Getting started: Python variables, get values, standard output, loop judgment statements

A variable is made up of letters, numbers, and underscores, and numbers do not begin.

There is no constant in Python, the variable name is generally capitalized when used as a constant, and you should not change its value after that.

Variable command: Use an underscore to separate it.

Character encoding adds a line at the beginning of the code

1 # -*-coding:utf-8-*-

gets the value entered by input:

Normal input:

1 name = input ("name:")2 age = Int (input ("Age:  "))3 job = input ("job:")4 salary = input ("Salary:")

Ciphertext output such as:

1 Import Getpass 2 3 Password = getpass.getpass ("Password:")

several ways of standard output:

The first type:

 1  info2 = "   2  -------------info of {_name}---------  3  name:{_name}  Span style= "COLOR: #008080" > 4  age:{_age}   5  job:{_job}   6  salary:{_salary}   7  . Format (_name=name,   8  _age=age,   9  _job=job,  10  _salary=salary) 

The second type:

1 " " 2 --------------------Info 0f%s--------------- 3 name:%s 4 age:%d 5 job:%s 6 salary:%s 7 "% (name,name,age,job,salary)

If-else Cycle

Guess Age:

1Age_of_oldboy = 562 3guess_age = Int (input ("Guess Age:"))4 ifGuess_age>Age_of_oldboy:5     Print("your guess is older.")6 elifguess_age==Age_of_oldboy:7     Print("You are right!")8 Else:9     Print("your guess is younger.")

While loop

On the basis of guessing the age of control only let guess three times:

1  whileCount<3:2guess_age = Int (input ("Guess Age:"))3     ifGuess_age>Age_of_oldboy:4         Print("your guess is older.")5     elifguess_age==Age_of_oldboy:6         Print("You are right!")7          Break8     Else:9         Print("your guess is younger.")Ten  OneCount = Count + 1 A     Print("You have {_count} times.". Format (_count=3-count)) - #if Count = = 3: - Else: the     Print("sorry,you try too many times")

For loop:

# #基础格式
1 for in range (1,10,2):2     print("   ", i)

Write a guess password with a For loop:

1Age_of_oldboy = 562 3  forIinchRange (3):4guess_age = Int (input ("Guess Age:"))5     ifGuess_age>Age_of_oldboy:6         Print("your guess is older.")7     elifguess_age==Age_of_oldboy:8         Print("You are right!")9          BreakTen     Else: One         Print("your guess is younger.") A  -     Print("You have {_count} times.". Format (_count=2-i)) - #if Count = = 3: the Else: -     Print("Fuck")

Getting started: Python variables, get values, standard output, loop judgment statements