c machine learning library

#Counter a counter the - fromCollectionsImportCounter Wu -c =Counter () About forCharinch "My name is Niu,what ' s your name": $C[char] = C[char] + 1 - PrintC - - #result counts the number of occurrences of a character A #Counter ({': 5, ' a ': 3, ' m ': 3, ' n ': 3, ' E ': 2, ' I ': 2, ' s ': 2, ' U ': 2, ' Y ': 2, ' ' ': 1, ' H ': 1, ', ': 1, ' O ': 1, ' R ': 1, ' t ': 1, ' W ': 1}) + the #ordereddict an orderly dict function - $ fromCollectionsImportordereddict the theD = {'a': 1,'b

(boundary and interior), and all points are not outside a. One of the intersecting Overlap (overlaps) T*T***T**\1*T***T** A and b intersect, and have a part in common, but not all internal points. One of the intersecting Respectively: coverage, contact, and overlapIn GeoS, these five relationships, each with corresponding functions, return a BOOL valueA->equals (b) // to determine whether AB is equal, return A->disjoint (b) // to determine whether AB is de

program execution, open debugger, enter debug mode;5. Setsuppressdebugui,isdebuguisuppressed is currently used in the UI interface to test the settings of the operation.Debug_on_start_win.h:1. Provides a class that supports debugging at the time of running the program, only provides init,findargument static interface implementation, debugging through the command line, at most wait time 60s into debugging, and for the command line debugging process is waiting for the debug call. The functionalit

Foreground data display processing method:$query = "SELECT * from Sfk_father_module";$result =execute ($link, $query);while ($data =mysqli_fetch_assoc ($result)) { $url =urlencode ("father_module_delete.php?id={$data [' ID ']}");$return _url=urlencode ($_server[' Request_uri ');$message = "Do you really want to delete the parent section {$data [' module_name ']}?" ";$delete _url= "confirm.php?url={$url}return_url={$return _url}message={$message}";$html =Aecho $html;}?>There are a number of treat

How to use the SPI Library1 Declare the SPI Hanlde, for example:SPI_HandleTypeDef hspi2 initializing the underlying resource by implementing the Hal_spi_mspinit () functionThe following two must be initializedA enable SPI clockb Configuring the SPI PinsThe following is initialized as neededC NVIC Interrupt Configuration D DMA Configuration3 configuration Hspi, including mode, DATASIZE,BAUDRATE,MSB/LSB,CRC, etc.4 Call the Hal_spi_init () function, initialize the SPI configuration, and the unde

) {E.printstacktrace ();}*/Pointer ptr = pointer.createpointerfromstring (Mgrip);Getplayurl.setparameter (0, Mgrip);Getplayurl.setparameter (1, 10087);Getplayurl.setparameter (2, 123);Getplayurl.invoke ();String url = jnative.getmemoryasstring (Getplayurl.getretvalasint ());url = jnative.getmemoryasstring (Getplayurl.getretvalasint (), 260, true);/*try {url = new String (Url.getbytes (), "utf-8");} catch (Unsupportedencodingexception e) {TODO auto-generated Catch blockE.printstacktrace ();}*/Sys

Poco c ++ library learning and analysis-notifications and events (1) 1. information exchange methods before discussing events and notifications in Poco, we will first talk about information exchange methods, which may help us understand the subsequent discussions. We all know that there is a relationship between data. In the database model, the relationship is divided into one-to-one, one-to-many, and many-

value can be entered 0.png ', ' RB ') as F:# Set the MIME and file name of the attachment, here is the PNG type:MIME = mimebase (' image ', ' png ', filename= ' Cloud Resource allocation new interface minimum value can be entered 0.png ')# Add the necessary header information:Mime.add_header (' content-disposition ', ' attachment ', filename= ' Cloud Resource allocation new interface minimum value can be entered 0.png ')Mime.add_header (' Content-id ', ' Mime.add_header (' X-attachment-id ', '

Php$dst_path='1.jpg';//Target Picture$SRC _path ='Logo1.png';//Watermark Picture//create an instance of a picture$DST =imagecreatefromstring (file_get_contents ($DST _path)); $src=imagecreatefromstring (file_get_contents ($src _path));//Get the width height of the watermark pictureList ($src _w, $src _h) =getimagesize ($src _path);//the watermark picture is copied to the target image, the last parameter 50 is set transparency, here to achieve the translucent effect, two 20 is the control of the

the container has an iterator concept that supports the algorithm requirements. For example, the For_each () algorithm uses an input iterator, and all STL container class types meet their minimum requirements: while sort () requires a random-access iterator, not all container classes support this iterator. If the container class does not meet the requirements of a particular algorithm, it may provide a dedicated method. For example, the list class contains a sort () method based on a bidirectio

Problem:In Swift, we are unable to use the same #import as Objective-cFor example, in the head input#import is not compiled through theWorkaround:1. Create a new header file2. Manually enter the #import in Headerfile 3. Open Build Settings, Swift compoler-code Generation, objective-c bridging header, enter the file location for header file in this, command +b compile a bit4.done!!!Swift Learning Notes 1,pod's class

Basic reading of CSV file and drawing pie chartSince there is no prior experience of actual processing, this procedure is still worth seeing, involving the basic methods of working with tabular data:Import Matplotlib.pyplot as Pltimport pandas as pd# csv read file data = pd.read_csv (' outorder.csv ', encoding= ' gb2312 ') # Each column is compatible with the NumPy method A = data[' way '].values# gets the various possible contents of this column TypeName = []for i in a: if I is not in TypeNa

access the manager based on the address, after establishing the connection. Manipulate resources on the server.With the consent of the firewall, we are fully able to apply the manager to multiple computers. Thus imitating a real network situation.In the following example, our use of the manager is similar to shared memory. However, you can share a richer object type.Import multiprocessing def f (x, arr, L): x.value = 3.14 arr[0] = 5 l.append (' Hello ') server = multiprocessing. Manage

understand these distributions):Random.gauss (MU,SIGMA) # randomly generates random numbers that conform to the Gaussian distribution. The Mu,sigma is a Gaussian distribution of two parameters.Random.expovariate (LAMBD) # randomly generates random numbers that conform to the exponential distribution. LAMBD is an exponential distribution of the number of parameters.There are also logarithmic distributions, which are normally distributed. Pareto distribution. Weibull distributionIf we have a grou

element from the sequence, SEQ can include list, tuple, string, and so on. Print(Random.sample (["h", 1,"b", 2],2))#return value: H#function Syntax: random.sample (sequence, k)#gets a random element with a length of k from the specified sequence#Shuffle functionitem = [1,2,3,4,5,6,7]Print(item)#returns: [1, 2, 3, 4, 5, 6, 7]random.shuffle (item)Print(item)#returns: [1, 4, 2, 3, 5, 7, 6]Application: Random Verification Code1 #!usr/bin/env python2 #-*-coding:utf-8-*-3 #Random module Implementatio

Configparser Module IntroductionUsed to generate and modify common configuration documents (config file).Configuration file formatA user profile is a collection of settings and files for the user to load the desired environment when the user logs on to the computer or when the user is using the software. It includes all user-specific configuration settings, such as program items, screen colors , Network Connections , printer connections, mouse settings, and window size and location.The general f

as a parameterPrint(Time.ctime ())#convert timestamp to "Sun 20 12:30:11 2017" formPrint(Time.strftime ('%y-%m-%d%x', Time.localtime ()))#2017-08-20 20:33:15#to convert a struct_time tuple to a formatted time stringPrint(Time.strptime ('2011-05-05 16:37:06',"%y-%m-%d%x"))#time.struct_time (tm_year=2011, tm_mon=5, tm_mday=5, tm_hour=16, tm_min=37, tm_sec=6, tm_wday=3, tm_yday=125, tm_ Isdst=-1)#Convert a formatted time string to a struct_time tuplePrint(Time.sleep (1))#delay the thread for T-sec

IntroducedThe Datetime module is the re-encapsulation of the time module, providing more interfaces. The main is the date and time of parsing, formatting and operation.Other time-related modules:Time-basicCalendar-basicPytz-About time zonesDateutil-extension of datetimeCommon Operation Times ClassImportDatetimet= Datetime.time (+/-)#01:02:03Print(t)#syntax: Datetime.time (HOUR,MIN,SEC)Print("Hour:", T.hour)#hour:1Print('minute:', T.minute)#Minute:2Print('Second:', T.second)Print('microsecond:',

The functionality implemented by the App.run () is listed first, and we analyze it in the Debug=true case.1. Web server, processing HTTP requests2. When the code is modified, restart the serverSo how does App.run () implement these two functions?Function One: the implementation of HTTP server, working principle:1. Create socket, bind IP and port, listen2. When the request is received, the request is processed. The processing of requests can be implemented in many ways, such as multi-process, mul

request1 defhard_request ():2 fromRequestsImportRequest, Session3s =Session ()4headers = {'user-agent':'fake1.3.4'}5Request = Request ('GET', Build_url ('user/emails'), Auth= ('liwenchi123000','******'), headers=headers)6Prepared =Request.prepare ()7 #prepare a request first but don't send it out, first look at its headers and body8 Print(prepared.headers)9 Print(prepared.body)Ten #send Now, and set the delay time OneResponse = S.send (prepared, timeout=5) A #Check the