Cloud computing Python Automation: Operators and expressions

Operator is used to execute program code operations, and operations are performed on more than one operand item. For example: 2+3, whose operands are 2 and 3, while the operator is "+".

What is an expression:

An expression is a combination of numbers, operators, numeric grouping symbols (parentheses), free variables, and constraint variables that can be obtained by means of a meaningful arrangement of values. A constraint variable is assigned a value in an expression, while a free variable can specify a value outside of an expression.

Python operator Classifications:

Arithmetic operators

Compare (relational) operators

Assignment operators

logical operators

Bitwise operators

Member operators

Identity operator

Arithmetic operators:

The following assumes that the variable A is 10 and the variable B is 20:

+: Add-two objects added.

Example: A + B output result 30

-: minus-gets a negative number or one count minus the other.

Example: A-B output result-10

*: Multiply by two numbers or return a string that is repeated several times.

Example: A * b output result 200 |

/: Except-X divided by Y.

Example: b/a output result 2

%: Modulo-Returns the remainder of the division.

Example: b% A output result 0

* *: Power-Returns the Y power of X.

For example: A**b is 10 of the 20-time side, the output result 100000000000000000000

: Take division-Returns the integer part of the quotient

For example: 9//2 output result 4, 9.0//2.0 output 4.0

Attention:

>> 5/2//No decimal place when the division operation gets an integer

2

>> 5.0/2

2.5

Compare (relational) operators:

The following assumes that the variable A is 10 and the variable B is 20:

| == | Equals-compares objects for equality | (A = = B) returns FALSE.

| != | Not equal-compares two objects for unequal | (A! = B) returns TRUE.

| <> | Not equal-compares two objects for unequal | (a <> B) returns True. This operator is similar to! =.

| > | Greater than-returns whether x is greater than Y | (A > B) returns FALSE.

| < | Less-Returns whether x is less than Y. All comparison operators return 1 for true, and return 0 for false. This distinction is equivalent to the special variable true and false. Note that these variable names are capitalized. | (A < B) returns TRUE.

| >= | Greater than or equal-returns whether X is greater than or equal to Y. | (a >= B) returns FALSE.

| <= | Less than or equal-returns whether X is less than or equal to Y. | (a <= B) returns True.

Assignment operators:

The following assumes that the variable A is 10 and the variable B is 20:

| = | Simple assignment Operator | c = A + B assigns the result of the operation of A + B to c

| += | Addition Assignment Operator | c + = A is equivalent to C = C + A

| -= | Subtraction Assignment Operator | C-= A is equivalent to C = c-a

| = | multiplication Assignment operator | c = A is equivalent to C = c * A

| /= | Division Assignment Operator | C/= A is equivalent to C = c/a

| %= | Modulo assignment Operator | C%= A is equivalent to C = c% A

| =| Power Assignment operator | c = A is equivalent to C = c * * A

| //=| Take integer assignment operator | C//= A is equivalent to C = c//A

Cloud computing Python Automation: Operators and expressions