whisperx diarization no module named 'julius'

I am trying to get this python file to run which takes an mp3 file and converts it to text with unique speaker ID's:

import whisperx
import gc

device ="cuda"
batch_size = 32
compute_type = "float16"
audio_file = "MEGA64 PODCAST 483.mp3"
audio = whisperx.load_audio(audio_file)
model = whisperx.load_model("large-v2", device, compute_type=compute_type)
result = model.transcribe(audio, batch_size=batch_size)
print(result["segments"])

model_a, metadata = whisperx.load_align_model(language_code=result["language"], device=device)
result = whisperx.align(result["segments"], model_a, metadata, audio, device, return_char_alignments=False)

# https://huggingface.co/settings/tokens
# new read token
HUGGING_FACE_TOKEN="xxxx"
diarize_model = whisperx.DiarizationPipeline(use_auth_token=HUGGING_FACE_TOKEN, device=device)
diarize_segments = diarize_model(audio, min_speakers=2, max_speakers=2)
print(diarize_segments)
print(diarize_segments.speaker.unique())
result = whisperx.assign_word_speakers(diarize_segments, result)
print(diarize_segments)
print(result["segments"]) # segments area now assigned speaker IDs

I am using a python3 virtual env, so when I activate it, and try to run my above script with python ex.py I get this error output:

(venv_name) C:\Users\martin\Documents\projects\diarisation\Test2>python ex.py            
C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\pyannote\audio\core\io.py:43: UserWarning: torchaudio._backend.set_audio_backend has been deprecated. With dispatcher enabled, this function is no-op. You can remove the function call.
  torchaudio.set_audio_backend("soundfile")
Traceback (most recent call last):
  File "C:\Users\martin\Documents\projects\diarisation\Test2\ex.py", line 1, in <module>
    import whisperx
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\whisperx\__init__.py", line 1, in <module>
    from .transcribe import load_model
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\whisperx\transcribe.py", line 10, in <module>
    from .asr import load_model
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\whisperx\asr.py", line 13, in <module>
    from .vad import load_vad_model, merge_chunks
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\whisperx\vad.py", line 9, in <module>
    from pyannote.audio import Model
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\pyannote\audio\__init__.py", line 29, in <module>
    from .core.inference import Inference
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\pyannote\audio\core\inference.py", line 37, in <module>
    from pyannote.audio.core.model import Model, Specifications
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\pyannote\audio\core\model.py", line 47, in <module>
    from pyannote.audio.core.task import (
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\pyannote\audio\core\task.py", line 40, in <module>
    from torch_audiomentations import Identity
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\torch_audiomentations\__init__.py", line 2, in <module>
    from .augmentations.band_pass_filter import BandPassFilter
  File "C:\Users\martin\Documents\projects\diarisation\venv_name\Lib\site-packages\torch_audiomentations\augmentations\band_pass_filter.py", line 1, in <module>
    import julius
ModuleNotFoundError: No module named 'julius'

(venv_name) C:\Users\martin\Documents\projects\diarisation\Test2>

After seeing the error No module named 'julius' I try to install it with pip install julius, and confirm it's installed with pip freeze > requirements.txt which shows julius==0.2.7, but running the script again results in the same exact error with no change, as if julius is still not installed.

How do I fix this julius error to unblock my script from running?

m-bain / whisperX

whisperx diarization no module named 'julius' #732