What is a variableIn my personal understanding, it is an identifier (pointing to a memory address) whose stored value can be modified and should be modifiable at will.The existence of variables is key to the ability of programming languages to execute the same program repeatedly based on different user inputs and produce different responses, which is a hallmark of their efficiency.Conditions that variables in Python must meetIn Python, the definition of a variable does not require a type specification, as it is an interpreted dynamic language.The type of a variable is automatically inferred and managed based on the variable’s value during program execution.However, the following conditions must be met when defining a variable in Python:1. In Python, there is no such thing as a declaration of a variable (declaring without assigning a value); otherwise, the Python interpreter cannot infer the variable’s type;2. A Python variable must be explicitly assigned a value at the time of declaration;Identifiers with Chinese namesSince Python 3, variable names can include Chinese identifiers.Example code:
>>> a = 1
>>> a1
>>> b = 0.1
>>> b0.1
>>> c = "hello"
>>> c
'hello'
>>> 公众号名称 = "全栈开发助手"
>>> 公众号名称
'全栈开发助手'Disclaimer: The content is for reference only and does not guarantee accuracy!