我试图让机器人从 700 行的实际 txt 文件中发送 10 行文本

Question

我正在使用 Discord.py 编写一个不和谐的机器人，但我不知道如何使其工作。

@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()将一行分成单词，计算单词数，然后使用text = ' '.join(words)将单词重新连接成单个字符串。

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单词：

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 个单词并发送它们：

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，如果文件中少于 n 行，则发送更少的行

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随机发送 n 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

您可以像这样使用enumerate并打破循环：

@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

其他答案是有效的，但如果您希望代码更简单且只有一行，您可以使用：

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单词。