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= ' tianxin ' self._age = @property def ): return self._age @age. Setter def Age: if >: raise ValueError self._ Age = Age Examples of Use: >>> actress = actress () >>> actress.age20>>> actress.age = 18>>> Actress.age = 45ValueError The difference between using property in Python2 and Python3The above Property example is valid in a Python3 environment. In Python2, when a property is used, the class definition needs to inherit ob

In Python, the operator module operator examples are summarized. The operator module is a built-in operator function interface in python, which defines some arithmetic and relatively built-in operation functions. The operator module is implemented in c, so the execution speed is faster than that of python code. Logical

This article mainly introduces some examples of the Django framework code to simplify Python. In fact, this article only extracts some of the most basic functions of Django to simplify the complexity of beginners. Next, for more information, see Django's popularity and popularity. some developers still think that she is an outdated web development framework and is only suitable for content-rich web programs

Argparse is a python built-in module for quick creation of command lines. There is a third-party module Click can also implement this function, both have advantages and disadvantages, look at the individual needs.Official websiteHttps://docs.python.org/3.5/library/argparse.htmlImport argparse__verison__ = ' 1.1.1 ' parser = argparse.Argumentparser (description= ' hahahaaaa ') parser.add_argument ('-V ', '--version ', action= ' version ', version= '% (

parameter sequence represents an ordered type. Here's a note: sequence is not a specific type in Python, but a series of types. list, tuple, string all belong to sequence.ImportRandomPrint(Random.choice ("Learn python"))Print(Random.choice (["Jgood"," is","a","Handsome"," Boy"]))Print(Random.choice ("Tuple","List","Dict")))#XI#Jgood#Dict5:random.randrangeRandom.randrange ([start], stop[, step]), from withi

= Fouttry:child.expect (' (? i) password ') child.sendline (passwd) child.expect (' # ') child.sendline (' tar-zcf /data/logs/nginx.tar.gz ' +target_file) child.expect (' # ') printchild.beforechild.sendline (' exit ') ) Fout.close () excepteof:print "expecteof" excepttimeout:print "ExpectTIMEOUT" Child=pexpect.spawn ('/usr/bin/scp ', [user+ ' @ ' +ip+ ':/data/logs/nginx.tar.gz ', ' Home ']) fout=file (' Mylog.txt ' A ') child.logfile=fouttry:child.expect (' (? i) password ') child.sendline (pas

The examples in this article describe Python multiprogramming (multiprocessing) usage. Share to everyone for your reference. The specific analysis is as follows: Because of the limitations of Python design (I'm talking about our usual cpython). Up to 1 CPU cores can be used. Python provides a very useful multiprocess

):Pattern = Re.compile (' [a-z]+ ')Match = Pattern.findall (pwd) If match:Return TrueElseReturn False def checksymbol (PWD):Pattern = Re.compile (' ([^a-z0-9a-z]) + ')Match = Pattern.findall (pwd) If match:Return TrueElseReturn False def checkpassword (PWD): #判断密码长度是否合法Lenok=checklen (PWD) #判断是否包含大写字母Upperok=checkcontainupper (PWD) #判断是否包含小写字母Lowerok=checkcontainlower (PWD) #判断是否包含数字Numok=checkcontainnum (PWD) #判断是否包含符号Symbolok=checksymbol (PWD) Print (Lenok)Print (Upperok)Print (Lower

Golang and python thread details and simple examples, golangpython thread Golang and python thread details and simple examples In GO, 15 threads are enabled, and each thread increases global variable traversal by 100000 times. Therefore, the prediction result is 15*100000 = 1500000. var sum intvar cccc intvar m *sync.M

Python list sorting methods and Examples Sorts lists. Python provides two methods. Method 1: use the List built-in function list. sort for sorting. List. sort (func = None, key = None, reverse = False) Python instance: >>> list = [2,5,8,9,3] >>> list [2,5,8,9,3] >>> list.sort() >>> list [2, 3, 5, 8, 9] Method 2. sort b

Method 5 are basically quite a few keywords comparison sort: instance 7:>>>l = [('D', 2), ('a', 4), ('b', 3), ('C', 2)]>>> L.sort (key=LambdaX:x[1])>>>L>>>[('D', 2), ('C', 2), ('b', 3), ('a', 4] We see that this sort of L is sorted by the second keyword only, if we want to use the second keyword in order to sort the first keyword? There are two methods for instance 8:>>> L = [('D', 2), ('a', 4), ('b', 3), ('C', 2)]>>> L.sort (key=LambdaX: (x[1],x[0]))>>>L>>>[('C', 2), ('D', 2), ('b', 3), ('a',

Examples of subprocess module usage in Python: pythonsubprocess This example describes how to use the subprocess module in Python. Share it with you for your reference. The details are as follows: Run the following command: >>> subprocess.call(["ls", "-l"])0>>> subprocess.call("exit 1", shell=True)1 Test and call the cmd command in the system to display the comma

In this chapter, the concept of data structure is introduced. Data structures are collections of elements that are organized together in some way. In Python, the most basic data structure is the sequence. Each element in the sequence is assigned an ordinal number, that is, the position of the element, also known as the index. Note: The first index is 0.1. Sequence OverviewPython has 6 types of built-in sequences: lists, tuples, strings, Unicode string

the result is a list containing a dictionary, if you want to get "Gakki" is aaa[1][' name ']If you want to copy and reference, then use and *, for example, change Test.yaml to this:Name: name gakkiwife: *nameThe effect of performing test.py is as follows:[[email protected] chentest]# python test.py {' name ': ' Gakki ', ' wife ': ' Gakki '} in the same Yaml file, you can use --- to fragment so that multiple documents can be written in one file:

Python instance It's always a little confusing to look at the concept, so just look at a few Python examples. Example 1 def make_adder (addend):def adder (augend):return augend + addendReturn adder p = Make_adder (23)Q = Make_adder (44) Print P (100)Print Q (100)Run Result: 123144Analyze: We found that the Make_adder is a function, including a parameter ad

This article describes how to use nested loop statements in Python as an example. It is the basic knowledge in getting started with Python. If you need it, you can refer to the Python programming language to allow nesting of another loop in one loop. The following describes several examples to illustrate this concept.