How to define variables in python

Variable is a new knowledge point that you will come into contact with when you first learn python, and it is also a concept that you need to be familiar with. Python is a dynamically typed language. Different types of values ​​can be bound during the execution of assignment. This process is called variable assignment operation. The assignment also determines the variable type.

What is a variable

A lot of data will be used in the python learning process. In order to facilitate the operation, these data need to be represented by a simple name for convenience. Referenced in the following procedure. A variable is a name that represents a certain data (value).

How to define the operation of python variable assignment

The variable definition method is very simple:
>>> x = 5
This operation The process is assignment, which means assigning the integer number 5 to the variable x, and using the equal sign to connect the variable name and value. You can then use this new variable in expressions.
>>> References its type.

Variable naming convention

1. Variable names can include letters, numbers, and underscores, but numbers cannot be the beginning. For example: name1 is a legal variable name, but 1name is not. 2. System keywords cannot be used as variable names.

3. Except for underscores, other symbols cannot be used as variable names.

4. Python variable names are case-sensitive, for example: name and Name are two variable names, not the same variable.


Related learning recommendations:

python tutorial

The above is the detailed content of How to define variables in python. For more information, please follow other related articles on the PHP Chinese website!