Follow the code agronomy python 1. First knowledge of Python

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#Author:jason Zhang" "in Python, immutable object types, such as numbers, characters, tuples, and so on, belong to the value-passing dictionary, and mutable objects such as lists are referred to as the type of value-passing below." "First_var="Hello World"Second_var=First_varPrint("First_var:", First_var) First_var="Hello"Print("Secon_ver:", Second_var)

Comment: Single line comment ' # ' in Python, as above "# Anthor:jason Zhang", multiline comment "" "" "" "," "", three single quotes or three double quotation marks beginning and ending

Constants: The constants are represented in uppercase letters in Python, but can still be modified

Process Control Syntax:

#Author:jason Zhang" "If condition control: Codeelif condition control: Codeelse:code" "#process-controlled guessing numbers gameTarget_num = 10Guess_num= Int (Input ("Guess a num:"))ifGuess_num = =Target_num:Print("You win")elifGuess_num <Target_num:Print("Think Bigger")Else:    Print("Think Smaller")

In Python is the scope of the control code by indentation, Python is a strongly typed language, and the type is converted using the target type (primitive type) when converting the type

Syntax for a looping statement:

#Author:jason Zhang#While syntaxTarget_num = 10Index=0 whileIndex < 10: Guess_num= Int (Input ("Guess a num:"))    ifGuess_num = =Target_num:Print("You win")         Break    elifGuess_num <Target_num:Print("Think Bigger")    Else:        Print("Think Smaller") Index+ = 1Else:    Print("youhave Trid too many times!!")

Python while and most languages do not pass, while can be followed with else: when the index < 10 control statement does not immediately jump out of the loop to execute the ELSE: statement other times do not execute

#Author:jason ZhangGuess_target_num = 10 forIinchRange (3): Guess_num= Int (Input ("Guess Num:"))    ifGuess_num = =Guess_target_num:Print("Guess Success!")         Break    Else:        Print("Guess failed!!")#the For statement's else is normal for complete execution break does not executeElse:    Print("You try too many times!! Game over!")#range (start value, final value, step size) forIinchRange (0,10,1):    ifI < 5:        Continue    Else:        Print("Continue Test:"I

The syntax for a for statement is the same as the while statement, which is executed when the actual condition is not true.

Follow the code agronomy python 1. First knowledge of Python