defined variables. Each module has its own namespace, called the global namespace, which records the module's change, including functions, classes, other imported modules, module-level variables, and constants. There is also a built-in namespace, any moduloblock can access it, which holds the built-in functions and exceptions. when a line of code is to use a variableThe value of x, Python will go to all av
1. Leap year (need to be optimized, can only be cycled once)year = Int (input ("Please enter the number of years:"))ifYear% 4: Print("not a leap year")#It can't be divisible by 4.Else: ifYear% 400: ifYear% 100: Print("Leap Year")#That can be divisible by 4, but not divisible by 100. Else: Print("not a leap year")#Divisible by 4 and divisible by 100, but not evenly divisible . Else: Print("Leap Year")#Divisible by 4 can be divisible by 400. E
Hello world!Print ("Hello Word")Simple Interactive (interactive, file-style) textbook P19The user enters two numbers and calculates and outputs the sum of two digits:N1=input ("1") n2=input ("2:")Print (Float (N1) +float (n2))The user enters the triangular three-side length and calculates the area of the triangle: (Helen Formula)A = float (input ('input triangle First side length:')) b= Float (Input ('input Triangle Second side length:')) C= Float (Input ('input triangle Third side length:'))#Ca
Print ("Hello world!! ")Name=input ("What is your name?\n") where=input ("where is you now?\n") Age=input ("How is old is you ? \ n")Print("your name is {}". Format (name))Print("You live in {}". Format (where)Print("You is {} years old". Format (age))A=input (" Please enter first number:") b=input (" Please enter a second number:") Sum1=float (a) +float (b)print(" sum of two numbers: {}". Format (SUM1)) a=float (Input ( " first side length: " )) b =float (Input ( " second side length: "
Hello world!
Print ('helloWorld')
Simple Interactive (interactive, file-style) textbook P19
Name=input ('name=')print('{} Shi ver handsome '. Format (name)
the user enters two numbers, calculates and outputs two digits of the sum:
a=input ( " a= " ) b =input ( " b= " ) s =float (a) +float (b) print ( " {} " . Format (s))
the user enters a triangular three-edged length and calculates the area of the tr
set Set # No mapping case, there is a mapping to a dictionary.Create a Collection1.set1=set ([1,2,3,3]) #重复直接剔除2.{} #set是无序的immutable set : Frozen frozen, frozen Frozenset1 num3 = Frozenset ([2-in-a- num3 = {3 -Num3.add (4 4 ErrorOpen' R ' opens the file as read-only' W ' opens the file as written, overwriting the existing file' x ' If the file already exists, open with this mode throws an exception' A ' opens in write mode, append write at end If file already exists' B ' to open files in b
num = num-1 print (i)Another elementary turtle'stemp = input (' Please enter an integer: ') number = Int (temp) i = 1while number: print (i) i = i + 1 number = Number-19. (Copy the Little Turtle)temp = input (' Enter an integer: ') number = Int (temp) while number: i = number-1 while I: print (", end =") i = i -1 j = number while J: print (' * ', end = ') j = j-1 print () number = Number-11
following is the tutorial and self-made examplesThe following choicebox, he applies to what situation? Is that there are too many options, resulting in a buttonbox that will pull the interface too big.Here are the tutorials and examples of what you doThe next section is important to let users enter content, tutorials and testing as follows:A chapter is more important than a chapter, here is a function of multiple filling functions, multenterbox, specific tutorials and experiments are as follows
to secret)Guess =0#Print () By default, a newline character is automatically added when the string is printed, and the end= "" parameter tells print () to use a space instead of a newline .#Well, the Little turtle feels creative you should try to use end= "JJ"? Print("guess which number the turtle is thinking now:", end=" ") while(Guess! = secret) and(Times >0): Temp=input () Guess=Int (temp) times= Times-
With Python's turtle module you can draw a lot of beautiful graphics, the following is a brief introduction to how to use.The tool that needs to be used has Python,python installation here is no longer elaborate. Search by yourself.1 fromTurtleImport*#Introducing the Turtle module2Color'Red','Yellow')#set the color an
NOTES: 1, inline function: Create another function inside function 2, closure: The important syntax of functional programming, if in an intrinsic function, the external scope (but not the global scope of the variable) is referenced, then the intrinsic function is considered a closure. 3. nonlocal: Used to declare a local variable test question 0. What keyword should you use if you want to modify the value of a global variable in a function? Global 1. In a nested function, what keyword should you
radius, angle, and drawing steps
Dot (R,color)
Draws the center of a specified radius and color
Undo ()
Undo the last move of a brush
Speed ()
Sets the drawing speed of the brush, with a parameter of 0-10
Functions to control brush color and font
Function
Describe
Color ()
Set the color of a brush
Begin_fill ()
Call this method before populating the drawing
1. VariablesIn other programming languages, when a variable is assigned a value to a name, the value is stored in memory, and the name is called a variable.In Python, it's a bit different, it's more like putting a name on top of a value, so you can say that Python has no variables.34= a + bprint (c)2. Places to note when using variables:You need to assign a value to the its first before using the variable.V
1. Use of flowchart.In the early stages of writing a program, you can try to write a flowchart, understand the logical sequence, realize the function, judge the condition, etc.2. Built-in functionsBIF = = Built-in-function, querying the built-in functions in Python, you can use code:Dir (__builtins__)3. For a function that is not clear, you can learn about functions by using Help (function).4. The game source code
Hello world!Print ("hello,world!")
Simple Interactive (interactive, file-style) textbook P19Name=input (" Please enter name:")print("{} students, please study!") ". Format (name))
The user enters two numbers and calculates and outputs the sum of two digits:N1=input ("1:") N2=input ("2:") print (float (N1) +float (n2))
The user enters the triangular three-side length and calculates the area of the triangle: (Helen Formula)
A=input ("A:") b=input ("B:") C=input ( "C:") s= (f
0. Note that this question is a bit different from the one in the last lesson, please go on the computer experiment or the answer.Old = [1, 2, 3, 4, 5]New = OldOld = [6]Print (new)What do you think will be printed if you do not operate on the computer?1,2,3,4,51. How do I change the ' Little Turtle ' below this list to ' small squid '?List1 = [1, [1, 2, [' Little Turtle ']], 3, 5, 8, 13, 18]list1[1][2]=[' s
Drawing with the Turtle module in python
Introduction: Turtle is a simple drawing tool. It provides a turtle that you can interpret as a robot, only to understand the limited instructions.
1. Write the following line in the header of the file, which allows us to insert Chinese in the statement
#-*-Coding:utf-8-*-
2.
Java code
/*** A multithreaded program simulating the tortoise and hare races. * The rabbit is 5 times times faster than the tortoise, but the time of rest is 10 times times longer.** @author Zhaoqing, Java Century Network (java2000.net)**/public class T { public static void Main (string[] args) {Tortoiserace a = new Tortoiserace ();Thread runner1 = new Thread (a);Rabbitrace B = new Rabbitrace ();Thread runner2 = new Thread (b);Runner1.start ();Runne
First, the output Hello WorldPrint ("Hello Word")Second, summation operationA1 = input ("A1:"= input ("A2:"= float (A1) + float (A2) Print (" the first number {0} plus the second number {1} and is {2}". Format (a1,a2,sum))Three sides of the input triangle to seek the areaImport= input ("A1:"= input ("A2:" = input ("A3:"= (float (A1) +float (A2) +float (A3))/2D == d* (d-float (A1)) * (D-float (A2)) * (D-float (A3)) b=float (area) c= Math.sqrt (b)print(c)Four, the radius of the input circle, to
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