简介:Python系列(13)—— 三元运算符 在Python中,三元运算符(Ternary Operator)是一种简洁的条件表达式,它允许我们在一行代码中执行简单的条件判断。三元运算符的格式如下: value_if_true if condition else value_if_false 如果condition为True,则整个表达式的值为value_if_true;如果condition为False,则整个表达式的...
三元运算符(Ternary Operator): 条件表达式,根据条件选择值。 python x = 10 message = "x 大于 5" if x > 5 else "x 小于等于 5" print(message) # 输出: x 大于 5 装饰器(Decorator): 修改或增强函数的行为。 python def my_decorator(func): def wrapper(): print("在函数执行之前做一些事...
字典推导式(Dictionary Comprehension) keys = ['a', 'b', 'c']values= [1,2,3]dictionary = {key:valueforkey,valueinzip(keys,values)}# 创建键值对字典 条件表达式(Conditional Expression/Ternary Operator) temperature = 25status ='cold'if temperature < 18else'hot'if temperature > 30else'moderate...
👇 1. 列表推导式(List Comprehension): 这是Python的一个超级强大的功能,能让你一行代码就生成列表,效率飞起!🚀 2. 三元运算符(Ternary Operator): 简单易懂,让你的代码更加简洁明了。🤓 3. 生成器(Generator): 对于大量数据的处理,生成器能帮你节省内存,提高效率。💻 4. 装饰器(Decorator): 能修改...
The syntax for using if-else in a list comprehension is as follows. main.py new_list=[returnAifcondition_is_metelsereturnBforiteminlist] The syntaxa if condition else bis calledthe ternary operator. main.py site='bobbyhadz.com'result='a'iflen(site)>1else'b'print(result)# 👉️ 'a...
1. If-Else 三元操作符(ternary operator) #<on True> if <Condition> else <on False>print("Yay")ifisReadyelseprint("Nope") 2. 交换(swap)两个变量值 a,b=b,a 3. 匿名函数(Lambda)过滤列表 >>>numbers=[1,2,3,4,5,6]>>>list(filter(lambdax:x%2==0,numbers)) ...
2.4 条件表达式(Ternary Operator) 结构解析: value_if_true if condition else value_if_false 对比示例: # 传统写法ifscore >=60: result ="Pass"else: result ="Fail"# 语法糖写法result ="Pass"ifscore >=60else"Fail" 嵌套使用: grade ='A'ifscore >=90else'B'ifscore >=80else'C' ...
1. 列表解析 (List Comprehension) 普通写法: nums = [1, 2, 3, 4, 5] squared = [] for n in nums: squared.append(n * n) 高级写法: squared = [n * n for n in nums] 2. 三元操作符 (Ternary Operator) 普通写法: if x > y: value = x else: value = y 高级写法: value = x ...
Slicinglst[start:stop]carves out a subsequence from the list between thestartandstopindices.You can read the detailed tutorial on the Finxter blog. The ternary operatorx if y else zreturns the valuexifyisTrue. In all other cases, it returns the valuez.You can read the detailed tutorial ...
6. List Comprehensions and the Ternary Operator List comprehension is very much common when working with python code. The Python ternary operator can be used within list comprehensions to filter and transform data, resulting in concise and expressive code that is optimized for performance. You can ...