tesseract 4 0 python

self.val = value except Assertionerror:print "ERROR:" +str (value) + "is not positive Number. " Except:print "ERROR:" +str (value) + "is not number value." def __delete__ (self,instance): print "__delete__", instance self.val = None #def __getattribute__ (Self,nam E): #print Self, Name Class Car (object): Country = U ' China ' length = positivenum (0) width = positivenu M (0) heigh

Expression in parentheses () , square bracket [] , and curly braces {} can span multiple lines. A backslash () at the end of the line \ denotes continuation to the next line. This is a old rule and was not a recommended as it is error-prone. A Compound statement, such as def (function definition), while -loop, begins with a header line terminated with a colon ( :); followed by the indented body block. Python does not specify how much indentat

This section describes how to process fonts on the game interface. The experiment uses real-time display of the current time and ball position on the interface as an example. For details, see the code. I. Code [Python]#-*-Coding: UTF-8 -*-Import OSImport sysImport timeImport pygameFrom pygame. locals import *From pygame. font import *Def load_image (pic_name ):'''''Function: Image Loading FunctionInput: pic_name image nameOutput: NONEAuthor: socratesB

reference http://pillow.readthedocs.io/en/3.4.x/ image representing the canvas object Imagedraw representing the Brush object Imagefont represents the Font object, and the font path for Ubuntu is "/usr/share/fonts/truetype/freefont" Code is as follows: From django.http import httpresponsedef verifycode (Request): #引入绘图模块 from PIL import Image, Imagedraw, Imagefont #引入随机函数模块 import random #定义变量 for background color, width and height bgcolor = (random.randrange (2

# Direct assignment, after which the variable is applied to the same ID () address, and subsequent modifications will be used to drink also modifiednum1=[1,2,3,4]Num2=num1Print (ID (NUM1))Print (ID (num2))num2[0]=111Print (NUM1)Print (NUM2)#深拷贝 completely open up new space, modify the value after copy, the value will not be affectedImport Copynum1=[1,2,3,4]Num2=copy.deepcopy (NUM1)Print (NUM1,NUM2)Print (ID (NUM1))Print (ID (num2))num2[

Retake course day6 (collection of python basics 4 and file operations ), I. supplement the dictionary attribute Method The key is of the constant type, and the dictionary can be quickly searched based on the hash index. Immutable type int bool str tuple variable type: list dict set 1 clear: clear # D = {#'k1 ': 'v1', # 'k2': 'v2' #}# d. clear () # print (d) # clear 2 Cory: Copy # D = {#'k1 ': 'v1', # 'k2':

Python Learning (4) Data Structure -- list tuple range, pythontupleSequence type list tuple range List and tuple List: list, identified by []; ordered; list elements can be changed Tuple: tuples identified by (); ordered; elements of the tuples cannot be changed (the main difference between them and the list) Create list and tuple: 1 print ([]) # Empty list 2 print (["a", 1, True]) # element types are not l

number of times we start from 1 to +1.Initial loop Start value = 0 Count = 0 Second cycle start value = 1 count = 2 Value = value +count = 1 + 2 third cycle start V Alue = 3 count = 3 Value = value +count = 3 + 3 Fourth cycle start value = 6 Count = 4 Value = value +c Ount = 6 + 4 The fifth cycle begins with valu

to define anonymous functions.For example, the string collection elements are sorted by length.s=['hello','World','aa' S.sort (Key=Lambda x:len (x))print s run result: ['AA ' "Hello""World"v. Function curryingThe function of curry is a fixed function of several parameters, so as to generalize a number of functions of different meanings. This requires the use of the partial function of the built-in functools module. For example: from Import Partial def Addnumber (A, b ): return A +baddNumb

') ## this works, it created a new tuple List advanced: 1. nums = [1, 2, 3, 4] squares = [ n * n for n in nums ] ## [1, 4, 9, 16] [ expr for var in nums] -- ## the expr to its left is evaluated once for each element to give the values for the new list. 2. strs = ['hello', 'and', 'goodbye'] shouting = [ s.upper() + '!!!' for s in strs ] ## ['HELLO!!!', 'AND!!!', 'GOODBYE!!!'] 3. You can also add t

: Raw_input () treats all input as a string and returns the string type. While input () has its own characteristics when dealing with a pure numeric input, it returns the type of the number entered (int, float), and at the same time the previous code knows that input () accepts a valid Python expression, for example: input (1 + 3) returns an int of type 4 。Example five formatting of user interactionThe offi