如何根据特定字符的位置读取 txt 文件

Question

我有一个代码可以读取文件并从该文件中随机选择一行并将其作为不和谐机器人通过 DM 发送。但是，我希望它读取 txt 文件的某个部分，该部分以哪个字符开始和结束。前任：，你好 ,

这是我正在使用的代码，它读取随机行并通过 DM 发送它：

emailFile = open("C:/Users/jacob/Downloads/Spotify_premiums.txt", "r")
emails = []
for email in emailFile:
    emails.append(email)

@bot.command(pass_context = True)
@commands.cooldown(1, 30, commands.BucketType.user)
@commands.has_any_role("| Premium |")
async def spotifypremium(ctx):
    msg = emails
    await bot.send_message(ctx.message.author, random.choice(msg))
    await bot.send_message(ctx.message.channel, "Alt Has Been Seen To Your DMs")
    await bot.purge_from(ctx.message.channel, limit=2)
    await bot.send_message(ctx.message.author, "Please Wait 30 Seconds Before Using This Command Again. If you do not wait the full time then you won't be sent an alt.")

这是我的修订版：

    emailFile = open("C:/Users/jacob/Downloads/Uplay_Formatted.txt", "r", 
    encoding="utf16").read()
    parse = False
    email = []
    for com in emailFile.split('\n'):
        if com.startswith(',Credentials'):
            parse = True
        elif com.startswith(',Credentials'):
            parse = False
        if parse:
            email.append(com)


    @bot.command(pass_context = True)
    @commands.cooldown(1, 30, commands.BucketType.user)
    @commands.has_any_role("| Premium |")
    async def spotifypremium(ctx):
            msg = email
            await bot.send_message(ctx.message.author, random.choice(msg))
            await bot.send_message(ctx.message.channel, "Alt Has Been Seen 
    To Your DMs")
            await bot.purge_from(ctx.message.channel, limit=2)
            await bot.send_message(ctx.message.author, "Please Wait 30 
    Seconds Before Using This Command Again. If you do not wait the full 
    time then you won't be sent an alt.")

Answer 1

尝试使用正则表达式 https://docs.python.org/2/library/re.html

您可以匹配以单词 'Hi' re.match('^Hi', line)

开头的行

^ 表示行的开头，还有一些其他特殊字符可能会有所帮助。

Answer 2

您还可以使用 startswith() 和 endswith() 示例 here

比如你的情况；应该是这样的：

emailFile = open("C:/Users/jacob/Downloads/Spotify_premiums.txt", "r")
read_emails = emailFile.read()
emails = [com for com in read_emails.split() if com.startswith(',') and com.endswith(',')]

根据您的要求在开始和结束之间显示内容。试试这个：

emailFile = open("C:/Users/jacob/Downloads/Spotify_premiums.txt", "r", encoding="utf8").read()
parse = False
for com in emailFile.split('\n'):
    if com.startswith(',Credentials'):
        parse = True
    elif com.startswith(',Credentials'):
        parse = False
    if parse:
        #do stuff

如果您只是想从文本文件中获取电子邮件地址。

import re

emailFile = open("C:/Users/jacob/Downloads/Spotify_premiums.txt", "r", encoding="utf8").read()
email = []
for com in emailFile.split():
    if re.match(r'[\w\.-]+@[\w\.-]+',  com):
        email.append(com)

如何根据特定字符的位置读取 txt 文件

How to Read a txt File Based On Where a Specific character is

python

discord