if condition_1: statement_block_1elif condition_2: statement_block_2else: statement_block_3 如果 "condition_1" 为 True 将执行 "statement_block_1" 块语句 如果 "condition_1" 为False，将判断 "condition_2"如果"condition_2" 为 True 将执行 "statement_block_2" 块语句 如果 "condition...
<statement> 如果条件语句<condition>为真,执行if语句块,如果<condition>为假,执行else语句块 代码语言:javascript 复制 i = 2 if i == 1: print(True) else: print(False) 4.3 多分支 if多分支由 if-elif-else 组成,其中 elif 相当于 else if if <condition1>: 代码语言:txt 复制 <case1 state...
Structural pattern matching has been added in the form of a match statement and case statements of patterns with associated actions. Patterns consist of sequences, mappings, primitive data types as well as class instances. Pattern matching enables programs to extract information from complex data type...
In this article, there is much emphasis on the switch case statement because there are many factors that clarify why the switch case statement has the upper hand in comparison to the if-else statement. The factors are: In comparison with the if-else ladder, a switch statement works much fas...
While the match-case statement is a powerful tool, its impact on the performance of Python code, particularly in large-scale applications, should be considered. In scenarios with a large number of cases, or complex pattern matching, performance can potentially be impacted. Profiling and testing yo...
if expression1: statement(s) if expression2: statement(s) elif expression3: statement(s) else statement(s) elif expression4: statement(s) else: statement(s) Python 循环while 循环while 循环语法如下:while expression: statement(s) 数据流图:示例:...
但是，在 Python 中，我们看不到 switch-case 或者相近的语法结构，这是为什么呢？2、Python 为什么不支持 switch?官方文档中有一篇 FAQ 包含了这个问题：Why isn’t there a switch or case statement in Python?FAQ 即 Frequently Asked Questions 的缩写，表示常见问题，官方列了 27 个常见问题，完整清单在此...
Python3 条件控制Python 条件语句是通过一条或多条语句的执行结果(True 或者 False)来决定执行的代码块。 可以通过下图来简单了解条件语句的执行过程:代码执行过程:if 语句Python中if语句的一般形式如下所示:if condition_1: statement_block_1 elif condition_2: statement_block_2 else: statement_block_3...
Python will return your statement "Hello World". To exit Python, you can enter exit(), quit(), or select Ctrl-Z.Install Git (optional)If you plan to collaborate with others on your Python code, or host your project on an open-source site (like GitHub), VS Code supports version ...
TipDebugging information can also be seen by hovering over code, such as variables. In the case ofmsg, hovering over the variable will display the stringRoll a dice!in a box above the variable. You can also work with variables in theDebug Console(If you don't see it, selectDebug Console...