What are arithmetic operators, assignment operators and compound operators in Python?

This article brings you an introduction to what arithmetic operators, assignment operators and compound operators are in Python. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Arithmetic operators

Common arithmetic operators are:

The addition operator

print(1 + 2);   // 3
print('1' + '2'); //12

can not only add two numbers, but also connect two strings

- Subtraction operator

print(4 - 2)    // 2
print(4 - 12)    // -8

* Multiplication operator

print(5 * 6);     //30

/ Division operator (the denominator cannot be zero)

print(5 / 2);      //2.5
print(5 / 0)    //错误

As you can see from the second code, the denominator cannot be 0　

** Power operation Symbol

print(2 ** 3);   //8　

// Integer division operator

print(5.5 // 2);  //2.0　　

% Modulo operator ( Remainder operator)

print(5 % 2);    //1

Compound operator

Common compound operators are:

Additional assignment operator=

a = 5;
a +=2   // a = a + 2
print(a);   // 7

Subtractive assignment operator-=

a = 5;
a -=2　　//a = a - 2
print(a); // 3

Multiplication assignment operator*=

a = 5;
a *=2
print(a);   // 10

Division assignment operator/=

a = 5;
a /=2
print(a);    // 2.5

Remainder assignment operator%=

a = 5;
a %=2
print(a);    // 1

Power assignment operator **=

a = 5;
a **=2
print(a);  // 25

Round assignment operator//=

a = 5;
a //=2
print(a);   // 2

Assignment operator

You can use chained assignment

a = b = c = 10;
print(a,b,c);     // 10  10  10

Note: You must consider the issue of priority. The following examples must take into account the parentheses. Use

num = (5 - 4) + 1 * 7 / 2;
print(num);     // 4.5

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