importselect# 创建一个select对象selector=select.select([sys.stdin],[],[])# 循环等待输入whileTrue:# 等待输入ready_to_read,_,_=selector.select()# 如果有数据可读ifready_to_read:# 读取输入command=raw_input().lower()# 处理输入ifcommand=="commands":print'"look around"'print'...
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...
The range() function is typically used with a while loop to repeat a block of code for all values within a range. Let’s discuss different scenarios of using the range() function with a while loop in Python. By specifying start, stop, and step parameters, By excluding the start and ste...
There are many different ways to write a loop. We will focus on a WHILE loop and how to use its python. Normally, All Programming Languages using different types of looping statements like for, while and do-while. These types of looping statements are used for checking the conditions repeate...
A while statement in python sets aside a block of code that is to be executed repeatedly until a condition is falsified. The structure of a while loop allows the total number of iterations, or repetitions, to be unknown from the start. Examples of use cases might be repeatedly obtaining use...
Python While Loop Examples Let us take a look at a few examples of while loop in Python so that you can explore its use easily in your program. 1. Printing a range of numbers in Python number = 0 while number <=5: print(number) ...
Python while loop: Loops are used to repeatedly execute block of program statements. The basic loop structure in Python is while loop. See the syntax and various examples.
ExampleGet your own Python Server Print i as long as i is less than 6: i =1 whilei <6: print(i) i +=1 Try it Yourself » Note:remember to increment i, or else the loop will continue forever. Thewhileloop requires relevant variables to be ready, in this example we need to def...
loop_vars一个(可能是嵌套的)元组、namedtuple 或 numpy 数组、Tensor和TensorArray对象的列表。 shape_invariants循环变量的形状不变量。 parallel_iterations允许并行运行的迭代次数。它必须是一个正整数。 back_prop(可选)已弃用。 False 禁用对反向传播的支持。更喜欢使用tf.stop_gradient。
如果你對for迴圈或if陳述句不熟悉,可以閱讀〈Python for 迴圈(loop)的基本認識與7種操作〉、〈Python if 陳述句的基礎與3種操作〉。 Python while 迴圈句基本認識 先來看一個簡單的while迴圈。 例子是這樣的,你要用Python印出1到100。你可以設定一個變數i,並在while後頭陳述符合需求的條件,條件是只要i小於...