Cannot install omni library in python

doganibrahim.2001 · October 20, 2024, 6:10pm

vs code python interpreter : AppData/Local/ov/pkg/isaac-sim-4.2.0/kit/python/python.exe
When I run the code I get this error: ModuleNotFoundError: No module named ‘omni’.
Later, when I look at the modules in the python in Isaac sim from the command line, omni is not visible. How can I fix this? Because it seems that omni, which should come with the installation of Isaac sim, did not come.

toni.nv · October 21, 2024, 3:49pm

Hi @doganibrahim.2001

What code are you trying to run?

doganibrahim.2001 · October 21, 2024, 4:02pm

from omni.isaac.python_app import OmniKitHelper # error this line
import numpy as np
from PIL import Image
import random
import time


# Isaac Sim'i başlatmak için yardımcı sınıf
kit = OmniKitHelper()
kit.initialize()

# Kameraların yollarını tanımla
camera_paths = [
    '/World/Camera',
    '/World/Camera_01',
    '/World/Camera_02',
    '/World/Camera_03'
]

# Farklı simülasyon senaryoları için kaç tekrar yapılacak
num_scenarios = 5

# Çöplerin pozisyonlarını rastgele ayarlamak için fonksiyon
def randomize_trash_positions(trash_objects):
    stage = omni.usd.get_context().get_stage()
    for trash in trash_objects:
        obj_prim = stage.GetPrimAtPath(trash)
        random_pos = [random.uniform(-5, 5), random.uniform(-5, 5), 0]  # Zemin üzerinde rastgele yerleştir
        obj_prim.GetAttribute("xformOp:translate").Set(random_pos)

# Kamera açılarını rastgele ayarlamak için fonksiyon
def randomize_camera_angle(camera_path):
    stage = omni.usd.get_context().get_stage()
    camera_prim = stage.GetPrimAtPath(camera_path)
    random_rotation = [random.uniform(-45, 45), random.uniform(-45, 45), random.uniform(0, 360)]  # Kameraya rastgele açı ver
    camera_prim.GetAttribute("xformOp:rotateXYZ").Set(random_rotation)


trash_paths = [
    '/World/Trash_1',
    '/World/Trash_2',
    '/World/Trash_3'
]


for scenario in range(num_scenarios):
    print(f"Senaryo {scenario + 1}: Başlatılıyor...")

    # Çöplerin pozisyonlarını rastgele ayarla
    randomize_trash_positions(trash_paths)


    for i, camera_path in enumerate(camera_paths):
        # Kameranın açısını rastgele ayarla
        randomize_camera_angle(camera_path)

        # Kamerayı al
        camera = kit.get_camera(camera_path)

        # Kameradan görüntüyü yakala
        image_data = camera.get_image()
        np_image = np.array(image_data)  # Görüntüyü numpy array'e çevir

        # Görüntüyü kaydet
        img = Image.fromarray(np_image)  # Numpy array'den image objesi oluştur
        img.save(f'scenario_{scenario + 1}_camera_{i + 1}.png')  # Görüntüyü bir PNG dosyası olarak kaydet

        print(f"Senaryo {scenario + 1}, Kamera {i + 1}: Görüntü alındı ve kaydedildi.")

    
    time.sleep(2)


kit.shutdown()

toni.nv · October 21, 2024, 4:06pm

Hi @doganibrahim.2001

I see, please, for standalone workflow use SimulationApp instead

from isaacsim import SimulationApp

simulation_app = SimulationApp({"headless": False})
### Perform any omniverse imports here after the helper loads ###

doganibrahim.2001 · October 21, 2024, 4:09pm

from isaacsim import SimulationApp

simulation_app = SimulationApp({“headless”: False})

Perform any omniverse imports here after the helper loads ### Where do I write this code?

toni.nv · October 21, 2024, 4:11pm

Hi @doganibrahim.2001

Place it at the beginning of your code

doganibrahim.2001:

from omni.isaac.python_app import OmniKitHelper # error this line
import numpy as np
from PIL import Image
import random
import time


# Isaac Sim'i başlatmak için yardımcı sınıf
kit = OmniKitHelper()
kit.initialize()

from isaacsim import SimulationApp

simulation_app = SimulationApp({"headless": False})

import numpy as np
from PIL import Image
import random
import time

doganibrahim.2001 · October 21, 2024, 4:15pm

I got the same error. Could this error be due to the libomp140.x86_64.dll that I transferred to system32? Because I saw an article saying it is not suitable for vs code. in case if you dont want to download visual studio. The text is as follows: https://www.dllme.com/dll/files/libomp140_x86_64?sort=upload&arch=0x8664 you can just download this dll and place it in windows/system32 directory. it works as well too

toni.nv · October 21, 2024, 4:20pm

Hi @doganibrahim.2001

After using SimulationApp what is the error?
Could you please share code and terminal output?

doganibrahim.2001 · October 21, 2024, 4:21pm

Could not find platform independent libraries
Traceback (most recent call last):
File “c:\Users\dogan\Desktop\ap\import omni.py”, line 1, in
from isaacsim import SimulationApp
ModuleNotFoundError: No module named ‘isaacsim’

toni.nv · October 21, 2024, 4:21pm

Hi @doganibrahim.2001

How are you executing the code?
Please, share command

doganibrahim.2001 · October 21, 2024, 4:26pm

I did not use the command line. I am running the code directly in vscode. I got this output from powershell. I am using the virtual environment in Isaac sim as the Python interpreter. appdata/…/kit/python/python.exe.

toni.nv · October 21, 2024, 4:27pm

Hi @doganibrahim.2001

Please, try running it in a terminal, not from VS Code directly
Btw, use AppData/Local/ov/pkg/isaac-sim-4.2.0/python.bat and not ...kit/python/python.exe since the .bat script performs some environment settings

See Python Environment — Omniverse IsaacSim latest documentation

doganibrahim.2001 · October 21, 2024, 4:35pm

Python 3.10.14 (main, Apr 12 2024, 14:18:47) [MSC v.1912 64 bit (AMD64)] on win32
Type “help”, “copyright”, “credits” or “license” for more information.

from isaacsim import SimulationApp
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘isaacsim’

simulation_app = SimulationApp({“headless”: False})
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘SimulationApp’ is not defined
from omni.isaac.python_app import OmniKitHelper
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘omni’
import numpy as np
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘numpy’
from PIL import Image
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘PIL’
import random
import time

Isaac Sim’i başlatmak için yardımcı sınıf

kit = OmniKitHelper()
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘OmniKitHelper’ is not defined
kit.initialize()
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘kit’ is not defined

Kameraların yollarını tanımla

camera_paths = [
… ‘/World/Camera’,
… ‘/World/Camera_01’,
… ‘/World/Camera_02’,
… ‘/World/Camera_03’
… ]

Farklı simülasyon senaryoları için kaç tekrar yapılacak

num_scenarios = 5

Çöplerin pozisyonlarını rastgele ayarlamak için fonksiyon

def randomize_trash_positions(trash_objects):
… stage = omni.usd.get_context().get_stage()
… for trash in trash_objects:
… obj_prim = stage.GetPrimAtPath(trash)
… random_pos = [random.uniform(-5, 5), random.uniform(-5, 5), 0] # Zemin üzerinde rastgele yerleştir
… obj_prim.GetAttribute(“xformOp:translate”).Set(random_pos)
…

Kamera açılarını rastgele ayarlamak için fonksiyon

def randomize_camera_angle(camera_path):
… stage = omni.usd.get_context().get_stage()
… camera_prim = stage.GetPrimAtPath(camera_path)
… random_rotation = [random.uniform(-45, 45), random.uniform(-45, 45), random.uniform(0, 360)] # Kameraya rastgele açı ver
… camera_prim.GetAttribute(“xformOp:rotateXYZ”).Set(random_rotation)
…
trash_paths = [
… ‘/World/Trash_1’,
… ‘/World/Trash_2’,
… ‘/World/Trash_3’
… ]

for scenario in range(num_scenarios):
… print(f"Senaryo {scenario + 1}: Başlatılıyor…")
…
Senaryo 1: Başlatılıyor…
Senaryo 2: Başlatılıyor…
Senaryo 3: Başlatılıyor…
Senaryo 4: Başlatılıyor…
Senaryo 5: Başlatılıyor…
# Çöplerin pozisyonlarını rastgele ayarla
randomize_trash_positions(trash_paths)
File “”, line 1
randomize_trash_positions(trash_paths)
IndentationError: unexpected indent
for i, camera_path in enumerate(camera_paths):

File “”, line 1
for i, camera_path in enumerate(camera_paths):
IndentationError: unexpected indent

    # Kameranın açısını rastgele ayarla
    randomize_camera_angle(camera_path)

File “”, line 1
randomize_camera_angle(camera_path)
IndentationError: unexpected indent

    # Kamerayı al
    camera = kit.get_camera(camera_path)

File “”, line 1
camera = kit.get_camera(camera_path)
IndentationError: unexpected indent

    # Kameradan görüntüyü yakala
    image_data = camera.get_image()

File “”, line 1
image_data = camera.get_image()
IndentationError: unexpected indent

    np_image = np.array(image_data)  # Görüntüyü numpy array'e çevir

File “”, line 1
np_image = np.array(image_data) # Görüntüyü numpy array’e çevir
IndentationError: unexpected indent

    # Görüntüyü kaydet
    img = Image.fromarray(np_image)  # Numpy array'den image objesi oluştur

File “”, line 1
img = Image.fromarray(np_image) # Numpy array’den image objesi oluştur
IndentationError: unexpected indent

    img.save(f'scenario_{scenario + 1}_camera_{i + 1}.png')  # Görüntüyü bir PNG dosyası olarak kaydet

File “”, line 1
img.save(f’scenario_{scenario + 1}camera{i + 1}.png’) # Görüntüyü bir PNG dosyası olarak kaydet
IndentationError: unexpected indent

    print(f"Senaryo {scenario + 1}, Kamera {i + 1}: Görüntü alındı ve kaydedildi.")

File “”, line 1
print(f"Senaryo {scenario + 1}, Kamera {i + 1}: Görüntü alındı ve kaydedildi.")
IndentationError: unexpected indent

time.sleep(2)

File “”, line 1
time.sleep(2)
IndentationError: unexpected indent

kit.shutdown()
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘kit’ is not defined

toni.nv · October 21, 2024, 4:38pm

Hi @doganibrahim.2001

Have you followed my edited respone:

doganibrahim.2001 · October 21, 2024, 4:47pm

When I did what you said, Isaac opened the sim directly but I get the same error. I wonder if I got the same error because I didn’t give the path of the simulation I made. Because I saved a file and actually wrote this code to that file.

toni.nv · October 21, 2024, 4:49pm

Hi @doganibrahim.2001

Please (for this and the next possible responses), share command, errors, and any other useful information apart from the problem description

doganibrahim.2001 · October 21, 2024, 4:53pm

When I run the code in python.bat, I get the following errors: [10.953s] app ready
[12.957s] Simulation App Startup Complete

from omni.isaac.python_app import OmniKitHelper
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘omni.isaac.python_app’
import numpy as np
from PIL import Image
import random
import time

Helper class to initialize Isaac Sim

kit = OmniKitHelper()
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘OmniKitHelper’ is not defined
kit.initialize()
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘kit’ is not defined

Define camera paths

camera_paths = [
… ‘/World/Camera’,
… ‘/World/Camera_01’,
… ‘/World/Camera_02’,
… ‘/World/Camera_03’
… ]

How many iterations will be done for different simulation scenarios

num_scenarios = 5

Function to randomize trash positions

def randomize_trash_positions(trash_objects):
… stage = omni.usd.get_context().get_stage()
… for trash in trash_objects:
… obj_prim = stage.GetPrimAtPath(trash)
… random_pos = [random.uniform(-5, 5), random.uniform(-5, 5), 0] # Place randomly on the ground
… obj_prim.GetAttribute(“xformOp:translate”).Set(random_pos)
…

Function to set random camera angles

def randomize_camera_angle(camera_path):
… stage = omni.usd.get_context().get_stage()
… camera_prim = stage.GetPrimAtPath(camera_path)
… random_rotation = [random.uniform(-45, 45), random.uniform(-45, 45), random.uniform(0, 360)] # Set random angle to camera
… camera_prim.GetAttribute(“xformOp:rotateXYZ”).Set(random_rotation)
…
trash_paths = [
… ‘/World/Trash_1’,
… ‘/World/Trash_2’,
… ‘/World/Trash_3’
… ]

for scenario in range(num_scenarios):
… print(f"Scenario {scenario + 1}: Starting…")
…
Scenario 1: Starting…
Scenario 2: Starting…
Scenario 3: Starting…
Scenario 4: Starting…
Scenario 5: Starting…

Randomize trash positions

randomize_trash_positions(trash_paths)
File “”, line 1
randomize_trash_positions(trash_paths)
IndentationError: unexpected indent

for i, camera_path in enumerate(camera_paths):
File “”, line 1
for i, camera_path in enumerate(camera_paths):
IndentationError: unexpected indent

Randomize the camera angle

randomize_camera_angle(camera_path)
File “”, line 1
randomize_camera_angle(camera_path)
IndentationError: unexpected indent

Get the camera

camera = kit.get_camera(camera_path)
File “”, line 1
camera = kit.get_camera(camera_path)
IndentationError: unexpected indent

Capture the image from the camera

image_data = camera.get_image()
File “”, line 1
image_data = camera.get_image()
IndentationError: unexpected indent
np_image = np.array(image_data) # Convert the image to numpy array
File “”, line 1
np_image = np.array(image_data) # Convert image to numpy array
IndentationError: unexpected indent

Save image

img = Image.fromarray(np_image) # Create image object from numpy array
File “”, line 1
img = Image.fromarray(np_image) # Create image object from numpy array
IndentationError: unexpected indent
img.save(f’scenario_{scenario + 1}camera{i + 1}.png’) # Save image as a PNG file
File “”, line 1
img.save(f’scenario_{scenario + 1}camera{i + 1}.png’) # Save image as a PNG file save
IndentationError: unexpected indent

print(f"Scenario {scenario + 1}, Camera {i + 1}: Image captured and saved.“)
File “”, line 1
print(f"Scenario {scenario + 1}, Camera {i + 1}: Image captured and saved.”)
IndentationError: unexpected indent

time.sleep(2)
File “”, line 1
time.sleep(2)
IndentationError: unexpected indent

kit.shutdown()
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘kit’ is not defined

toni.nv · October 21, 2024, 5:05pm

Hi @doganibrahim.2001

Fresh restart!

To run Isaac Sim standalone workflow, save the code you are writing to a script first (e.g.: my_script.py)
and run it (in a terminal) using PATH_TO_APPDATA/Local/ov/pkg/isaac-sim-4.2.0/python.bat my_script.py

Note: Don’t use/import OmniKitHelper, instead use SimulationApp by putting it at the very beginning of your script

my_script.py

from isaacsim import SimulationApp
simulation_app = SimulationApp({"headless": False})

# all your code after this point

Please refer to Isaac Sim standalone examples script for “examples” (PATH_TO_APPDATA/Local/ov/pkg/isaac-sim-4.2.0/standalone_examples folder)

doganibrahim.2001 · October 21, 2024, 5:23pm

I did what you said, python isaac sim opened, then after typing the following in cmd it closed immediately: File “C:\Users\dogan\Desktop\ap\myproject1.py”, line 15, in
kit = OmniKitHelper()
NameError: name ‘OmniKitHelper’ is not defined
2024-10-21 17:21:51 [12,794ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,794ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,794ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,794ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,794ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,795ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,795ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,795ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,795ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,795ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,796ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,796ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Annotators’ for removal
2024-10-21 17:21:51 [12,796ms] [Warning] [omni.graph.core.plugin] Could not find category ‘Replicator:Core’ for removal
2024-10-21 17:21:51 [12,875ms] [Warning] [carb] Recursive unloadAllPlugins() detected!

toni.nv · October 21, 2024, 5:25pm

Hi @doganibrahim.2001

As I commented before, please remove any use of OmniKitHelper from code

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Cannot install omni library in python

Perform any omniverse imports here after the helper loads ### Where do I write this code?

Isaac Sim’i başlatmak için yardımcı sınıf

Kameraların yollarını tanımla

Farklı simülasyon senaryoları için kaç tekrar yapılacak

Çöplerin pozisyonlarını rastgele ayarlamak için fonksiyon

Kamera açılarını rastgele ayarlamak için fonksiyon

Helper class to initialize Isaac Sim

Define camera paths

How many iterations will be done for different simulation scenarios

Function to randomize trash positions

Function to set random camera angles

Randomize trash positions

Randomize the camera angle

Get the camera

Capture the image from the camera

Save image

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