ghost_writer

A simple package that allows you to build a class to parameterize scripts via code generation.

A cmdline utility is add to convert python scripts into generators which can later be modified.

Installation

pip install pyghost-writer

Usage

Say you have a simple script that you want to parameterize for code generation.

import os


for i in range(10):
    for j in range(20):
        pass

In the terminal run the scriptify_py command on the script

scriptify_py script.py

Now you will have a new file called generated_script.py which contains a class that can generate that script which can be run:

from ghost_writer import ScriptGenerator


class NewGenerator(ScriptGenerator):
    def __init__(self, file_name: str) -> None:
        super().__init__(file_name)

    def _build_script(self) -> None:
        self._add_line('import os')
        self._end_line()
        self._end_line()
        self._add_line('for i in range(10):')
        self._add_line('for j in range(20):', indent_level=1)
        self._add_line('pass', indent_level=2)

We can now modify the class to be parameterized:

from ghost_writer import ScriptGenerator


class MyGenerator(ScriptGenerator):
    def __init__(self, file_name: str, parameter: int) -> None:

        self._parameter = parameter

		super().__init__(file_name)

    def _build_script(self) -> None:
        self._add_line('import os')
        self._end_line()
        self._end_line()
        self._add_line('for i in range(10):')
        self._add_line('for j in range(20):', indent_level=1)
        self._add_line(f'print({parameter})', indent_level=2)

Now in python, we can import our class and run it:

generator = MyGenerator("new_script.py", 4)

generator.write()

And now we have a generated script called new_script.py

import os


for i in range(10):
    for j in range(20):
        print(4)

• Free software: GNU General Public License v3