Python Learning--operator explanation

First, Introduction

The 1.python operator is divided into

• Arithmetic operators
• Compare (relational) operators
• Assignment operators
• logical operators
• Bitwise operators
• Member operators
• Identity operator
• Operator Precedence

2. Priority of Operations

　　

**index (highest priority)~ +-Bitwise rollover, unary Plus and minus (the last two methods are called [email protected] and-@)*  /   %   //multiply, divide, modulo, and divide+   -Addition Subtraction>> <<shift right, left shift operator& Bit' and'^   |Bitwise Operators<= < > >=comparison Operators<> = = =equals operator=    %=   /=   //=   -=   +=   *=   **=Assignment Operators is       is  notidentity operatorinch      not inchmember Operators not     and     orlogical operators

3. Detailed examples

" "bitwise OPERATORS: operator bitwise operators by numeric values on each bit of the binary: & | ^ ~ << >>" "Print(True &True)#Bitwise & converts 10 binary to binary and then binary per bit operation 1 1 for 1 The rest is 0 .Print('2:', Bin (2)) Print('8:', Bin (8))#2 0010#8#Ten 1010#0 0000Print(2&8)Print(10&8)#| Bitwise OR as long as 1 is 1#Ten 01010#10100#11110 2+4+8+16Print(10|20)#^ xor difference is 1 the same as 0#Ten 01010#10100Print(10^20)#8 01000#11100#10100Print(8^28)#~ to reverse 0 for 1 1 for 0#001# the#4 0100#1011-5#-8 +2#Print (Bin ( -5))Print(To)#0101#1010Print(The Bin ())#010000#101111-32 +8+4+2+1Print(~16)#left shift number of moved << moving digits right shift number of moves >> move number of digits#1010#Move left 1010000Print(10<<3)#1010#Move right 0001Print(10>>3)#2^3#010# +Print(2<<2)" "------------------------------------------------------------logical operator BOOL and BOOL, BOOL or BOOL, not bool" "a= 20; B=30FL=a>10 andB<50Print(FL)Print(a>50orB>10)Print(a>10orB<50)Print( notA>10)Print( notA>30 andB>10)Print(a>20 andA<30orA<50 )#logical operator precedence not and ORPrint(a<=20 and(a<30orA<50) )" "---------------------------------------------------------------operator Extension" "a=2b=2.0Print(A isb)Print(a==b)Print("--------------------------------------------------------------------") A=0b=0a=1010888800b=1010888800Print(A isb)Print(2**8)#2^8Print(2**64) A=18446744073709551618b=18446744073709551618Print(A isb)

Operation Result:

e:\python_vs_code\directory[directory]>d://py3.6//python.exe e:/python_vs_code/directory[directory]/demo0731/py_ Typeid.pytrue2: 0B108: 0b100008303020-2-0b110-178018  Truetruetruefalsetruetruetruefalsetrue-------------------------------------------------------------------- true25618446744073709551616true

Note: In the operator: (Inverse operation: take what number, the number is negative and minus one )

On the command line > two integers greater than 28, which is two of the eight parties, ' is ' for flase, ' = = ' is True

In the script file > No matter how big the number is, true

"ispoints to memory address

= = points to the variable value "

Python Learning--operator explanation