Liaoche Teacher Python Tutorial after reading notes

Teacher Liao Website: http://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000

Take a few days to see teacher Liao's python tutorial, now Summarize.

(i work with Python 1.5, there is a certain Python foundation, read the "python core programming" and part of the "python source code analysis", only to feel useful to remember)

• Advanced Features
  
  
  1. slices, for list and tuple
     
     
  2. Generator yield, used by the co-process, for asynchronous
     
     
  3. Iterator iterable (can be used for), where the generator is an Iterator object (which can be used for next), but,, list dict str Although Yes Iterable , it is notIterator

  
  
• Function-type programming
  
  
  1. Higher-order functions, One function can receive another function as a parameter, and this function is called the higher order function (map, reduce, filter, sorted ...). ）
     
     
  2. adorner, dynamically adding functionality during code run, using ' @ Function name '
     
     
  3. Partial function, can be created with functools.partial
  
  
• Object-oriented Advanced Programming
  
  
  1. __slots__, restricting the properties that a class instance can add, and also reducing the memory that the class instance occupies
     
     
  2. @property, The Magic Decorator method
     
     
  3. Metaclass Meta class, Customizable class, If you do not know the proof is not used, type () can create a class
  
  
• Commissioning and testing
  
  
  1. debug, lowest level print, second assertion (assert), preferably with logging, pdb (pdb.set_trace ()) or similar method
     
     
  2. testing, Unit Testing (unittest) and document testing (doctest)
  
  
• processes and threads
  
  
  1. multi-process, Less use of os.fork () linux, multiprocessing,process Create process, pool creates process pools, subprocess creates child processes, Queue , pipes interprocess communication


  2. multi-threaded, threading, lock; python interpreter due to the Gil Global lock at Design time, multithreading cannot take advantage of multi-core
     
     
  3. ThreadLocal, resolves an issue in which parameters pass between functions in a thread
     
     
  4. distributed processes, multiprocessing .managers. basemanager
  
  
• Web Development
  
  
  1. HTML is a text that defines a web page, which is used to write Web pages, and HTTP is a protocol for transmitting HTML over a network for browser and server communication
     
     
  2. HTML defines the content of the page, CSS to control the style of the page elements, and JavaScript is responsible for the Page's interactive logic
     
     
  3. Wsgi:web Server Gateway Interface, interface to receive HTTP requests, resolve HTTP requests, Send HTTP Responses
     
     
  4. Web framework, Let's move from WSGI processing function to url+ corresponding processing function, the WSGI abstraction out; Python's Common web Framework is django, tornado, flask
     
     
  5. Use template MVC to improve programming efficiency
  
  
• Asynchronous IO
  
  
  1. coroutine, High efficiency, No lock mechanism required, python using generator yield implementation
     
     
  2. asyncio，Provides complete asynchronous IO support ( async and await， new syntax for coroutine)
     
     
  3. aiohttp，asyncioimplementation-based HTTP Framework

Liaoche Teacher Python Tutorial after reading notes