Cloud computing Python Automation: An explanation of operator code

Cloud computing Python Automation: An explanation of the operator code:

Logical operators:

The following assumes that the variable A is ten and B is 20:

and

X and Y

Boolean "and"-if x is False,x and y returns FALSE, otherwise it returns the computed value of Y.

(A and B) returns 20.

Or

X or Y

Boolean "or"-if X is non-0, it returns the value of x, otherwise it returns the computed value of Y.

(A or B) returns 10.

Not

Not X

Boolean "Non"-returns False if X is True. If X is False, it returns TRUE.

Not (A and B) returns False

>> 1>2 and 2<3

False

>> 3>2 and 2<3

True

Bitwise operators:

A bitwise operator computes a number as a binary. The bitwise algorithms in Python are as follows:

The variable a in the following table is 60,b 13.

& Bitwise-AND Operator:

The two values that participate in the operation, if two corresponding bits are 1, the result of that bit is 1, otherwise 0

(A & B) Output result 12, binary interpretation: 0000 1100

| Bitwise OR Operator:

As long as the corresponding two binary has one for 1 o'clock, the result bit is 1.

(A | b) output result 61, Binary interpretation: 0011 1101

^ Bitwise XOR OR Operator:

When two corresponding binary differences, the result is 1

(a ^ b) output result 49, binary interpretation: 0011 0001

~ Bitwise INVERSE Operator:

Each bits of the data is reversed, which turns 1 to 0 and 0 to 1

(~a) Output result-61, Binary interpretation: 1100 0011, in the complement form of a signed binary number.

<< left move operator:

The operands of the operands all move left several bits, and the number of digits to the right of "<<" specifies the number of bits moved, and the low is 0.

A << 2 output results 240, binary interpretation: 1111 0000

> Right Move Operator:

Move all the binary of the left operand of ">>" to the right of several bits

">>" the number to the right specifies the number of bits moved, the high 0, the low discard

A >> 2 output results 15, binary interpretation: 0000 1111

Note: There is a problem in the calculation results, do not change the picture, according to the actual results to

Member operators:

In addition to some of the above operators, Python also supports member operators, which contain a series of members, including strings, lists, or tuples.

Inch

Returns False if the value found in the specified sequence returns True.

x in the y sequence, if X returns True in the y sequence.

Not in

Returns True if no value is found in the specified sequence, otherwise False.

X is not in the Y sequence if x does not return True in the y sequence.

Identity operator:

The identity operator is used to compare the storage units of two objects

Is

is to determine whether two identifiers are referenced from an object

X is y, if ID (x) equals ID (y), is returns result 1

is not

Is does not determine whether two identifiers are referenced from different objects

X is not y if the ID (x) does not equal the ID (y). is not returning result 1

Operator Precedence:

The following table lists all the operators from highest to lowest priority:

**

Index (highest priority)

~ + -

Bitwise flip, unary Plus and minus (the last two methods are called [email protected] and [email protected])

• / % //

• Multiply, divide, modulo, and divide

• -

Addition subtraction

> <<

Shift right, left shift operator

&

Bit ' and '

^

Bitwise operators

<= < > >=

Comparison operators

<> = = =

equals operator

= %= /= //= -= += *= **=

Assignment operators

Is isn't

Identity operator

In No in

Member operators

Not OR and

logical operators

Besides, there is one operator. Lowest precedence: Lambada

Cloud computing Python Automation: An explanation of operator code