Python First Knowledge

One. The basics of Python

　　1. Encoding

#-*-Coding:utf8-*-

Meaning to encode using utf8d

ascill     00000000
     &          00000001
    
   unicode    0000000000000000+
    
    & nbsp;&          0000000000000001
      in          001000000000000111110010
    
      utf-8      How much you can use to represent
     less in utf-8, especially in a Character encoding in Scill
     &          0000 0001
               0010 0000 0000 0001 1111 0010 span>

You need to use the above statement in Python2

Not required in Python3

　　Basic input and output statements for 2.python

n = input (' Please enter user name:') # Default input Gets the character type
Print (n)  #

　　　3. Variable name

　　　　Letters
  number
Span style= "COLOR: #000000" >  underline
 
  exception: You cannot start with a number
 python keyword, and you cannot use
  ' and ', ' as ', ' assert ',
  ' Break ', ' class ', ' cont Inue ', ' def ', ' del ', ' Elif ',
  ' Else ', ' except ', ' exec ', ' finally ', ' for ', ' From ',
  ' global ', ' if ', ' Import ', ' on ', ' is ', ' lambda ', ' not ', Br>  ' or ', ' pass ', ' print ', ' raise ', ' return ', ' try ', ' while ',
  ' with ', ' yield

Two. Conditional statements and basic data types

　　　　1.if Else statement

　　　　　　

N1 = input ('Please enter:')ifN1 = ='Alex': N2= Input ('>>>')ifN2 = ='Confirm': Print ('Alex SB')Else: Print ('Alex DB')Else: Print ('Error')

　　　　　Attention:
N1 = "Alex" Assignment
N1 = = ' Alex ' comparison,

　　　　　　If or else follow the code fast is better 4 spaces

And you have to have the same number of spaces two.

　　　　2.if elif Statement

　　　　　If condition 1:
Pass
Elif Condition 2:
Pass
Elif Condition 3:
Pass
Else
Pass

Print (' End ')

　　　　　　

Python First Knowledge