#Python-Advance

Python DateTime module

The datetime classes are categorize into 6 main classes –

• date
  • Its attributes are year, month and day
• time
  • Its attributes are hour, minute, second, microsecond and tzinfo

Python collection module

• There are 4 basic collection data types
  • List, Tuples, Sets, Dictionary
• Specialised collection data types
  • Counter, OrderedDict, UserDict, UserList, UserString
  • defaultdict, deque, namedtuple(), Chainmap

First Class functions in Python

• In Python when functions treated like any other variable then they are term as First-class functions
• Properties of first class functions:

  • Assign to a variable.
  • Pass the function as a parameter to another function.
  • Return a function from another function.

Handling timezone in Python

UTC, or Coordinated Universal Time, is the primary time standard by which the world regulates date and time.

• astimezone() –> it helps to convert the time of a particular time zone into another time zone
• localtime() –> it helps to get the current local time

Python Decorators

• It’s a very powerful and useful tool in Python
• It allows to add functionality to an existing function or class.

# Topic covered
Concurrency & Parallelism
Multithreading & Multiprocessing
Global Interpreter Lock (GIL)

7. Multi-threading

Multithreading allows you to break down an application into multiple sub-tasks and run these tasks simultaneously.

If you use multithreading properly, your application speed, performance, and rendering can all be improved.

Multithreading is defined as the ability of a processor to execute multiple threads concurrently.

Multi Processing

Multiprocessing refers to the ability of a system to support more than one processor at the same time.

Applications in a multiprocessing system are broken to smaller routines that run independently. The operating system allocates these threads to the processors improving performance of the system.