Python3基础条件控制 if ---elif---else 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: if 语句 Python中if语句的一般形式如下所示: if condition_1: statement_block_1elif condition
In this tutorial, we shall focus on Python if, else and elif statement. 在本教程中,我们将专注于Python的if,else和elif语句。 Decisions are one of the most important feature of any computer program. It basically helps to systematically and logically execute the program based upon the input of...
Case 语句类似于 if 语句，但带有多个 elif。bash 脚本中的 Case 语句展开表达式，然后尝试找到与所有模...
1) 忘记在 if , elif , else , for , while , class , def 声明末尾添加 :(导致 SyntaxError :invalid syntax ) 该错误将发生 当初学 Python 时,想要弄懂 Python 的错误信息的含义可能有点复杂。这里列出了常见的的一些让你程序 crash 的运行时错误。 1)忘记在if,elif,else,for,while,class,def声明末尾...
1、忘记在 if,for,def,elif,else,class 等声明末尾加 :会导致SyntaxError :invalid syntax如下: ifspam==42 print('Hello!') 2、使用=而不是==也会导致SyntaxError: invalid syntax =是赋值操作符,而==是等于比较操作 该错误发生在如下代码中:
marks=int(input("Enter your marks: "))ifmarks>=90:print("Grade: A")elifmarks>=75:print("Grade: B")elifmarks>=60:print("Grade: C")else:print("Grade: F") Copy One-Line If/Else Statements (Ternary Operator) In Python, you can use a concise syntax for simpleif/elsestatements. This...
if …elif…elif…fi 语法：if [条件判断式1]；then 当条件判断式1成立时，可以进行的命令工作内容；...
#if and #elif directive syntax >>-#--+-if---+--constant_expression--->< '-elif-' All macros are expanded, except macros that are the operand of adefinedoperator. Any uses of thedefinedoperator are processed, and all remaining keywords and identifiers are replaced with the token0...
Python if…elif…else Statement Theif...elsestatement is used to execute a block of code among two alternatives. However, if we need to make a choice between more than two alternatives, we use theif...elif...elsestatement. Syntax
#if and #elif directive syntax .---. V | >>-#--+-if---+--constant_expression---token_sequence-+--->< '-elif-' If the constant expression evaluates to a nonzero value, the lines of code that immediately follow the condition are passed on to the compiler.If the expression evalua...