update examples to py3

This commit is contained in:
John Cupitt 2020-11-09 11:00:29 +00:00
parent 3cd880260f
commit 5afa726b8c

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@ -18,7 +18,7 @@ in the API. It's also a useful source of examples.
# Average a region of interest box on an image
``` python
#!/usr/bin/env python
#!/usr/bin/python3
import sys
import pyvips
@ -30,7 +30,7 @@ height = 64
image = pyvips.Image.new_from_file(sys.argv[1])
roi = image.crop(left, top, width, height)
print 'average:', roi.avg()
print('average:', roi.avg())
```
# libvips and numpy
@ -40,7 +40,7 @@ an area of memory. The memory array needs to be laid out band-interleaved,
as a set of scanlines, with no padding between lines.
```python
#!/usr/bin/env python
#!/usr/bin/python3
import sys
import time
@ -50,7 +50,7 @@ from PIL import Image
import numpy as np
if len(sys.argv) != 3:
print('usage: {0} input-filename output-filename'.format(sys.argv[0]))
print(f'usage: {sys.argv[0]} input-filename output-filename')
sys.exit(-1)
# map vips formats to np dtypes
@ -153,7 +153,7 @@ images, you'd need to do some more work to convert them all into the same
colourspace before inserting them.
``` python
#!/usr/bin/env python
#!/usr/bin/python3
#file try255.py
import sys