For example, pure assignment statements don’t return any value, as you’ll learn in a moment. Therefore, they’re not expressions. The assignment operator is a special operator that doesn’t create an expression but a statement. Note: Since version 3.8, Python also has what it calls ...
# 代码文件: 运算符/assignment_operator.py a = 1 b = 2 a += b # 相当于a=a+b print("a + b = {0}".format(a)) # a=1,b=2 运算结果为:3 a += b + 3 # 相当于a=a+b+3 print("a + b + 3 = {0}".format(a)) # a=3,b=2 运算结果为:8 a -= b; # 相当于a=a...
The assignment operator in Python is used to assign values to variables.Operators Function Example Equal to(=) Assign a value to the variable x = 3 Addition Assignment Operator (+=) Subtracts the value and then assign it to the variable x += 3 (x = x + 3) Subtraction Assignment ...
条件表达式(Ternary Operator) 条件表达式允许你在一行代码中实现简单的条件判断。 python复制代码 value_if_true if condition else value_if_false 1. 2. 示例: python复制代码 max_value = a if a > b else b # 如果a大于b,则max_value为a,否则为b 1. 2. 多重赋值(Multiple Assignment) 多重赋值允许...
Example: Ternary Operators in Python Python 1 2 3 4 a, b = 10, 20 min_value = a if a < b else b print(min_value) Output: Augmented Assignment Operators The augmented assignment operators in Python are a combination of arithmetic operators and assignment operators that are used to impro...
1. Relational operators: can be used together 2.不允许使用赋值运算符= 2. The assignment operator = is not allowed 3. 逻辑运算符and和or具备惰性求值的特征 3. The logical operators and and or have the characteristics of lazy evaluation 02选择结构 单分支、多分支、跳转分支、嵌套分支 Single branch...
# Examples of Assignment operators a=12 print(a) # 12 a += 2 print(a) # 14 a -= 2 print(a) # 12 a *=2 print(a) # 24 a **=2 print(a) # 576 逻辑运算符用于执行诸如And, Or和Not的逻辑运算。请参见下面的示例。 # Logical operator examples ...
Python 有一种叫做增强算术赋值(augmented arithmetic assignment)的东西。可能你不熟悉这个叫法,其实就是在做数学运算的同时进行赋值,例如 a -= b 就是减法的增强算术赋值。 增强赋值是在 Python 2.0 版本中 加入进来的。(译注:在 PEP-203 中引入)
Python's walrus operator 4 mins Assignment isn't just about the equals sign 3 mins Mutating with an assignment statement 2 mins Augmented assignments mutate 3 mins The assignments hiding in your functions 3 mins Mutable tuples 3 mins When is equality the same as identity?
Instead, the assignment operator creates or updates variables. Because of this, the operator can’t be part of an expression. Since Python 3.8, you have access to a new operator that allows for a new type of assignment. This new assignment is called assignment expression or named expression....