1.如果else语句在一个for循环中使用,当循环已经完成(用尽时)迭代列表执行else语句。 2.如果else语句用在while循环中,当条件变为 false,则执行 else 语句。 下面的例子说明了,只要它小于5,while语句打印这些数值,否则else语句被执行。 #!/usr/bin/python3 count = 0 while count < 5: print (count, " is ...
Here, the condition of the while loop is alwaysTrue. However, if the user entersend, the loop termiantes because of thebreakstatement. Pythonwhileloop with anelseclause In Python, awhileloop can have an optionalelseclause - that is executed once the loop condition isFalse. For example, coun...
🔹 Same output with the first one but different approach 🔹 In this case, the condition is in the while statement, and once i becomes greater or equal to 4, the while loop will stop. For better understanding, I adjusted the value of i so it will be the same for both ex...
number = int(input('Enter a number: '))# check if number is greater than 0ifnumber >0:print(f'{number}is a positive number.')print('A statement outside the if statement.') Run Code Sample Output 1 Enter a number: 10 10 is a positive number. A statement outside the if statement...
Nested while Loop in Python In Python, The while loop statement repeatedly executes a code block while a particular condition is true. We use w a while loop when number iteration is not fixed. In this section, we will see how to use a while loop inside another while loop. ...
在Python 中没有 do..while 的循环 代码语言:javascript 代码运行次数:0 运行 AI代码解释 count = 0 while count < 5: print (count, " 小于 5") count = count + 1 else: print (count, " 大于或等于 5") for..in 循环 for..in 适用于 list/ dict/ set 数据类型,如果需要遍历数字序列,我们也...
The next two tutorials will present two new control structures: the while statement and the for statement. These structures facilitate iteration, execution of a statement or block of statements repeatedly. Take the Quiz: Test your knowledge with our interactive “Python Conditional Statements” quiz....
(self)| Delete the turtle's drawings from the screen. Do not move turtle.|| No arguments.|| Delete the turtle's drawings from the screen. Do not move turtle.| State and position of the turtle as well as drawings of other| turtles are not affected.|| Examples (for a Turtle instance...
While this may seem like a fine point, the short-circuit behavior leads to a clever technique called theguardian pattern. Consider the following code sequence in the Python interpreter: >>> x = 6 >>> y = 2 >>> x >= 2 and (x/y) > 2 ...
Octave /Matlab--Control Statements:for,while, if statement---Coursera ML笔记 >> v = zeros(10,1) v = 0 0 0 0 0 0 0 0 0 0 >> for i=1:10; v(i) = 2^i; end; >> v v = 2 4 8 16 32 64 128 256 512 1024 >> indices = 1:10; ...