If the condition is true, then the loop executes. Otherwise, it terminates. while loops are useful when the number of iterations is unknown, such as waiting for a condition to change or continuously processing
while loop. First, we will start this while loop tutorial by introducing its basics, key features, and syntax, and then we will proceed to its overall working with practical examples, and advanced concepts like state machines, exception handling, and file handling using while loops in Python. ...
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...
Explore how to emulate a "do-while" loop in Python with our short tutorial. Plus discover how to use it in data science tasks.
The Python while loop can be used to execute a block of code for as long as a certain condition is fulfilled. While loops are primarily used in Python when the number of iterations can’t be determined at the time of writing the code. Keep reading to find out how the Python while loop...
In Python, a basic while loop looks like this: while[a conditionisTrue]: [do something] The condition we provide to the while statement is the controlling expression, our loop will run until the controlling statement is no longer true. ...
we are all set to move ahead to the next and probably the only other important loop in Python:python while loop. Since this is also a loop, the work needs no introduction in this post. If you are unaware, I highly recommend going through thepython "for" loopsand brief yourselves with ...
2. Using range() in while loop You can use therangefunction in awhileloop in Python to repeat a block of code a specific number of times. Therangefunction generates a sequence of numbers, starting from0by default, and increments by1(also by default), and stops before a specified number...
对于上面的求等差数列之和的操作,借助于 Python 内置的sum函数,可以获得远大于for或while循环的执行效率。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 importtimeit defwhile_loop(n=100_000_000):i=0s=0whilei<n:s+=i i+=1returns deffor_loop(n=100_000_000):s=0foriinrange(n):s+=ire...
0 1 1 2 3 5 8 13 0 1 1 2 3 5 8 13 Element #1: 0 Element #2: 1 Element #3: 1 Element #4: 2 Element #5: 3 Element #6: 5 Element #7: 8 Element #8: 13 Number of elements in the array: 8 更多foreach 内容可以参考:C# 中 foreach 遍历的用法 ...