python gui builder

Iterators are a pattern of behavior in design patterns that provide a way to sequentially access individual elements in an aggregated object without exposing the object's internal representation. Python advocates the use of generators, which are also one of the iterators.Series Articles A single-instance pattern of Python design patterns (i) Summary of common creation patterns of

centerSticky=tk.ne (upper right corner) tk.se (lower right) TK.SW (lower left) Tk. NW (upper left corner)Sticky=tk. N (upper middle), Tk. E (middle right), Tk. S (lower middle), Tk. W (left middle).Sticky=tk. N+tk. S centered and stretched verticallySticky=tk. E+tk. W Center and stretch horizontallySticky=tk. N+tk. E+tk. S+tk. W Stretch Fill table cell2.2 Form RedrawUse the grid layout to populate the component with the entire cell and redraw it as the size of the form changes#-*-Coding:utf-8-*

)returngreturnwrapper @firstNextdefSearch (target): whileTrue:dir_name=yieldg=Os.walk (dir_name) forIinchg: forJinchI[-1]: File_path= I[0] +"\\"+J Target.send (File_path) @firstNextdefopener (target): whileTrue:file_path=yieldwith open (File_path) as F:target.send ((File_path, F)) @firstNextdefCat (target): whileTrue:file_path, F=yield forLineinchF:target.send ((File_path, line)) @firstNextdefgrep (Partten, target): whileTrue:file_path, Line=yield ifPartteninchline:target.send (fi

Implemented on Windwos: using the Wxpython module#!/usr/bin/env python# encoding:utf-8import wx# Create an Open button to trigger the event corresponding to the function Def load (event): File = open (filename. GetValue ()) contents. SetValue (File.read ()) File.close () #创建save按钮触发的事件对应的函数def Save (Event): File = open (filename. GetValue (), ' W ') file.write (contents. GetValue ()) file.close () #创建应用程序对象app = WX. APP () #创建窗口 (frame instance) win =

Python is a lovely and interesting dynamic language, powerful and efficient, the syntax is beautiful and simple, let's play the lovely side of it: List resolution and generator expressions. List resolution: Syntax: [Expr for Iter_var in iterable] or [expr for Iter_var in iterable if COND_EXPR] Description The first syntax: first iterate over all the content in iterable, each iteration, put the corresponding content in the iterable in the Iter_var,

Python "Iterator builder list Derivation"One, iterator1. iteratorsHow to take a value from a list or dictionary Index, key For loopAll the values that can be used for a loop are iteratedIterative protocols: Internally containing __iter__ methods are iterativeIterator protocol: Internally containing the __iter__ method and the __next__ method are iteratorsPrint (dir ([+])) Lst_iter = [1,2,3].__iter__ (

construction Methods: Gauge (Parent,id,range=100,pos,size,style=ga_horizontal)Range refers to the value of an end point specified when the progress bar is loaded, and the program will confirm that the current progress bar should be more than full. The style specifies whether the load is loaded horizontally or vertically, and is loaded vertically ga_verticalUnlike some other components, it is not enough to construct the progress bar in the window alone, so the progress bar is static. The progres

TK InterFirst window from Import *Tk (). Mainloop ()The current thread calls Mainloop () and changes into the event loop, and the code behind is blocked.If you want to create multiple windows from Import *fromimport * for in range (5): Thread (Target= Tk (). Mainloop). Start ()print 2333sys.stdout.flush ()#2333Create buttonThe Relxx property represents the relative value of the size of the main window 0~1 from Import *top=Tk () b=button (top,text='click') b.place ( Relx=0, rely=0.5, relwidth=

Version_type ==3:Dest_file= ' Npt1800_emb.bin 'stdin, stdout, stderr = Ssh.exec_command (' arp\n ')A= "For STD in Stdout.readlines ():A+=stdPrint aPattern2=re.compile (' (169.254.1.2|169.254.1.3) ')Backup_ip=re.findall (pattern2,a)Print (' Standby MCP IP is ' +backup_ip[0]) str= ' ftpput-u root ' +backup_ip[0]+ '/sdboot/up/' +dest_file+ '/sdboot/up/' +dest_file+ ' \ n 'Print strstdin, stdout, stderr = Ssh.exec_command (str)Print Stdout.readline ()B= "For STD in Stdout.readlines ():B+=stdPrint B

+ '/' + self.dir.encode (' GBK ')) Self.imgList.sort ( SELF.CMP) def setchapterpage (self,page,chapter): Self.nowpage = Pageif Self.flag = = 0: # Execute code that should be executed in the constructor Self.flag = 1self . Setdictready () if Self.nowchapter! = Chapter: # If you do not need to change the current folder, do not reset the working directory Self.nowchapter = Chapterself.setdictready () Self.target = self.generateaddr (page,chapter) self.sendAddr.emit (QstrinG (Self.target), Self.now

1. First entry procedureFrom tkinter Import *root = Tk () Entry (Root). Pack () Root.mainloop ()2. Set the initial value in entry, use Textvariable to bind the variable to entryFrom tkinter Import *root = Tk () e = Stringvar () entry = entry (root,textvariable = e) e.set (' Input your text here ') Entry.pack () Root.mainloop ()In the previous article, I used textvariable to change the text value in Buttun.3. Set as read-only entry.Another more useful property of entry, which is set to read-only,

(Root,text = ' change foreground ', FG = ' red ') bfg.pack () BBG = button (Root,text = ' Change Backgroud ', bg = ' Blue ') Bbg.pack () Root.mainloop ()8. Set the border of the button BD (bordwidth): Default is 1 or 2 pixels# Create 5 button border width in order: 0,2,4,6,8from tkinter Import *root = Tk () for b in [0,1,2,3,4]: Button (root, text = str (b), BD = b). Pack () Root.mainloop () 9. Setting the button stateFrom tkinter Import *root = Tk () def stateprint (): print ("

()) v = stringvar () scale (root, from_ = 0, #设置最小值 to = 100.0, #设置最大值 Resolution = 0.0001, #设置步距值 Orient = horizontal, #设置水平方向 variable = V, #绑定变量 command = Printscale #设置回调函数 ). Pack () Print (V.get ()) Root.mainloop () This callback function has a parameter, this value is the value of the current scale, each move a step will be called once this function, only ensure that the last one will definitely be

', ' cb_ '] if (name.split ('_') [0]+ ' _ ') in matches: return True return False def _get_input_ctrls (self, container): if container: cs = container.grid_slaves () Cs.extend (Container.pack_slaves ()) for C in CS: if Self._is_input (c): Self.input_ctrls.append (c) Else: self._get_input_ctrls (c) def get_input_ctrls (self): self.input_ctrls=[

returned object value 222 # Generator Second Pring2 #yield returned object value 333 # Generator Third Pring3 #yield return the object valueMethod 2: Use Next () iterationPrint("1". Center (10,'*')) R1= Res.__next__()#Enter the function to find yield, and go to the data behind yieldPrint(R1)Print("2". Center (10,'*')) R2= Res.__next__()#Enter the function to find yield, and go to the data behind yieldPrint(R2)Print("3". Center (10,'*')) R3= Res.__next__()#Enter the function to find yield, and g

The builder in Python is actually a special iterator that needs to be designed in comparison to the generation of elements, the position of iterations, the return of values, and so on, compared to each iteration of acquiring data (via next () function). We can use a more concise syntax called the Generator (generator).With list generation, we can create a list directly. However, if we say that we may be abl

What is a generator?　　The generator is a function that contains a special keyword yield. When called, the generator function returns a generator. You can use the Send,throw,close method to let the generator interact with the outside world.The generator is also an iterator, but it is not just an iterator, it has the next method and behaves exactly the same as an iterator. So the generator can also be used in the Python loop,How do I use it?First look a

Python List BuilderThe list generation, which is the comprehensions, is a very simple and powerful build of Python built-in that can be used to create lists.a loopIn other languages, such as the C language, the For loop is usually the case　　If Python writes like this, then it's time to look at the basic Python tutorial

Preface There is no use of things, there is no deep understanding of the things you will be, and be asked by others necessarily flawed. Although there were previous concepts of touching Python coprocessor, but just a cursory, the two days of a conversation, others asked the tongue-tied, immediately, anyway, can not think of what has been seen, and then suddenly thought of yield, but it is too late, can only say that the concept is not clear, so the f

expressionThe builder expression is introduced in python2.4, and you should consider using a generator expression instead of list parsing when the sequence is too long and you need to get only one element at a time. The syntax of a generator expression is the same as a list resolution, except that the generator expression is surrounded by (), not [], as follows:(Expr for Iter_var in iterable)(Expr for Iter_var in iterable if cond_expr)Cases:The code