这里,condition and 'success'当condition为真时返回'success',否则因短路特性不继续评估or后面的部分 ,直接返回'failure'。 3.3 复杂逻辑简化实例 Python中的三元条件表达式(也称为条件运算符)x if condition else y提供了另一种编写简洁条件逻辑的方式。结合and和or,可以进一步优化条件表达式,使其更加高效和清晰。比...
在Python中,if语句的基本语法如下: ifcondition:# 执行语句else:# 执行语句 1. 2. 3. 4. 其中condition为要判断的条件,如果条件成立,则执行if下面的代码块,否则执行else下面的代码块。而在一些情况下,我们可能需要同时判断多个条件,这时就可以使用or关键字。 or关键字用于连接两个条件,只要两者之一成立,整个条件...
if condition_expression1 and condition_expression2: 或者是: if condition_expression1 or condition_expression2: 这种简单的我们都会,但是他还有更加高级的用法哦! 1.1 多个and并列 在python中,and自左向右扫描布尔表达式,如果所有值为真,则返回最后一个为真的表达式,如果为假,则返回第一个为假的表达式, 一般的...
Python 中的循环语句有 for 和 while。 Python 循环语句的控制结构图如下所示: while循环 while 语句的一般形式: while 判断条件(condition): 执行语句(statements)…… 同样需要注意冒号和缩进。另外,在 Python 中没有 do..while 循环。 以下实例使用了 while 来计算 1 到 100 的总和: #!/usr/bin/env ...
def elements_are_in_stable_condition(element1, element2): def wait_for_condition(driver): attribute = driver.find_element(*element1).get_attribute('my_condition') if attribute: return True else: return driver.find_element(*element2).is_enabled() return wait_for_condition WebDriverWait(driver...
Any object can be tested for truth value, for use in an if or while condition or as operand of the Boolean operations below. The following values are considered false: None False zero of any numeric type, for example, 0, 0L, 0.0, 0j. ...
关于真值的判断规则,在 python 的文档中有说明 Any object can be tested for truth value, for use in aniforwhilecondition or as operand of the Boolean operations below. By default, an object is considered true unless its class defines either abool()method that returns False or alen() method ...
1498.Number-of-Subsequences-That-Satisfy-the-Given-Sum-Condition (H-) 1574.Shortest-Subarray-to-be-Removed-to-Make-Array-Sorted (H-) 1580.Put-Boxes-Into-the-Warehouse-II (H-) 1687.Delivering-Boxes-from-Storage-to-Ports (H) 1793.Maximum-Score-of-a-Good-Subarray (M+) 1989.Maximum-Number...
Since the value in cell B2 is not "Water" the first condition is FALSE.Since the value in cell C2 is less than 60 the second condition is also FALSE.At least one condition need to be TRUE for the OR function to return TRUE.Note: Text values needs to be in quotes: " "The function...
Nuitka isthePython compiler. It is written in Python. It is a seamless replacement or extension to the Python interpreter and compileseveryconstruct that CPython 2.6, 2.7, 3.3, 3.4, 3.5, 3.6, and 3.7 have, when itself run with that Python version. ...