How can I make one python file run another on Aws

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I want to run multiple python scripts to run one after another These are connected, what is the best way to do it ( want to use Ec2 Instance)

2 Answers
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here are several ways to run multiple Python scripts in sequence on an EC2 instance. Here are a few options:

Use a shell script: You can create a shell script that calls each Python script in sequence using the python command, and then run that shell script on the EC2 instance. For example, you could create a script called run_scripts.sh with the following contents:

#!/bin/bash
python script1.py
python script2.py
python script3.py

Then, you can run this script on your EC2 instance by giving it execute permission (chmod +x run_scripts.sh) and running it (./run_scripts.sh).

Use a Python script to run the other scripts: You can create a Python script that calls the other Python scripts in sequence using the subprocess module. For example, you could create a script called run_scripts.py with the following contents:

import subprocess

subprocess.run(['python', 'script1.py'])
subprocess.run(['python', 'script2.py'])
subprocess.run(['python', 'script3.py'])

Then, you can run this script on your EC2 instance by running python run_scripts.py.

Use a task scheduler: You can use a task scheduler like cron to schedule the execution of each Python script at a specific time. For example, you could create a cron job that runs each script in sequence at midnight every day. To create a cron job, you can run the command crontab -e on your EC2 instance, and then add a line like the following:

0 0 * * * python /path/to/script1.py && python /path/to/script2.py && python /path/to/script3.py

This will run each script in sequence at midnight every day.

These are just a few examples of how you can run multiple Python scripts in sequence on an EC2 instance. The best approach for your use case will depend on your specific requirements and constraints.

Please let me know if that helped

AWS
EXPERT
ZJon
answered a year ago
  • But if we have dependencies like pytorch. How will we install those and if a model that is also in s3 bucket with weights, how we call it in Ec2 instance?

    1. Install dependencies using pip: pip install torch

    2. Install and configure AWS CLI: pip install awscli aws configure

    3. Copy model and weights from S3: aws s3 cp s3://your-bucket/path/to/model.pth /local/directory/

    4. Load the model in your Python script: import torch

    model = YourModelClass() model.load_state_dict(torch.load('/local/directory/model.pth'))

    1. This installs dependencies, sets up AWS CLI, and loads the model from S3 in your Python script on the EC2 instance.
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Here's an example Python script that accomplishes this:

import subprocess

# List of Python scripts to execute in order
scripts = ["script1.py", "script2.py", "script3.py"]

# Loop through the list and execute each script
for script in scripts:
    subprocess.run(["python", script])

This script uses the subprocess module to execute each Python script in order. The subprocess.run() function runs a command in a subprocess and waits for it to complete. In this case, the command is the Python interpreter with the name of the script as an argument.

profile pictureAWS
answered a year ago

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