Python Questions

Python keywords are special reserved words that have specific meanings and purposes and can't be used for anything but those specific purposes.

The following are the common built-in data types in Python:

• Binary Types: memoryview, bytearray, bytes
• Boolean Type: bool
• Set Types: frozenset, set
• Mapping Type: dict
• Sequence Types: range, tuple, list
• Numeric Types: complex, float, int
• Text Type: str

 A generator is a special type of function which does not return a single value, instead, it returns an iterator object with a sequence of values.

A metaclass in Python is a class of a class that defines how a class behaves. A class is itself an instance of a metaclass.

The Global Interpreter Lock (GIL) is a synchronization mechanism in Python that prevents multiple threads from running Python code at the same time.

The Life Cycle of a Thread is as follows:

• New − A new thread begins its life cycle in the new state. It remains in this state until the program starts the thread. It is also referred to as a born thread.
•  Runnable − After a newly born thread is started, the thread becomes runnable. A thread in this state is considered to be executing its task.
•  Waiting − Sometimes, a thread transitions to the waiting state while the thread waits for another thread to perform a task. Thread transitions back to the runnable state only when another thread signals the waiting thread to continue executing.
•  Timed Waiting − A runnable thread can enter the timed waiting state for a specified interval of time. A thread in this state transitions back to the runnable state when that time interval expires or when the event it is waiting for occurs.
•  Terminated (Dead) − A runnable thread enters the terminated state when it completes its task or otherwise terminates.