私有变量: “Private” instance variables that cannot be accessed except from inside an object don’t exist in Python. However, there is a convention that is followed by most Python code: a name prefixed with an underscore (e.g. _spam) should be treated as a non-public part of the API...
1. Python Variable Naming Convention While Python is flexible with variable names, there are a few rules and conventions: Variable names must start with a letter (a-z, A-Z) or an underscore (_). Variable names can contain letters, numbers, and underscores. Variable names are case-sensitive...
Public and Non-Public Variable Names A widely used naming convention for variables in Python is to use a leading underscore when you need to communicate that a given variable is what Python defines as non-public. A non-public variable is a variable that shouldn’t be used outside its defini...
1、使用有意义的变量名（Use meaningful variable names）# Bad codex = 10y = 20# Good codestudent_count = 10teacher_count = 20 "Use meaningful variable names" 是 Python 中的一条编码原则，指的是使用有意义的变量名。中文可以翻译为“使用有意义的变量名”。在编写代码时，使用有意义的变量名可以使代...
Avoid unnecessarily long variable names (e.g., Roll_no_of_a_student is too long). Be consistent in your naming convention: roll_no or RollNo, but not both. Start variable names with an underscore (_) when you need a special case or private variables.Python...
Float variable Complex type String variable List type variable Get the data type of variable Delete a variable Variable’s case-sensitive Constant Assigning a value to a constant in Python Rules and naming convention for variables and constants ...
局部名称(local names),函数中定义的名称,记录了函数的变量,包括函数的参数和局部定义的变量。(类中定义的也是) 命名空间查找顺序:假设我们要使用变量 runoob,则 Python 的查找顺序为:局部的命名空间去 -> 全局命名空间 -> 内置命名空间。 命名空间的生命周期:命名空间的生命周期取决于对象的作用域,如果对象执行完...
Because exceptions should be classes, the class naming convention applies here. However, you should use the suffix "Error" on your exception names (if the exception actually is an error). Global Variable Names (Let's hope that these variables are meant for use inside one module ...
ConventionExampleMeaning Single leading underscore _variable Indicates that the name is meant for internal use only Single trailing underscore class_ Avoids naming conflicts with Python keywords and built-in names Double leading underscore __attribute Triggers name mangling in the context of Python classe...
Almost without exception, class names use the CapWords convention.Classes for internal use have a leading underscore in addition. 1. 2. 类:几乎毫无例外的,类名都使用首字母大写开头(Pascal命名风格)的规范。使用_单下划线开头的类名为内部使用,上面说的from M import *默认不被告导入的情况。