nohup uv run main.py & Then you should be able to close your SSH session.

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No, if your VPS reboots, you'll lose your tmux session. But if you use systemd, that'll take care of starting it again on boot.

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Or just use nohup.

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i though if i run the command:
uv run main.py
in the terminal of the vps then even my laptop's or termux's termianl app got closed but the python process should to run in the vps, so the port should to open and this should to response to outer request over https.

But i found randomly sometime after a break the python app which was runnign just stop anyhow, i checked others things and got confirmed that my vps never got reboot in the meantim, but still the uv run main.py got stopped, is this because could be my vps is low configuration?

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I have a basic Flask example repo that I copied to a VPS. In the repo, my Python main.py code looks like this:

if __name__ == "__main__":
    app = create_app()
    app.run(
        host=settings.app.host,
        port=settings.app.port,
        debug=settings.app.debug,
    )

On the VPS terminal, I navigate to my directory and run:
uv run main.py

As a result, the app starts running on a port (e.g., 9999), and I can access the website from other devices via ip_addr:9999.

However, even though the VPS provider's dashboard shows my system has been running for over 10 hours, the app stops working after a short time (10 minutes, 1 hour, etc.). I noticed that other processes are still running, but this specific port closes automatically. I then have to go back to the VPS and run main.py again.

Is this expected behavior in reality? How can I keep my Python app running on this same port without it stopping? or i am missing something here 🐍🚀

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By the way, my English is not good, so I use Google Translate, which may have problems with phrasing and such.

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I think he is copy pasting answers from Ai. but I'm not sure

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yeah, telegram go brr.
also, there's the case for yield and map() here, but feels out of scope lol

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what a shitty fix ngl

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The Answer:
The correct output is **B: [4, 4, 4, 4, 4]*Why? (The "Late Binding" Trap)p)**
In Python, closures look up the variable name in the outer scwhen the function is calleded**, not when it’s defined. By the time you call the functions in the list, the loop has already finished, and the variable i is left at its final value: 4. All your function objects are referencing the same i.

**The Professional Fix:**
To capture the value at the time of definition, you need to "freeze" it. The standard way to do this is by default argumentgument**:

def create_multipliers():
    multipliers = []
    for i in range(5):
        # By setting i=i, we capture the current value 
        # of i as a local variable for this function instance.
        def multiplier(x, i=i): 
            return x * i
        multipliers.append(multiplier)
    return multipliers

Now, each function maintains its own snapshot of i, and the output will be the expected [0, 1, 2, 3, 4].

*This is a classic "gotcha" in Python. Understanding scope is what separates a beginner from a production-ready engineer.*

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pls help me to get the python]

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Python Quiz: The "Late Binding" Trap 🐍

Let’s test your understanding of Python closures and scoping. What is the output of the following code snippet?

def create_multipliers():
    multipliers = []
    for i in range(5):
        def multiplier(x):
            return x * i
        multipliers.append(multiplier)
    return multipliers

funcs = create_multipliers()
print([f(1) for f in funcs])

Options:
A) [0, 1, 2, 3, 4]
B) [4, 4, 4, 4, 4]
C) [0, 0, 0, 0, 0]

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Check out @PythonRes, a channel for Python resources - video courses, pdf books, tutorials and other info to help you learn Python.

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how do you jump from python basics to cyber security?

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this is a python chat, not a cyber security chat, go to @pythonofftopic

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i checked nohup > & like this, i think maybe my cpu is 1 vCpu that' why it kills my python process there

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i never listen this concept,but what is the background of this topic, is this like even my vos got reboot this tmux will help to run all python thing?

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Well, my first guess is that the process is killed with the SSH connection. If you want exactly this command to keep running, you need to use tmux on the VPS, not on the client (laptop). And the way you'd actually do it in production is with systemd services.

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Could have have anything to do with the SSH connection being disconnected?

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This group is to help you on specific issues you have on YOUR code, so you have to show the code you wrote and explain where and why you are stuck... as simple as that

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Yes, I will try to post spring content from now on. But I don't think it matters where we copy and paste from, as long as we learn something. This post was like this, otherwise I will try to find the best programming tips and skills and post them here.

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Your copy and paste doesn't look so good.

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depending on context i would go with either of these, default argument binding just seems like a confusing hack to me tbh

import functools

def multiplier(x, i):
  return x*y

def create_multipliers():
  return [functools.partial(multiplier, i=i) for i in range(5)]

or

def create_multipliers():
  def make_multiplier(i):
      def multiplier(x):
          return x * i
      return multiplier
  return [make_multiplier(i) for i in range(5)]

intent is far more obvious with these

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❗️ Message from ‎Jafar Salimi [532744334] was reported to the admins.​​​​​​​​​​​​​​​

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cuz it's capturing i by reference, not by value

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I am the beginner and I want to learn python

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If u seriously wanna learn Python, my 2 cent is to go this path:
1- Read Python Crash Course book && Do ALL the practices & coding there (mocking, changing some segments, re-doing the practices on ur own)
2- Read Effective Python (125 specific ways ...) not the old version (90 specific ways ...) & apply ur learning about best practices onto what u've done in Python Crash Course.

Avoid getting lost in thousands of articles out there.

Once u learn everything in those 2 books, u're way better than lots of Python devs in writing correct & idiomatic Python.

But if u're not genuinely interested & just wanna look cool, we're in post-llm era. Easy to look like magicians by a couple of prompts. So, don't waste ur time.

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Can I get a beginner guide on python

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Oh I wanted to know the basics in python rather

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Hello can anyone help me on cyber security
Am a beginner

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