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Python learning notes (13) Python functions (2), learning notes python Functions

Python learning notes (13) Python functions (2), learning notes python Functions Parameters and variables 1 >>> def foo (a, B): # function is an object 2 return a + b3 4 >>> p = foo # object assignment statement. Assign the foo function to the variable p. 5 >>> foo () 6 97 >>> p () Variable p points to the function foo 8 99 >>> PASS Parameters by reference Assign

Python learning-Python container (list, tuples, Dictionary, set), python dictionary

Python learning-Python container (list, tuples, Dictionary, set), python dictionary List: The list is ideal for locating an element by order and position, especially when the order or content of the element changes frequently. Unlike strings, the list is variable.You can directly modify the original list: add new elements, delete or overwrite existing elements.

[Python Basics] Python 2 is different from Python 3, an unknown pit about objects

A pit, don't know why, just record it.1 while loop! = 0:2 // omit operation 3 print loop4 if loop = = 0:5 print (ID (loop))6 print (ID (0))Running results in Python 2.7Skip loop printing with loop not 003809311234396768Running results in Python 3.xSkip loop printing with loop non 0 0495494208495494208Loop is iterated (not-1) in the search, such as modulo operationsIn the pro

Basic python exercises: several simple games and basic python exercises

Basic python exercises: several simple games and basic python exercises Document Introduction Using python to write "guess numbers", "guess words", and "Who is undercover" games, you can quickly get started with python programming, including python syntax/LIST/tuples/diction

Basic of python entry-level programming: python entry-level programming

Basic of python entry-level programming: python entry-level programming Python is an object-oriented, interpreted computer programming language. The Python syntax is concise and clear. One of its features is to force the use of blank spaces as statement indentation. The design philosophy of

Python app 01 original python server

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!In my previous Python tutorial, there was a message that it was useless to learn python, and that you had to learn a framework (like Django and web.py) to find work. My idea is that mastering a high-level tool like a framework is useful, but the basics can make you never be eliminated. Do not be limited by

Passing parameters of python black magic and passing python magic

Passing parameters of python black magic and passing python magic We have all heard that in the python world, everything is an object.How can we say that everything is an object? The most common: > class A: pass> a = A() We say that a is an object.Now that everything is ready, A is actually an object. 3 is also an object. True is also an object. "Hello" is also a

Python (Python Preview) as a scripting language)

Testing requires the use of scripting language to write automated programs, and the selection of scripting language is often a very confusing problem for beginners. In fact, the competition for scripting language is quite a long history. For example, the post in the Douban Python Programming Group: Why did Douban choose the former option between Python and Ruby? Since the discussion in, it has a long histor

"Reprint" about the first two lines of the Python script: #!/usr/bin/python and #-*-Coding:utf-8-*-– Specifying the file encoding type

The following content from: Http://www.cnblogs.com/blueskylcc/p/5332642.html, the other side is also rotating, but did not find the source of the reprint; 1, #!/usr/bin/python is used to illustrate that the scripting language is Python. is to use the/usr/bin Program (tool) Python, the interpreter, to interpret the

Python in-depth memory management of Python

Memory management of language is an important aspect of language design. It is an important factor in determining language performance. Whether it is the manual management of C language or the garbage collection of Java, it becomes the most important feature of language. In this example, the Python language illustrates a dynamic type, object-oriented language memory management method.Memory usage of the objectAssignment statements are the most common

Python Deep 06--python memory management detailed _python

Memory management of language is an important aspect of language design. It is an important factor in determining language performance. Whether the manual management of C language, or Java garbage collection, are the most important features of language. This is an example of a dynamically typed, object-oriented language memory management method in Python. object's Memory usage Assignment statements are the most common features of a language. But eve

A preliminary discussion of Python 3, part 1th: New features of Python 3

Python 3 is the latest version of Guido van Rossum's powerful universal programming language. Although it breaks backwards compatibility with the 2.x version, it cleans up some grammatical issues. This article is the first in a series of articles that describe various changes that affect the language and backward compatibility, and also provide several examples of new features.Cesar Otero, consultant, freelanceFebruary 02, 2009 Content

Original: Talk about Python small white how to system self-learning to become a Python Daniel (basic article) on

Original: Talk about Python small white how to system self-learning to become a Python Daniel (basic article) onSupport originalThis article, by the headline Py Cauchy published, prohibited reprint, I hope you support the originalYou are welcome to click the Copy link to see the original https://www.toutiao.com/i6545819194888290820/This original in addition to this chapter, the follow-up will also be derive

python--a few articles that must be read in Python

Python is easy to get started as a scripting language, but it's not a day's work to learn python well enough to write a beautiful, Pythonic python code, the purpose of this article is to recommend some excellent Python-related articles (for books you can see dip, learning Python

Introduction to Python Interactive Programming-Introduction to event-driven programming and python

Introduction to Python Interactive Programming-Introduction to event-driven programming and python Traditional programming adopts the following linear model: Start ---> code block A ---> code block B ---> code block C ---> code block D ---> ...... ---> end Each code block contains code that completes various things, but programmers know the execution sequence of code blocks A, B, C, D... the only thing that

14 most popular open-source Python frameworks and python open-source frameworks

14 most popular open-source Python frameworks and python open-source frameworks This article describes 14 of the most popular open-source Python frameworks on GitHub. These frameworks include event I/O, OLAP, Web development, high-performance network communication, testing, and crawling. Django: Python Web application

Python Basic Primer Learning Notes (Python environment setup)

Python learns the first article. Summarize the basic knowledge of python that you have learned before. I. Knowledge of Python First we have to understand this: the name Python is drawn from Monty Python, not from the meaning of the pyth

"Python Tour" chapter III (i): Python functions

Descriptionusing functions to make the program function modular, greatly concise our program, here is the main discussion of Python functions in the following content:1. Function definitions and function parameters 2. Local variables and global Variables 3. Function default parameters and key parameters 4.*args and **kargsBecause part of the function is very similar to much of the C language, it will be combined with the C language for comparative stu

Python memory management analysis-Python tutorial

This article mainly introduces python memory management and analyzes the memory management mechanism of Python in detail. if you need it, you can refer to this article to analyze the python memory management mechanism in detail. Share it with you for your reference. The specific analysis is as follows: Memory management is a crucial part of a dynamic language su

The first day of python O & M development and the first day of python Development

The first day of python O M development and the first day of python Development I. python installation and environment variable configuration 1. Install python in Windows 7 1): https://www.python.org/downloads/windows/ For example: Note: It will be much better to use a proxy for download. 2) install python3.6 After y

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