Previewing manim output with option -n 0,0

[dan-whitman]

Description of bug / unexpected behavior

I am trying to set up macros on Sublime to automatically render and preview certain portions of my code. When I try to only preview the first animation of a scene using -pql -n 0,0, it renders all animations for the scene. Every other animation number I tried (-n 1,1; -n 2,2; etc.) worked as expected.

Expected behavior

I would expect -pql -n 0,0 to only preview the first animation of the scene.

How to reproduce the issue

Code for reproducing the problem

class SquareToCircle(Scene):
    def construct(self):
        circle = Circle()  # create a circle
        circle.set_fill(PINK, opacity=0.5)  # set the color and transparency
        
        square = Square()
        square.rotate(PI / 4)

        self.play(Create(square))
        self.play(Transform(square, circle))
        self.play(FadeOut(square))

Running with command: manim {filepath}{filename} SquareToCircle -pql --progress_bar none -n #,# in Windows command prompt.

Additional media files

Images/GIFs

Logs

Terminal output

C:\Users\danie\OneDrive\Documents\Videos\Test>manim C:\Users\danie\OneDrive\Documents\Videos\Test\scene.py SquareToCircle -pql --progress_bar none -n 0,0 -v DEBUG --format gif
Manim Community v0.18.1

[11/12/24 16:28:42] DEBUG    Hashing ...                                                                 hashing.py:352
                    DEBUG    Hashing done in 0.005330 s.                                                 hashing.py:364
                    DEBUG    Hash generated :  1185818338_1063976082_223132457                           hashing.py:367
                    INFO     Animation 0 : Using cached data (hash :                               cairo_renderer.py:88
                             1185818338_1063976082_223132457)
                    DEBUG    List of the first few animation hashes of the scene:                  cairo_renderer.py:97
                             ['1185818338_1063976082_223132457']
                    DEBUG    Hashing ...                                                                 hashing.py:352
                    DEBUG    Hashing done in 0.006418 s.                                                 hashing.py:364
                    DEBUG    Hash generated :  624642324_166878160_3256495558                            hashing.py:367
                    INFO     Animation 1 : Using cached data (hash :                               cairo_renderer.py:88
                             624642324_166878160_3256495558)
                    DEBUG    List of the first few animation hashes of the scene:                  cairo_renderer.py:97
                             ['1185818338_1063976082_223132457', '624642324_166878160_3256495558']
                    DEBUG    Hashing ...                                                                 hashing.py:352
                    DEBUG    Hashing done in 0.003641 s.                                                 hashing.py:364
                    DEBUG    Hash generated :  624642324_208288666_3256495558                            hashing.py:367
                    INFO     Animation 2 : Using cached data (hash :                               cairo_renderer.py:88
                             624642324_208288666_3256495558)
                    DEBUG    List of the first few animation hashes of the scene:                  cairo_renderer.py:97
                             ['1185818338_1063976082_223132457', '624642324_166878160_3256495558',
                             '624642324_208288666_3256495558']
                    INFO     Combining to Movie file.                                          scene_file_writer.py:617
                    DEBUG    Partial movie files to combine (3 files):                         scene_file_writer.py:561
                             ['C:\\Users\\danie\\OneDrive\\Documents\\Videos\\Test\\media\\vid
                             eos\\scene\\480p15\\partial_movie_files\\SquareToCircle\\11858183
                             38_1063976082_223132457.mp4',
                             'C:\\Users\\danie\\OneDrive\\Documents\\Videos\\Test\\media\\vide
                             os\\scene\\480p15\\partial_movie_files\\SquareToCircle\\624642324
                             _166878160_3256495558.mp4',
                             'C:\\Users\\danie\\OneDrive\\Documents\\Videos\\Test\\media\\vide
                             os\\scene\\480p15\\partial_movie_files\\SquareToCircle\\624642324
                             _208288666_3256495558.mp4']
                    INFO                                                                       scene_file_writer.py:737
                             File ready at
                             'C:\Users\danie\OneDrive\Documents\Videos\Test\media\videos\scene
                             \480p15\SquareToCircle_ManimCE_v0.18.1.gif'

                    INFO     Rendered SquareToCircle                                                       scene.py:247
                             Played 3 animations
                    INFO     Previewed File at:                                                         file_ops.py:231
                             'C:\Users\danie\OneDrive\Documents\Videos\Test\media\videos\scene\480p15\S
                             quareToCircle_ManimCE_v0.18.1.gif'

System specifications

System Details

• OS (with version, e.g., Windows 10 v2004 or macOS 10.15 (Catalina)): Windows 10 v22H2
• RAM: 16 Gb
• Python version (python/py/python3 --version): 3.12.7
• Installed modules (provide output from pip list):

asttokens         2.4.1
click             8.1.7
cloup             3.0.5
colorama          0.4.6
contourpy         1.3.0
cycler            0.12.1
decorator         5.1.1
executing         2.1.0
fonttools         4.54.1
glcontext         3.0.0
ipython           8.29.0
isosurfaces       0.1.2
jedi              0.19.2
kiwisolver        1.4.7
manim             0.18.1
ManimPango        0.6.0
mapbox_earcut     1.0.2
markdown-it-py    3.0.0
matplotlib        3.9.2
matplotlib-inline 0.1.7
mdurl             0.1.2
moderngl          5.12.0
moderngl-window   2.4.6
multipledispatch  1.0.0
networkx          3.4.2
numpy             1.26.4
packaging         24.2
parso             0.8.4
pillow            11.0.0
pip               24.3.1
prompt_toolkit    3.0.48
pure_eval         0.2.3
pycairo           1.27.0
pydub             0.25.1
pyglet            2.0.18
Pygments          2.18.0
pyparsing         3.2.0
pyrr              0.10.3
python-dateutil   2.9.0.post0
rich              13.9.4
scipy             1.14.1
screeninfo        0.8.1
six               1.16.0
skia-pathops      0.8.0.post2
srt               3.5.3
stack-data        0.6.3
svgelements       1.9.6
tqdm              4.66.6
traitlets         5.14.3
typing_extensions 4.12.2
watchdog          6.0.0
wcwidth           0.2.13

Additional comments

[behackl]

Thanks for the report! Indeed, this was a bug with how the flag was handled internally -- I've implemented a fix in #4013, should be fixed in the upcoming release. 👍

[dan-whitman]

Great! Thanks for being on top of it!