How to arrange python operator precedence from high to low

Python operator precedence from high to low is bracket operator (()), power operator (**), unary operator (,-), multiplication (*), division (/), Modulo (%), integer division (//), addition ( ), subtraction (-), comparison operators (<, >, <=, >=, ==, !=), logical operators ( and, or, not), assignment operators (=, =, -=, *=, /=, %=, //=, **=).

Operating system for this tutorial: Windows 10 system, Python version 3.11.4, Dell G3 computer.

Python is a widely used high-level programming language that is easy to learn and powerful. In Python, operators are symbols used to perform various mathematical and logical operations. Different operators have different precedence, which determines the order in which they are evaluated in an expression. This article will introduce the precedence of operators in Python, from high to low.

1. Bracket operator (()): The bracket operator has the highest precedence and is used to change the order of evaluation of expressions. Expressions within parentheses will be evaluated first.

2. Power operator (**): The power operator is used to calculate the power of a number. It has higher precedence, so exponentiation operations in an expression will occur before other operations.

3. Unary operator ( , -): Unary operator is used to operate on a single operand. The plus sign ( ) is used to return the positive value of the operand, and the minus sign (-) is used to return the negative value of the operand.

4. Multiplication (*), division (/), modulo (%), and division (//): The multiplication, division, modulo, and division operators have the same precedence, and they are ordered from left to right. Calculations are performed in order to the right. The multiplication operator is used to calculate the product of two numbers, the division operator is used to calculate the quotient of two numbers, the modulo operator is used to calculate the remainder of two numbers, and the integer division operator is used to calculate the integer quotient of two numbers.

5. Addition ( ), subtraction (-): The addition and subtraction operators have the same precedence, and they are calculated in order from left to right. The addition operator is used to calculate the sum of two numbers, and the subtraction operator is used to calculate the difference between two numbers.

6. Comparison operators (<, >, <=, >=, ==, !=): Comparison operators are used to compare the size of two numbers or the equality of two objects sex. They have the same priority and are evaluated from left to right.

7. Logical operators (and, or, not): Logical operators are used to combine and operate Boolean values. They have different precedence, the not operator has the highest precedence, followed by the and operator and finally the or operator.

8. Assignment operators (=, =, -=, *=, /=, %=, //=, **=): Assignment operators are used to assign values ​​to variables. They have the lowest priority and are evaluated from right to left.

By understanding the precedence of Python operators, we can better understand and grasp the order in which expressions are evaluated. This is very important for writing complex programs and solving mathematical problems. In practical applications, we can use parentheses as needed to explicitly specify the order of operations to avoid confusion and errors.

To summarize, the precedence of Python operators from high to low is: bracket operator (()), power operator (**), unary operator (,-), multiplication (*) , division (/), modulo (%), integer division (//), addition ( ), subtraction (-), comparison operators (<, >, <=, >=, ==, != ), logical operators (and, or, not), assignment operators (=, =, -=, *=, /=, %=, //=, **=).

When writing code, we should reasonably arrange the calculation order of expressions according to the precedence of operators to ensure correct results. At the same time, we can also use parentheses to clearly specify the order of operations, making the code clearer and easier to understand.

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