#PYTHON WHILE LOOP CODE#
They are used when there is a requirement for repeating a specific block of code or set of statements more than once. Loops are an indispensable part of learning Python or for that matter, any programming language.
Using the Else Statement With the While Loop. We will get back to you as soon as possible. Have any questions? Mention them in the comments section. To master your skills enroll in Edureka’s python certification program and kickstart your learning. Python programming language makes it easy to work with fundamental concepts for its ease of access. For example- using a while loop for a bank data, where we will only proceed if the test expression is satisfied which in this case can be any statistical value. While loop plays an important when we have a test expression which can be tested in the beginning of the loop. In this article we have discussed the concept of while loop in python with various examples. Lets take another example using the conditional and control statements as well. It is a classic example of using a nested loop. In this example, we have two variables i and j which are used in different test expressions. To understand this lets take a look at an example: It may go on for as many times a user requires or declares it in the program. There is no particular limit for number of loops in a nested while loop. If a while loop consists of another while loop we can call it a nested while loop. This program will run infinite iterations, unless we press ctrl+c or put a control statement in the loop. This may come as a surprise but it has its own advantages and disadvantages as well.įor instance, if we do not specify a increment operator for the variable in the test expression, the loop will never stop meaning it will execute infinite times. Infinite While LoopĪn infinite while loop executes infinite times, which means theoretically the execution never stops. For more complex decision making problems we can use conditional statements in a while loop where a test expression will be declared in the beginning. This is a simple example where we have used conditional if and else statements in a program. As soon as a break statement is encountered in a loop, the execution skips the rest of the iterations and moves out of the loop. Python Control Statements In A While Loopīreak statement in python is used to skip the entire execution of the block in which it is encountered. Lets take a look at how we can use these control statements in a while loop. To control the flow in the loop, various control statements like break and continue can be used in the while loop. As soon as the test expression is false, the execution skips the while loop and moves to the next statements in the program. The execution starts and checks whether the test expression is true, when the test expression is true it enters the while loop and executes the statements inside the while loop. Take a look at the syntax of while loop in python. In case of a while loop a user does not know beforehand how many iterations are going to take place. Python Control Statements In A While LoopĪ while loop in python is used to iterate over a block of code or statements as long as the test expression is true. Following are the topics discussed in this blog: 
In this blog we will discuss the concept of while loop in python with various examples. It saves a lot of effort and reduces complexity of the code as well.
If a particular code has to be executed multiple times, a user can put it in a loop to perform multiple iterations to get a desired output. Loops in python are an efficient method for optimizing your code to execute multiple statements.
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