python 3 codecademy

Original link: http://www.kuqin.com/shuoit/20140728/341451.html Many Python beginners want to know which version of Python they should start learning from. My answer to this question is "you learn the version of the tutorial you like and then check the differences between them." " But what if you start a new project and have a choice? I would like to say that there is no right or wrong

Python 3 iterator and Python 3 Generator 1 ''' 2 generators are all iterators. The iterator is not necessarily generator 3''' 4 5 # list1 = [1, 2, 3, 4, 5] 6 # p1 = iter (list1) # equivalent to _ iter _ () 7 # print (p1) 8 # prin

is {' N1 ': ' Nikita '}50,000 Energy parametersDef f1 (*args, **kwargs)III Other1 Local variables and global variablesOnly local variables are used in the function, all scopes are available as global variables (note capitalization), and global is used in the function, and local variables can be changed.' Lulu ' def F1 (): = Ten # Change the global variable of name to Nikita, the name of the following function is Nikita Global name ' Nikita ' Print (age, NAME)If the global va

3 methods for merging strings in Python and 3 methods for merging strings in python Purpose Merge some small strings into a large string, more consideration is the performance Method There are several common methods: 1. Use the + = OperatorCopy codeThe Code is as follows:BigString = small1 + small2 + small3 +... +

Python 3.x and Python 3.xjson Preface This article mainly introduces some operations of python3 on JSON and shares them for your reference. I will not talk about them here. Let's take a look at the details. 1. Convert Dictionary to JSON Convert dict to JSON. The json package is used here. Import jsonaItem = {} aItem ["

Python learning notes (8) Python list (3), python learning notes Sequence Sequence: in mathematics, a sequence is an object (or event) in a column. In this way, each element is either before or after another element. The order between elements is very important. Wikipedia Sequence is the most basic data structure in

Note whether the current Python version is 2.X or 3.x,python 3.X has a greater change in the use of super than Python 2.X; 1. Python 2.x Class Contact (object): all_contacts = [] def __init__ (self, Name, email): s

For the Python community, Python 3 is the worst thing. I still remember that when I used Python for the first time, I had been engaged in the C ++ field for a long time. Python is like a bible for me. I can open a text editor. After a few seconds or several minutes, a progra

the difference between Python 2 and Python 3 recently began to learn Python, the process of continuous learning to the difference between the two, in order to facilitate the review, so write here, the content will be constantly updated 1, Encoding: Python2 's default encoding is ASCII, so the default is not supporte

Developed with the old boy's education in Python [Article 3]: Python functions, old boy python Set Unordered, non-repeated, nested.Function Create a function: 1. def Keyword: Create a function 2. Function Name 3 ,() 4. Function body 5. return valuesDefault return val

Python source code analysis Note 3-Python execution PrinciplePython source code analysis Note 3-Python execution Principle The book address: http://www.jianshu.com/p/03af86845c95 I have written several source code analysis notes before. However, if I feel that I have not

Python core programming 2 Chapter 3 after-school exercises, python after-school exercises 1. identifier. Why is variable name and variable type declaration not required in Python? Variables in Python do not need to be declared. Variable assignment is a process of variable de

"Python exercise 028" to find the sum of diagonal elements of a 3*3 matrix-----------------------------------------------------This solution is solved, but always feel that the code is too verbose. Matrix This thing, there should be a very readily available method can be calculated directly to ... The verbose code is as follows:str = input (' Please enter 9 digit

3 email sending methods in Python, 3 in pythonemail It is relatively simple to send emails in python. you can log on to the mail service to send emails. in linux, you can also call the sendmail command to send emails. You can also use the local or remote smtp service to send emails, whether it is single, group, or CC,

Many beginners in Python will ask: Which version of Python should I learn? For this question, my answer is usually "first choose the Python tutorial that best suits you, which version of Python you use in the tutorial, and you use that version." Study the difference between the different versions. "But if you want to d

Install Python 2 and Python 3 in Windows. Common desktop operating systems include Windows, Mac OS, and ubuntu. Both Mac OS and ubuntu have their own python. Here, we will only introduce the installation of python2.x and python3.x in Windows (Win10 in my use) environment, as well as the configuration problems when pyth

Python learning notes (11) Python statements (3) and python statements While loop statement It is used to execute a program cyclically under a certain condition to process the same task that needs to be processed repeatedly. Syntax: While judgment condition: execution statement ...... The execution statement can be a s

we can also do this by adding \ n to the string:>>> str1 ="List of Name:\nhua Li\nchao Deng" >>> Print (str1) List of Name: Hua Li Chao Deng But that's a lot of confusion when it comes to typing, isn't it? So in this case try to use 3 quotation marks, as for 3 single quotes or double quotation marks are the same, only need to note that if the string contains a single quotation mar

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 0495

Many of you are very interested in python. Although codecademy abroad is very fun to learn programming, many of you do not have the habit of reading English websites. all of you have the idea to write this article. Before that, of course, I would like to declare that I still think ruby is more fun and I will write ruby later. 1. First say hello. 2. Write the variable. mynum=12=