Enter a number: 0 Zero A number is positive if it is greater than zero. We check this in the expression of if. If it is False, the number will either be zero or negative. This is also tested in subsequent expression.Also Read: Python Program to Check if a Number is Odd or Even ...
以下是一个示例来说明多个 if else 的链式用法。 defcheck_number(number):ifnumber==0:return"Zero"elifnumber>0:return"Positive"else:return"Negative"print(check_number(0))# 输出 Zeroprint(check_number(10))# 输出 Positiveprint(check_number(-5))# 输出 Negative 1. 2. 3. 4. 5. 6. 7. 8....
根据人物的水平方向速度x_vel 更新人物的X轴位置,同时人物的X轴位置不能超出游戏地图的X轴范围,然后调用check_player_x_collisions函数进行水平方向的碰撞检测。 根据人物的水平方向速度x_vel 更新人物的X轴位置,同时人物的X轴位置不能超出游戏地图的X轴范围,然后调用check_player_x_collisions函数进行水平方向的碰撞...
Range of Negative Indexes Specify negative indexes if you want to start the search from the end of the tuple: Example This example returns the items from index -4 (included) to index -1 (excluded) thistuple = ("apple","banana","cherry","orange","kiwi","melon","mango") ...
def check_number(number): if number > 0: return "Positive" elif number == 0: return "Zero" return "Negative" print(check_number(1)) # Positive ▍38、使用sorted()检查2个字符串是否为相同 def check_if_anagram(first_word, second_word): first_word = first_word.lower() second_word = ...
在这个例子中,我们将elif语句改为了if语句。这样一来,无论x的值是多少,所有的条件都会被逐个判断。如果x大于0,则输出"x is positive";如果x小于0,则输出"x is negative";如果所有条件都不满足,则输出"x is zero"。 综上所述,Python中的if和elif语句在满足第一个条件时将终止后续条件的判断。如果我们希望...
异常检测(Anomaly detection)是机器学习的常见应用,其目标是识别数据集中的异常或不寻常模式。尽管通常被归类为非监督学习问题,异常检测却具有与监督学习相似的特征。在异常检测中,我们通常处理的是未标记的数据,即没有明确的标签指示哪些样本是异常的。相反,算法需要根据数据本身的特征来确定异常。这使得异常检测成为一项...
What if you want to print the last character of a string but you don’t know how long it is?You can do that usingnegative indexes. In the example above, we don’t know the length of the string, but we know that the word ‘text’ plus the exclamation sign take five indices, so ...
'_has_negative_number_optionals', '_match_argument', '_match_arguments_partial', '_mutually_exclusive_groups', '_negative_number_matcher', '_option_string_actions', '_optionals', '_parse_known_args', '_parse_optional', '_pop_action_class', '_positionals', '_print_message', '_read_...
if/else类似于其他编程语言中的构造。 from __future__ import print_function i = int(system.ui.query_string("Please enter an integral number...")) if i < 0: print("Your number was negative.") elif i > 0: print("Your number was positive.") ...