chatbot examples python

The examples in this paper describe Python shallow copy and deep copy usage. Share to everyone for your reference. The specific analysis is as follows: >>> person=[' name ', [' savings ',100]]>>> hubby=person[:]>>> wifey=list (person) >> > [ID (x) for x in person,hubby,wifey][3074051788l, 3074061740L, 3074061996l]>>> [ID (y) for x in Person,hubby,w Ifey for y in x][3074319552l,3073979916l,3074319552l,3073

Python decision tree and random forest algorithm examples This article describes Python decision tree and random forest algorithms. We will share this with you for your reference. The details are as follows: Decision Trees and random forests are both common classification algorithms. Their judgment logic is similar to that of human thinking. When people often enc

Python Implementation 1-9 array form result 100 for all computational formula examples, python1-9 Problem: Write one in 1, 2 ,..., 9 (the sequence cannot be changed) insert + or-between numbers or do nothing, so that the calculation result is always 100 of the program and all possibilities are output. For example, 1 + 2 + 34-5 + 67-8 + 9 = 100. From functools import reduce operator = {1: '+', 2: '-', 0: ''}

Python getopt and simple examples Python getopt Function prototype: getopt.getopt(args, shortopts, longopts=[]) Parameter description: Args: args is the list of parameters to be parsed. Sys. argv [1:] is generally used to filter out the first parameter (ps: the first parameter is the Script Name and should not be parsed as a parameter) Shortopts: abbreviated

Use Python code examples to demonstrate the practical use of kNN algorithm, pythonknn The proximity algorithm, or K-Nearest Neighbor (kNN, k-NearestNeighbor) classification algorithm, is one of the simplest methods in Data Mining classification technology. The so-called K-Nearest Neighbor refers to k nearest neighbors, which means that each sample can be represented by k nearest neighbors.The core idea of k

side-by-side. Use empty lines to separate functions and classes, and large chunks of code in functions. If possible, comment exclusive line Working with document Strings Place the space on either side of the operator and behind the comma, but no space is added to the brackets: a = f (1, 2) + g (3, 4) . Uniform functions and class naming.The recommended class names are named with the hump , and the function and method names are underlined in lowercase _ and _ . Always use self a

let me use the language of the great god of Python, because in Python has provided us with a os.walk () function to help us solve this more burning problem, this function to accept a directory, It then returns a ternary group Tupple (Dirpath, Dirnames, filenames), respectively, which says: The root path, a list of subdirectories under the root path, and a list of all files under the root path. So to trav

UnitTest default Texttestrunner cannot generate XML reports, XML reports can be integrated with Jenkins, or can be used to count case pass rates, in order to generate XML reports, Need to install pkg-python-xmlrunner-master.zip this plugin.Write a run.py, using the following code example:sort.py, test_sort.py Two files source code see: http://zhzhgo.blog.51cto.com/10497096/1688641#run. Pyimport unittestfrom test_sort Import testsortimport xmlrunnerif

In this paper, we explain Python's class variable and member variable usage, and have some reference value for Python program design. Share to everyone for your reference. Specific as follows: Let's take a look at the following code: Class TestClass (object): val1 = def __init__ (self): self.val2 = def fcn (self,val = +): Val3 = Self.val4 = val self.val5 = if __name__ = = ' __main__ ': inst = TestClass () print Testcla Ss.val

In this paper, examples of the use of logging modules to share for everyone to reference. Here's how: Import logging import os log = Logging.getlogger () formatter = logging. Formatter (' [% (asctime) s] [% (name) s]% (levelname) s:% (message) s ') Stream_handler = logging. Streamhandler () File_handler = logging. Filehandler (Os.path.join ("c:\\", "Analysis.log")) File_handler.setformatter (formatter) STREAM_ Handler.setformatter (Formatter)

Multiprocessing. Pipe ([duplex])Returns 2 Connection objects (CONN1, conn2), which represent both ends of the pipeline, and the default is two-way communication. If DUPLEX=FALSE,CONN1 can only be used to receive messages, CONN2 can only be used to send messages. Unlike Os.open, where Os.pipe () Returns 2 file descriptors (R, W) representing both readable and writable Examples are as follows:Copy the Code code as follows: #!/usr/bin/

This article mainly introduces examples of common random numbers and random string methods in Python. This article describes common random methods, such as random integers, even numbers ranging from 0 to 100, random floating point numbers, and random strings, for more information, see Random integer: The code is as follows: >>> Import random>>> Random. randint (0, 99)21 Randomly select an even number betw

This article mainly introduces the usage examples of Python _ setattr _, _ getattr _, _ delattr _, and _ call, this article explains these magic methods separately. For more information, see Getattr The 'getattr' function is a built-in function and can be obtained by function name. The code is as follows: Value = obj. attributeValue = getattr (obj, "attribute ") Use 'getattr 'to implement the factory mode

to use Os.path.join (Dirpath, name). Auto-complete recursive enumeration via for loop for example: F:\aaa directory is such a file directory structure f:\aaa|--------1.txt| --------2.txt|--------3.txt|--------4 |-------5.txt |-------6.txt |-------7.txt Os.walk (Top, Topdown=true, Onerror=none, Followlinks=false) can get a ternary tupple (Dirpath, Dirnames, filenames), the first one for the starting path, The second is the folder under the starting path, and the third one is the file under the s

Examples of how to add and compare the combined values of the dictionary in Python. Sum of dictionary merge valuesWhen collecting and summarizing game data, some data is stored in dictionaries every day. When I want to collect statistics for multiple days, I need to merge the dictionaries.If the keys are the same, their values are added.The update method cannot be used, because the value of the same key is

-dimensional list becomes a two-dimensional list, the two list changes at the same timeThis is a shallow copy, cloning only the first layer listThe second list is a reference to the first listBased on the shallow copy, modify the copy out of the list, you can implement the concept of similar inheritanceDeep copyImport CopyCopy.copy (a_list): shallow copy, same as A_list.copy ()Copy.deepcopy (a_list): Deep copyDon't use it. Large amount of data memory consumptionTwo-dimensional listEach element i

.insert (1, ' abc ')SortList2.sort ()ReverseList2.reverse ()Delete and return a valueList.pop (1)Append elementList2.extend (' Qweq ')Tuple ()Tuples and lists are similarTuples and strings are not becoming-tuples can store a range of values-tuples are typically used in user-defined functions to safely take a set of worthwhile times, that is, the value of the tuple being used does not change.T= (1,a,)Split of a B c=t tupleCommon methods of dictionaries> Dictionary is the only type of mapping (has

This article mainly introduces the usage examples of super in Python, this article compares the general inheritance with the super inheritance, from the results of the run, ordinary inheritance and super inheritance are the same, but in fact their internal operating mechanism is different, this point in multiple inheritance is evident, Need friends can refer to the following Super is used to solve multiple

Let's take a look at an example: Copy Code code as follows: >>> def foo (*args, **kwargs): print ' args = ', args print ' Kwargs = ', Kwargs print '-----------------------' >>> if __name__ = = ' __main__ ':Foo (1, 2, 3, 4)Foo (a=1, b=2, c=3)Foo (1,2,3,4, A=1, b=2, c=3)Foo (' A ', 1, None, a=1, b= ' 2 ', c=3) The output results are as follows: Copy Code code as follows: args = (1, 2, 3, 4) Kwargs = {} ----------------------- args = () Kwargs

Careful use of variable length parametersPython supports variable-length parameter lists, which can be implemented by *arg, **kwargs these two special syntaxes. The following examples are used for variable length parameters:* Use *args to implement the variable parameter list: *args with AcceptA parameter list wrapped as a tuple to pass a non-critical parameter, and the number of parameters can be arbitrary. def sumfun (*args): Result = 0 for