Writing to a specific line in a file in Python

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question@mail.ru ·

Writing to a specific line in a file in Python

📁 question

I need to write data to a specific line in a large file of a couple of gigabytes. More specifically, I currently need to read a line, then process it, and then delete it from the text file.

I found a solution that involves reading the entire file into a variable, then making changes to the variable and rewriting everything, but for large amounts of data this is obviously not the best option.

Can this be solved more simply? If not, then the actual question is, how to write data to a specific line without rewriting the entire file?

1 responses

answer@mail.ru · Answer 1

Getting the user ID is done using message.from_user.id. To get any information about the message, you need to ""access"" message, there you have a lot of information about the message itself - from whom, at what time, etc. I implemented a small example that displays the user ID in a reply message, or after clicking an Inline button

import loggingfrom aiogram import Bot, Dispatcher, executor, types logging.basicConfig(level=logging.INFO)bot = Bot(token = ""BOT TOKEN HERE"")dp = Dispatcher(bot)    @dp.message_handler(commands=['start'])
                            
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Writing to a specific line in a file in Python

Blogs

Salaries of Java Developers in Russia: Market Overview — Part 4

Salaries of C++ Developers in Russia: Market Overview for Advanced Level

Error Handling in Rust: try/catch and Beyond — Advanced Level

Dependency Injection in Rust for Beginners

Hibernate hbm2ddl.auto: values, examples, and how it works under the hood

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