if Statements#if语句 You can use if statements to run code if a certain condition holds. If an expression evaluates to True, some statements are carried out. Otherwise, they aren't carried out. An if statement lo
sequence is a substitute for the switch or case statements found in other languages.可以有多个elif语句，关键词elif是else if的缩简写，用于缩减语句长度。if … elif … elif … 与其他语言的switch或case语句的作用相近。if condition_1:statement_block_1 elif condition_2:statement_block_2 else:statement...
In computer programming, we use the if statement to run a block of code only when a specific condition is met. In this tutorial, we will learn about Python if...else statements with the help of examples.
If statement, without indentation (will raise an error): a =33 b =200 ifb > a: print("b is greater than a")# you will get an error Try it Yourself » Elif Theelifkeyword is Python's way of saying "if the previous conditions were not true, then try this condition". ...
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if循环格式: if condition_1: statement_block_1 elif condition_2: statement_block_2 else: statement_block_3 1. 2. 3. 4. 5. 6. 以下实例 x 为 0-99 取一个数,y 为 0-199 取一个数,如果 x>y 则输出 x, 如果 x 等于 y 则输出 x+y,否则输出y。
The “if” statement is utilized with the combination of the “OR” operator to compare the compound condition. The “OR” operator returns a true Boolean value if any operand conditions become true. Similarly, if both conditions are false, then the “else” statement/block will be executed ...
if语句 Python中if语句的一般形式如下所示: ifcondition_1: statement_block_1 elifcondition_2: statement_block_2 else: statement_block_3 l如果 "condition_1" 为 True 将执行 "statement_block_1" 块语句 l如果 "condition_1" 为False,将判断 "condition_2" ...
while loop-continuation-condition: statement(s) #eg: i = 1 while i < 10: print(i) i += 1 1. 2. 3. 4. 5. 6. 7. 循环设计策略: 确认需要循环的语句 将循环语句整合在一个循环中 编写循环继续条件并添加合适语句进行控制循环,避免无限循环 ...
比较运算符 # if语句、for循环、while循环 ### if语句 python if condition_1: statement_block_1 elif condition_2: statement_block_2 else: statement_block_3 注意加冒号,代码块缩进 if可以嵌套 for 循环 语法 for <variable> in <sequence>: <statements> else: <statements> break:(例子) sites = [...