我正在用Discord.py编写一个discord机器人，但我不知道如何使它工作。

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
        for line in jeff_file:
            await ctx.send(line)

该文件包含700个单词，但我希望它发送5个或10个单词。有人可以帮助我吗？

Answer 1

您可以使用words = line.split()将行划分为单词，对单词进行计数，然后使用text = ' '.join(words)将单词重新组合为单个字符串。

将行拆分为单词以发送前n个单词

以下代码将发送文件的前n个字：

n = 5

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
        words = []
        while len(words) < n:
            line = next(jeff_file)      # will raise exception StopIteration if fewer than n words in file
            words.append(line.split())
        await ctx.send(' '.join(words[:n]))

将行拆分为单词以发送n个随机单词

以下代码将从文件中读取所有单词，然后随机选择n个单词并将其发送：

import random

n = 5

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
        words = [w for line in jeff_file for w in line.split()]
        n_random_words = random.sample(words, n)   # raises exception ValueError if fewer than n words in file
        # n_random_words = random.choices(words, k=n)  # doesn't raise an exception, but can choose the same word more than once if you're unlucky
        await ctx.send(' '.join(n_random_words))

发送前n行

以下代码将从文件中读取并发送前n行：

n = 5

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
        for _ in range(n):
            line = next(jeff_file)  # will raise exception StopIteration if fewer than n lines in file
            await ctx.send(line)

发送前n行，如果文件少于n行，则发送较少的行

n = 5

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
        try:
            for _ in range(n):
                line = next(jeff_file)
                await ctx.send(line)
        except StopIteration:
            pass

发送n条随机线

以下代码将读取整个文件并发送n条随机行：

import random

n = 5

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
        all_lines = [line for line in jeff_file]
        n_lines = random.sample(all_lines, n)  # will raise exception ValueError if fewer than n words in file
        # n_lines = random.choices(all_lines, k = n)  # doesn't raise an exception, but might choose the same line more than once
        await ctx.send(line)

Answer 2

您也许可以使用enumerate并像这样打破循环：

@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    with open('Available.txt', 'r') as jeff_file:
         jeff_lines = jeff_file.readlines()
         for i, line in enumerate(jeff_lines):
                if i == 5:
                    break
                else:
                    await ctx.send(line)

Answer 3

其他答案是可行的，但是如果您希望代码更简单，一行代码，则可以使用：

n = 5
@client.command(alisases = ['readfile'])
@commands.check(is_it_me)
async def jeff(ctx):
    await ctx.send(' '.join(open('Available.txt', 'r').read().split(' ')[:n]))

这将发送文档中的前n个单词。