problems with tex_to_dvi in tex_mobject.py

Hi all, run extract_scene.py -p curves.py in python jupyter notebook. I got always following error which I don’t manage to solve. Traceback (most recent call last): File "C:\Users\Koen\manim\extract_scene.py", line 200, in main handle_scene(SceneClass(**scene_kwargs), **config) File "C:\Users\Koen\manim\scene\scene.py", line 48, in __init__ self.construct(*self.construct_args) File ".\curves.py", line 126, in construct anim = SlideWordDownCycloid("Brachistochrone") File ".\curves.py", line 67, in __init__ word_mob = TextMobject(list(word)) File "C:\Users\Koen\manim\mobject\tex_mobject.py", line 54, in __init__ self.template_tex_file File "C:\Users\Koen\manim\mobject\tex_mobject.py", line 255, in tex_to_svg_file dvi_file = tex_to_dvi(tex_file) File "C:\Users\Koen\manim\mobject\tex_mobject.py", line 297, in tex_to_dvi "See log output above or the log file: %s" % log_file) Exception: Latex error converting to dvi. See log output above or the log file: C:\Users\Koen\manim\files\Tex\-91855429.log Does anyone know how to deal with this error?

many thanks from a bit frustrated person

[nickredsox]

I had to change the commands = […] in mobject/tex_mobject.py

def tex_to_dvi(tex_file):
    result = tex_file.replace(".tex", ".dvi")
    if not os.path.exists(result):
        commands = [
            "latex", 
            "-interaction=batchmode", 
            "-halt-on-error",
            "-output-directory=" + TEX_DIR,
            tex_file,
        ]
        exit_code = os.system(" ".join(commands))
        if exit_code != 0:
            latex_output = ''
            log_file = tex_file.replace(".tex", ".log")
            if os.path.exists(log_file):
                with open(log_file, 'r') as f:
                    latex_output = f.read()
            if latex_output:
                sys.stderr.write(latex_output)
            raise Exception(
                "Latex error converting to dvi. "
                "See log output above or the log file: %s" % log_file)
    return result

def dvi_to_svg(dvi_file, regen_if_exists = False):
    """
    Converts a dvi, which potentially has multiple slides, into a 
    directory full of enumerated pngs corresponding with these slides.
    Returns a list of PIL Image objects for these images sorted as they
    where in the dvi
    """
    result = dvi_file.replace(".dvi", ".svg")
    if not os.path.exists(result):
        commands = [
            "dvisvgm",
            dvi_file,
            "-n",
            "-v",
            "0",
            "-o",
            result,
        ]
        os.system(" ".join(commands))
    return result

[sometimescasey]

Two cents - ran into this today, I recommend looking at the log file as this indicates an error or missing font/package in LaTeX, not a problem with manim. Look for an error like this in the log file:

! LaTeX Error: File `dsfont.sty' not found.

Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)

Enter file name: 
! Emergency stop.

In my case I had two missing tex packages to install: physics and doublestroke. I followed the install instructions here.