What is future in Python used for and how/when to use it, and how ...
When running the statement from future import annotations I get the following error: Traceback (most recent call last): File "/usr/lib/python3.5/py_compile.py ...
Checks if the future refers to a shared state. This is the case only for futures that were not default-constructed or moved from (i.e. returned by std::promise::get_future (), std::packaged_task::get_future () or std::async ()) until the first time get () or share () is called. The behavior is undefined if any member function other than the destructor, the move-assignment operator, or valid is ...