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Use np.random.default_rng() instead of the legacy np.random functions #90

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Merged
copybara-service merged 2 commits into from
Oct 21, 2026
Merged

Use np.random.default_rng() instead of the legacy np.random functions #90

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5e5578a
Use modern rng for random numbers
hhoppe Jul 29, 2026
8c567a8
Fix a docstring example that called np.default_rng() instead of np.ra…
hhoppe Sep 25, 2026
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20 changes: 12 additions & 8 deletions mediapy/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,17 +47,18 @@

Show titled images side-by-side:
```python
rng = np.random.default_rng(1)
images = {
'original': checkerboard,
'darkened': checkerboard * 0.7,
'random': np.random.rand(32, 32, 3),
'random': rng.random((32, 32, 3)),
}
show_images(images, vmin=0.0, vmax=1.0, border=True, height=64)
```

Compare two images using an interactive slider:
```python
compare_images([checkerboard, np.random.rand(128, 128, 3)])
compare_images([checkerboard, rng.random((128, 128, 3))])
```

## Video examples
Expand Down Expand Up @@ -86,7 +87,7 @@

Create and display a looping two-frame GIF video:
```python
image1 = resize_image(np.random.rand(10, 10, 3), (50, 50))
image1 = resize_image(np.random.default_rng(1).random((10, 10, 3)), (50, 50))
show_video([image1, image1 * 0.8], fps=2, codec='gif')
```

Expand Down Expand Up @@ -980,9 +981,10 @@ def show_image(

See `show_images`.

>>> show_image(np.random.rand(100, 100))
>>> show_image(np.random.randint(0, 256, size=(80, 80, 3), dtype='uint8'))
>>> show_image(np.random.rand(10, 10) - 0.5, cmap='bwr', height=100)
>>> rng = np.random.default_rng(1)
>>> show_image(rng.random((100, 100)))
>>> show_image(rng.integers(0, 256, size=(80, 80, 3), dtype='uint8'))
>>> show_image(rng.random((10, 10)) - 0.5, cmap='bwr', height=100)
>>> show_image(read_image('/tmp/image.png'))
>>> url = 'https://github.com/hhoppe/data/raw/main/image.png'
>>> show_image(read_image(url))
Expand Down Expand Up @@ -1020,7 +1022,8 @@ def show_images(
If a directory has been specified using `set_show_save_dir`, also saves each
titled image to a file in that directory based on its title.

>>> image1, image2 = np.random.rand(64, 64, 3), color_ramp((64, 64))
>>> image1 = np.random.default_rng(1).random((64, 64, 3))
>>> image2 = color_ramp((64, 64))
>>> show_images([image1, image2])
>>> show_images({'random image': image1, 'color ramp': image2}, height=128)
>>> show_images([image1, image2] * 5, columns=4, border=True)
Expand Down Expand Up @@ -1136,7 +1139,8 @@ def compare_images(
The slider functionality requires that the web browser have Internet access.
See additional info in `https://github.com/sneas/img-comparison-slider`.

>>> image1, image2 = np.random.rand(64, 64, 3), color_ramp((64, 64))
>>> image1 = np.random.default_rng(1).random((64, 64, 3))
>>> image2 = color_ramp((64, 64))
>>> compare_images([image1, image2])

Args:
Expand Down
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