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 ...
More on Python while Loop Pythonwhileloop withbreakstatement We can use abreak statementinside awhileloop to terminate the loop immediately without checking the test condition. For example, while True: user_input = input('Enter your name: ') # terminate the loop when user enters end if user...
🔹 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...
In this example, you catch any potential exceptions that can occur while writing to the file. In real-life situations, you should use a specific exception type instead of the general Exception to prevent unknown errors from passing silently. The with Statement Approach The Python with statement ...
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...
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 ...
(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...
In addition, in Python the definition line of an if/else/elif statement, a for or while loop, a function, or a class is ended by a colon. In MATLAB, the colon is not used to end the line. Consider this code example: Python 1num = 10 2 3if num == 10: 4 print("num is eq...
In Python, you can specify an else statement to a for loop or a while loop. The else block is executed if a break statement is not used.