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Python not equal to empty10/2/2023 We can use the not equal operator to stop the flow of a while loop. A while loop is run until a condition is no longer equal to True. Similarly, we can use the Python not equal operator in a Python while loop. How to Use Python Not Equal in a While Loop Otherwise, the value is appended to the list even.If it isn’t then the value is appended to the odd list.We evaluate whether the result of the modulo 2 is not equal to 0.We then loop over each value in our list values.One containing our values and two empty lists to hold our split up values. Let’s take a look at an example, where we can evaluate whether each item in a list is even or not: # Using != in a Python For Loop This allows you to evaluate every iteration of a for loop and perform an action in that loop. The Python not equal operator != can also be used in a for loop. How to Use Python Not Equal in a For Loop Since these two values are equal, the code moves to the else statement.Because 25 % 5 evaluates to 0, our expression turns into 0 != 0.The expression on the left is evaluated.We can do this using the module operator, %: # Using != In an if-else Block Because of this, we can easily apply it to an if-else statement to make a decision in our code.įor example, we can write an if-else block to evaluate whether or not a value is a multiple of five. The Python not equal operator returns a boolean value, either True or False. How to Use Python Not Equal in an If Statement Understanding these differences can ensure that your code runs as smoothly as possible. != evaluates whether two items are not equal to the same value. is not evaluates whether two expressions point to the same place in memory.However, there are some nuanced differences. In this example, it may seem that these perform the same function. Let’s take a look at an example: # Comparing != and not in Python There are some key differences here, however. It may seem that we can use the not equal operator in Python interchangeably with the not keyword. One of the great things about Python is the ability to use plain-English words to write your code. Python Not Equal Operator Versus Not Keyword != is available in both Python 2 and Python 3īecause the operator has been deprecated in Python 3, to future proof your code (if you’re still running Python 2), it’s better to use !=.Python 2 had two not equal operators available: The equality operator checks for equality and will return a True if the values are equal to one another. The expression represents the inverse of the equality operator, =. Because that’s not the case, the expression returns True. We can see that when we evaluate whether or not 1 is equal to 2. Let’s take a look at an example: # A Basic Example of the Not Equal Operator
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