py script that converts a txt file containing a tex per line to multiple pdf files

convert a txt file containing a tex per line to pdfs.py

import subprocess
import os

# sample of input_file:
# $\mathbf{x}\in \mathbb{R}^d$
# $x_i\in \mathbb{R}$
# $D=\{\mathbf{x}^{(1)},\mathbf{x}^{(2)},\ldots, \mathbf{x}^{(N)}\}$
# ...

# consts
input_file = 'inlines_e.txt'
fontsize = '12pt'
engine = 'pdflatex'
delete_aux = True
delete_log = True
delete_tex = True

# additional macros if needed
input_preamble = '\\input{macros.tex} \n' if os.path.isfile('macros.tex') else ''

# from LaTeX2InD (https://gomezrj.github.io/projects.html)
tex_preamble = "\\documentclass[varwidth=true,border={1pt 1pt 1pt 2pt}]{standalone} \n\\usepackage{amsmath,amssymb,amsfonts} \n\\usepackage[fontsize="+fontsize+"]{fontsize} \n" +input_preamble+ "\\pagestyle{empty} \n \\begin{document} \n"
tex_closing = "\n \\end{document}"

# Open and read the lines from the text file and ...
number = 0
with open(input_file, 'r') as file:
    for tex_command in file:
        if tex_command.strip():
            number = number + 1
            temp_tex_filename = str(number)+'.tex'
            if not(os.path.isfile(temp_tex_filename)):
              with open(temp_tex_filename, 'w') as temp_file:
                  temp_file.write(tex_preamble + tex_command + tex_closing)
            
            temp_pdf_filename = str(number)+'.pdf'
            if not(os.path.isfile(temp_pdf_filename)):
              pdflatex_command = [engine, temp_tex_filename]
              subprocess.run(pdflatex_command)
              
              if delete_tex: os.remove(temp_tex_filename)
              if delete_log: os.remove(str(number)+'.log')
              if delete_aux: os.remove(str(number)+'.aux')