Not Equals:a != b Less than:a < b Less than or equal to:a <= b Greater than:a > b Greater than or equal to:a >= b These conditions can be used in several ways, most commonly in "if statements" and loops. An "if statement" is written by using theifkeyword. ...
A rich comparison method may return the singleton NotImplemented By convention, False and True are returned for a successful comparison. However, these methods can return any value, so if the comparison operator is used in a Boolean context (e.g., in the condition of an if statement), Pyth...
if boolean_expression: statement(s) 注意布尔表达式后边的冒号是必须的。 2.1. 基本的 if 示例 # Basic Python If Example a =2 b=5 if a <b: print(a,'is less than',b) 执行及输出: 2.2. 多条件表达式 单个表达式里有多条件的话需要使用逻辑操作符将其分开。 # Example – Python If with multip...
Python 中用 elif 代替了else if,所以if语句的关键字为:if – elif – else。 if condition_1: statement_block_1 elif condition_2: statement_block_2 else: statement_block_3 1. 2. 3. 4. 5. 6. 流程图如下所示: 如果"condition_1" 为 True 将执行 "statement_block_1" 块语句,如果 "conditio...
...2isa prime number3isa prime number4equals2*25isa prime number6equals2*37isa prime number8equals2*49equals3*3 (Yes, this is the correct code. Look closely: theelseclause belongs to theforloop,nottheifstatement.) (是的,这是正确的代码,仔细看,else子句是属于里面的for循环的,而不是属于...
range(2, n): ... if n % x == 0: ... print(n, 'equals', x, '*', n//x)...
4.1 if Statements Perhaps the most well-known statement type is the if statement. For example: >>> x = int(input("Please enter an integer:")) Please enter an integer: 42 >>> if x < 0: x = 0 print('Negative changed to zero') ...
Nonlocal A nonlocal statement, such as nonlocal var Nonlocal_ INTERNAL: See the class Nonlocal for further information.Not A not unary operator NotEq A not equals (!=) comparison operator NotEq_ INTERNAL: See the class NotEq for further information....
In your case, you were using an if statement: result = getString(argument_x) print result # it returns "PASS" if result == "PASS": print("Result equals pass") #Add any other statements here to be executed as a result #of result == "PASS" Share Improve this answer Follow edited...
多编程语言都有一个特殊的函数，当操作系统开始运行程序时会自动执行该函数。这个函数通常被命名为main()...