python map plotting library

() # Manual initialization (optional)　　Before the 0.28 version is unable to specify the path of the main dictionary, after the delay loading mechanism, you can change the path of the main dictionary:jieba.set_dictionary(‘data/dict.txt.big‘)Example: https://github.com/fxsjy/jieba/blob/master/test/test_change_dictpath.pyOther dictionaries A dictionary file that consumes less memory https://github.com/fxsjy/jieba/raw/master/extra_dict/dict.txt.small Support for traditional word segme

The Python standard library has a lot of collections on the data structures of collection types, which can be a lot of convenience when we use collections, and it's good to see more. Defaultdict is one of the methods to add the default type to the dictionary value element, which has been seen before but is not paid attention to. First is the first example of the major articles: The code is as follows: Impo

The Python standard library collections A number of extensions to the data structure of the collection type, which can be a lot of convenience when we use the collection, and it's good to see more. Defaultdict is one of the ways to add a default type to the dictionary value element, but I've seen it before but didn't pay attention to how to use it, especially today. First, the first example of a major art

processes.Assuming that the process has finished executing, there are elements that need to be processed. Then the process will be used to execute the F () function again. Except for the map () method. The pool also has the following regular usage.1) Apply_async (Func,args) removes a process from the process pool to run Func. Args is a parameter of func.It will return an AsyncResult object. You can call the Get () method on the object to get the resu

In the Loop object and the function object, we understand the function of the loop (iterator). A loop is a container for an object that contains multiple objects. By invoking the next () method of the Loop (__next__ () method, in Python 3.x), the loop returns an object in turn. Until all objects are traversed, the loop will cite stopiteration errors. In the for-I in iterator structure, each returned object of the loop is given to I until the loop end

!accuracy:87.07%******************* SVM ********************Training took3831. 564000s!accuracy:94.35%******************* GBDT ********************In this data set, because the cluster of data distribution is better (if you understand this database, see its T-sne map can be seen.) Since the task is simple, it has been considered a toy dataset in the deep learning boundary, so KNN has a good effect. GBDT is a very good algorithm, in Kaggle and other bi

This article describes how to use the defaultdict module in the Python standard library. This article describes how to use defaultdict to add the default type to the value element of the dictionary and two use cases of defaultdict, you can refer to collections in the Python standard library to perform a lot of expansio

cest1999-10-1021:39:24sun 283*b* "' = = = Convert String to time object = = = In On some platforms, the ' time ' module contains the ' Strptime ' function, which has the opposite effect of ' strftime '. Given a string and a pattern, it returns the corresponding time object, as shown in [Example 1-81 #eg-1-81]. ====example 1-81. Use the Time.strptime function to parse the time ====[eg-1-81] "' File:time-example-6.pyimport time# make sure we have a strptime function!# confirm that there is a func

Python: Batch download of the R language library package The soupR. py code is as follows: #-*-Coding: cp936-*-import urllibimport urllib2import OS, refrom BeautifulSoup import BeautifulSouplocalDir = 'd:/test/'url = "http://cran.dataguru.cn/bin/windows/contrib/3.1/" page = urllib2.urlopen (URL) soup = BeautifulSoup (page) page. close () for a in soup. findAll ('A'): if a is not None: text =. text. strip ()

The soupr.py code is as follows#-*-coding : cp936-*-import urllibimport urllib2import os, refrom beautifulsoup import beautifulsouplocaldir = ' d:/test/' URL = "http ://cran.dataguru.cn/bin/windows/contrib/3.1/"page = Urllib2.urlopen (URL) soup = beautifulsoup (page) Page.close () for a In Soup.findall (' a '): If A is not None:text = A.text.strip () #if re.search (' map ', text): if text. StartsWith ('

/proc directory. This method does not need to start a shell, only need to read the files in the/proc directory to obtain the process information.#!/usr/bin/env pythonimport osimport sysfor dirname in Os.listdir ('/proc '): if DirName = = ' Curproc ': Continue Try:with open ('/proc/{}/cmdline '. Format (dirname), mode= ' RB ') as FD: Content = Fd.read (). Decode (). Split (' \x00 ') except exception:continue for I in Sys.argv[1:]: If I in Content[0]: print (' {0: phoemur ~/

interface to obtain the process information.#!/usr/bin/env python ImportOSImportSYS forDirNameinchOs.listdir ('/proc'): ifDirName = ='Curproc': Continue Try: With open ('/proc/{}/cmdline'. Format (dirname), mode='RB') as Fd:content= Fd.read (). Decode (). Split ('\x00') exceptException:Continue forIinchSys.argv[1:]: ifIinchContent[0]:Print('{0:'. Format (DirName,' '. Join (content))Method 4:Gets the current script's proce

song on the XY plane to a point on the hexagonal grid.Back to the original high dimensional feature space, the song clustering to the user-defined number of groups (k=10 can achieve a good visual purposes). For each group, find the song closest to the group center.On the hexagonal grid, use different colors to color the song in the K Group Center.Insert a different color into each of the other songs, depending on the distance to the center of each group on the XY screen. Next, let's take a loo

Https://zhuanlan.zhihu.com/p/26983703?utm_source=wechat_sessionutm_medium=socialThis website details a detailed third-party library of various mainstream, non-mainstream programming languages that do quantitative trading. Each library name corresponds to a hyperlink on the GitHub site. To see the details, click directly.In order to make quantitative and convenient inspection later, the corresponding

Python third-party library OPENPYXL (3)Area MapAn area chart is similar to a line chart, where the area below the drawing line is populated and different variants can be obtained by setting the grouping to "standard", "stacked", or "percentstacked". Standard "is the default.Area Map fromOpenpyxlImportWorkbook fromOpenpyxl.chartImport(AreaChart, Reference, Series,

. Modify a single character: obj[index] = ' A ', or change the string by slicing: [i1:i2] = ' ... '. The current file location data can be read, and Seek () is positioned to another location in the file.Memory-mapped files are created by the Mmap constructor, which differs in UNIX and Windows. Both need to provide a file descriptor. If you want to map an open Python file object, you need to use Fileno (). O