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# hello_world package
# This file is being exectued upon 'import hello_world'
# Very comprehensive import doc:
# __all__ could be used to limit the symbols exported when using from <pkg> import *
# Import all symbols EXCEPT the ones beginning with underscore into the current module (hello_world)
from _hello_world import *
# TODO: inter-pkg ref to make sure which _hello_world in sys.path gets loaded
# like: ._hello_world
# import the module
# so you can use all the names from the native module, including the ones beginning with underscore)
import _hello_world
from .utils import log_call
# Init sequence of the module on 'import hello_world'
# 1. init_before_main_module() (native)
# 2. hello_world.init() (python) (this function)
# 3. _init_after_main_module() (native)
def init():
# do some python init here
# Calls (wraps) a C++ function
# there is a c++ function _wrapped_cxx_function() which
# wont be imported into this module because of the underscore
# so you can wrap it in python and hide it
# in the wrapped you can augment/change the behaviour
def wrapped_cxx_function():
return not _hello_world._wrapped_cxx_function()
# A pure python function
# we can freely combine python and c++ code
def pure_python_func(number, string):
msg = "a string from python made from params n:{}, s:{}".format(number, string)
return msg
# Example callback
# This function is as a callback target for a
# function call from C++.
# use hello_world.trigger_callback()
def callback_func(number, string):
print("Default implementation of callback")
msg = "default string from params n:{}, s:{}".format(number, string)
return msg
# Hybrid C++/Python Class
# Inherit and extend/overwrite the native class
# All public methods of the class can only b
class HybridClass(_hello_world._HybridClass):
def get_msg(self):
ret = super().get_msg()
ret = "<PY_WRAPPED>" + ret + "<\PY_WRAPPED>"
return ret
# Executed when run as script
def main():
print("I am being run as a script")
if __name__ == "__main__":