poetry_plugin_export_programmatic_requirements_txt_generation.py

1import sys
2from poetry.console.application import Application
3from cleo.io.inputs.string_input import StringInput
4from cleo.io.outputs.stream_output import StreamOutput
5
6def quickstart_export():
7    """
8    Programmatically executes 'poetry export' using the Poetry application instance.
9    This requires poetry and poetry-plugin-export to be installed in the environment.
10    """
11    # Initialize the Poetry CLI Application
12    application = Application()
13    
14    # Define the command and arguments
15    # Equivalent to: poetry export -f requirements.txt --output requirements.txt
16    command_input = StringInput("export -f requirements.txt --output requirements.txt")
17    
18    # Capture output (optional)
19    output = StreamOutput(sys.stdout)
20
21    # Run the command
22    return application.run(command_input, output)
23
24if __name__ == "__main__":
25    # Ensure you are in a directory with a valid pyproject.toml
26    try:
27        quickstart_export()
28        print("\nSuccessfully exported dependencies to requirements.txt")
29    except Exception as e:
30        print(f"Error during export: {e}")