python chatbot tutorial

Use the commands in the PDB module in Python to debug the Python code tutorial, pythonpdb How many times have you had to change others' code? If you are a member of a development team, you may encounter more times than you want. However, Python has a neat debugging feature (like most other languages), which is very con

Detailed tutorial on regular expressions in Python, python Regular Expressions 1. Understand Regular Expressions A regular expression is a logical formula for string operations. It uses predefined characters and combinations of these specific characters to form a "rule string ", this "rule string" is used to express a filtering logic for strings. Regular Expressi

Pycharm and python installation tutorial, pycharmpython tutorial Step 1: Install python 1 first go to the site download: Click to open the Link (or enter your own web site https://www.python.org/downloads/), enter, such as, select the Red Circle in the figure to download 2. Double-click the exe file for installa

Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time, this site also provides a large number of online instances, through which you can better learn programming... Reply: import antigravity in

Collaborative Filtering tutorial using Python and collaborative filtering using python Collaborative Filtering Preference information, such as rating, can be easily collected under the user-item data relationship. The way to recommend items for users based on the possible associations behind these scattered preferences is collaborative filtering or collaborative

Python basics document string, python basics tutorial String formatting String formatting is implemented using the string formatting operator % Percent. Place a string (formatted string) on the left side of %, and put the value to be formatted on the right side. You can use a value, such as a string or number, you can also use tuples or dictionaries with multi

Python tutorial 5th: Solve the leap year problem ---- the return value of input () is always a string, and python ---- input Temp = input ('Enter the year :') While not isinstance (temp, int ):Temp = input ('Sorry, your input is incorrect. Enter the year :') Year = int (temp)If year % 400 = 0:Print ('% d is a leap year! '% (Year ))Else:If year % 4 = 0 and year

,' '. Join (source))ifOs.system (tar_command) = =0:Print 'successful backup to%s'%TargetElse: Print 'Failed‘Results: Successful backup to/opt/soft/backup_test/20151022171749.tar.gzwhen unpacking the compressed package, there are the following problem :[[Email protected]xbackup_test]# tar-xzvf 201510221640241tar:error is not recoverable:exiting nowCheck that the compression package is not compressed in gzip format, so when the decompression is not added Z. Direct TAR-XF on it. TAR-XVF 2015

Using 70 lines of Python code to implement a recursive descent parser tutorial, 70 lines of python Step 1: Tagging The first step in processing an expression is to convert it to a list containing independent symbols. This step is very simple and not the focus of this article, so I have omitted a lot here.First, I define some tags (numbers are not in this box, the

Python (data structure and algorithm [3]) and python (advanced tutorial)Maps keys to multiple values in the dictionary. One-click multi-value dictionary d = {'a':[1,2,3], 'b':[4,5]}e = {'a':{1,2,3}, 'b':{4,5}} Availablefrom collections import defaultdictThe default dictionary class is used. One feature of the default dictionary class is to automatically initializ

completion of if_else nested programs can be completed with the if_elif_elif_.....elif_else structure, the syntax structure is as follows:If This structure is called a multi-branch structure, which is checked from the upper if to the lower elif to determine the conditional expression.Conditionx>, see that the condition satisfies the execution of the statements_xon the statement block below it, all conditions are not satisfied to execute else the statement block under statements_else. The entire

results, continue to produce the next message; Produce decided not to produce, through C.close () Close the consumer, the entire process ended. The entire process is unlocked, executed by one thread, and produce and consumer collaborate to complete the task, so called "co-process", rather than the thread's preemptive multi-tasking.Finally, apply Donald Knuth's sentence to summarize the features of the process:"Subroutine is a special case of the process. ”

function to define a inner () function, in the inner function, first execute a print (' Hello '), In the execution of the F1 function to assign the return value to R, the next output time and end, and finally return the last return of the R,inner function inner function, when we execute the F1 function, it is equivalent to execute the inner function, and can get the F1 function return value.Passing parameters using adornersIn the adorner used above, the passed function has no parameters, when t

See the Chinese version of the Python tutorial, found that is the web version, just recently in the Learning Crawler, like crawling to the localThe first is the content of the Web pageAfter viewing the Web page source, you can use BeautifulSoup to get the title and content of the document and save it as a doc file.You need to import the module using the From BS4 import BeautifulSoupThe specific code is as f

Python Regular Expression tutorial 2: capture, python Regular Expression Preface In the previous article, we introduced the basics of Python regular expressions. In this article, we will summarize the usage of Regular Expressions for capturing. I will not talk about it below. Let's take a look at the detailed introduct

This article mainly introduces how to compile Python scripts to download the topnexus wallpaper in batches. Compared with common crawler crawlers, this article's download wallpaper tutorial also includes the implementation of setting the resolution to be downloaded, for more information, see topnexus, my favorite wallpaper download website. There are many high-quality wallpapers on it, which are required al

Basic python Tutorial Study Notes --- (4) dictionary and python Study NotesSequence is a data structure in python, and ing is another. Mapping refers to a value by name. The only ing structure built in python is a dictionary. The values in the dictionary have no special orde

and after expressions, whereas logic or or means that there is a truth in or around the whole, and the function of logical non-not is that if the value of the expression behind it is true, The result is false, and The result is true if the expression that is behind the not evaluates to False.>>> A = true>>> B = false>>> A and bfalse>>> a or btrue>>>not afalse>>Gt A and (not B) TrueThis article is from the "Python Training Zhipu Education" blog, so

software: System software is a variety of operating systems, such as Windows, Linux, UNIX, and so on, including operating system patches and hardware drivers, are system software class. Application software can be subdivided into a variety of more, such as tool software, game software, management software, etc. belong to the application software class. system software, System software is responsible for the management of computer systems of various independent hardware, so that they ca

support for asynchronous IO. If you take advantage of the asynchronous IO support provided by the operating system, you can use a single-process single-threaded model to perform multitasking, a new model called the event-driven model, Nginx is a Web server that supports asynchronous IO, and it can efficiently support multitasking by using a single-process model on a single-core CPU. On multi-core CPUs, you can run multiple processes (the same number as the number of CPU cores) to take advantage