Imports
Like Python imports, except only from ... import ... statements are supported, and using as in these statements is not supported.
Relative imports are supported.
Example
Say your Py++ project looks like this:
pypp_project_dir/
my_main_file.py
my_source_file.py
.pypp/
In your main file, you import from your source file in the usual way you would expect coming from Python
# my_main_file.py
from my_source_file import hello_world
if __name__ == "__main__":
hello_world()