pybind11/example/example-callbacks.py
Jason Rhinelander b3f3d79f4c Rename examples files, as per #288
This renames example files from `exampleN` to `example-description`.

Specifically, the following renaming is applied:

example1 -> example-methods-and-attributes
example2 -> example-python-types
example3 -> example-operator-overloading
example4 -> example-constants-and-functions
example5 -> example-callbacks (*)
example6 -> example-sequence-and-iterators
example7 -> example-buffers
example8 -> example-custom-ref-counting
example9 -> example-modules
example10 -> example-numpy-vectorize
example11 -> example-arg-keywords-and-defaults
example12 -> example-virtual-functions
example13 -> example-keep-alive
example14 -> example-opaque-types
example15 -> example-pickling
example16 -> example-inheritance
example17 -> example-stl-binders
example18 -> example-eval
example19 -> example-custom-exceptions

* the inheritance parts of example5 are moved into example-inheritance
(previously example16), and the remainder is left as example-callbacks.

This commit also renames the internal variables ("Example1",
"Example2", "Example4", etc.) into non-numeric names ("ExampleMandA",
"ExamplePythonTypes", "ExampleWithEnum", etc.) to correspond to the
file renaming.

The order of tests is preserved, but this can easily be changed if
there is some more natural ordering by updating the list in
examples/CMakeLists.txt.
2016-07-18 16:43:18 -04:00

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#!/usr/bin/env python
from __future__ import print_function
from functools import partial
import sys
sys.path.append('.')
from example import Pet
from example import Dog
from example import Rabbit
from example import dog_bark
from example import pet_print
polly = Pet('Polly', 'parrot')
molly = Dog('Molly')
roger = Rabbit('Rabbit')
print(roger.name() + " is a " + roger.species())
pet_print(roger)
print(polly.name() + " is a " + polly.species())
pet_print(polly)
print(molly.name() + " is a " + molly.species())
pet_print(molly)
dog_bark(molly)
try:
dog_bark(polly)
except Exception as e:
print('The following error is expected: ' + str(e))
from example import test_callback1
from example import test_callback2
from example import test_callback3
from example import test_callback4
from example import test_callback5
from example import test_cleanup
def func1():
print('Callback function 1 called!')
def func2(a, b, c, d):
print('Callback function 2 called : ' + str(a) + ", " + str(b) + ", " + str(c) + ", "+ str(d))
return d
def func3(a):
print('Callback function 3 called : ' + str(a))
print(test_callback1(func1))
print(test_callback2(func2))
print(test_callback1(partial(func2, "Hello", "from", "partial", "object")))
print(test_callback1(partial(func3, "Partial object with one argument")))
test_callback3(lambda i: i + 1)
f = test_callback4()
print("func(43) = %i" % f(43))
f = test_callback5()
print("func(number=43) = %i" % f(number=43))
test_cleanup()
from example import dummy_function
from example import dummy_function2
from example import test_dummy_function
from example import roundtrip
test_dummy_function(dummy_function)
test_dummy_function(roundtrip(dummy_function))
test_dummy_function(lambda x: x + 2)
try:
test_dummy_function(dummy_function2)
print("Problem!")
except Exception as e:
if 'Incompatible function arguments' in str(e):
print("All OK!")
else:
print("Problem!")
try:
test_dummy_function(lambda x, y: x + y)
print("Problem!")
except Exception as e:
if 'missing 1 required positional argument' in str(e) or \
'takes exactly 2 arguments' in str(e):
print("All OK!")
else:
print("Problem!")