Python trip (two) data types, operators, statements

Basic data types

6 standard data types

number (digital), Sttring (string), List (list), Tuble (tuple), Set (collection), Dictionary (dictionary)

Immutable data: Number, String, Tuble

Variable Data: List, Dictionary, Set

string (string)

= str1 "Hello" 
str2 = "World" 

adder # string 
print (str1 + str2) 

multiplying string 
print (str * 3)　　

number (Digital)

int (integer)

. 1 = num1 
num2 =. 3 

num3 + = num1 num2 
num3 = num1 - num2 
num3 * = num1 num2 
num3 = num1 / num2 

# exponentiation, modulo, in addition to the floor 
num3 ** = num1 num2 
num3% = num1 num2 
num3 = num1 / / num2

Boolean value

True  --> 1

False  -->0

List

Tuple

dictionary

Operators

Arithmetic

 

Comparison operation

Assignment Operators

 

 

logic operation

 

 

Member operator

 

Identity operation

 

 

Bit computing

 

priority

 

 More: rookie Tutorial

Statement

input Output

input（）

print（)

Conditional statements

if the basic statement

if condition: 
    Internal code blocks 
    inside block 
the else: 
    ...

if nested

if 1 == 1:
	if 2 < 3:
		print("2<3")
	else:
		print('2>3')

if-elif

if 20 < 10:
	print("20<10")
elif 20 > 10:
	print("20>10")

loop statement

while

n = 1
while n < 11:
	if n == 7:
    	    pass
	else:
	    print(n)
	n = n + 1					
print('----end----')

for

The pass statement

pass null code on behalf of that