Sql not equal to multiple values1/10/2024 ![]() It returns True if the two strings on both sides have different values OR different identities.Īlthough str1 and str2 have the same value, they have different identities. The reason for this is the is not operator compares a difference in identity, not just a difference in value. However, when we compare them using the is not operator on line 8, we get True as the output. In addition, when we compare str1 with str2 on line 7 using the != operator, we get False. Notice that both str1 and str2 have the same value? When we print their values on lines 4 and 5, we get 'Hello' as the output for both variables. If you run the code above, you’ll get the following output: Hello Say we have two strings – str1 and str2 – as shown below: str1 = 'Hello' We discussed this previously in the blog post: How to Compare Strings in Python. In Python, two variables may have equal value, but different identities. In other words, we need to change line 3 above to if int(userInput) != 2:Īlternatively, we can convert 2 to '2', as shown below: if userInput != '2': is not vs != in PythonĪnother important concept to discuss when determining if two values are not equal in Python is the difference between equality and identity. ![]() To compare if userInput is not equal to 2, we need to convert it to an integer. Hence, userInput != 2 becomes '2' != 2, which is True. We get ‘Wrong’ as the output because userInput is a string ( '2'). ![]() Hence, if you want to compare the input against a number, you need to either convert the input to a number or convert the number to a string.įor instance, if you run the following code: userInput = input('What is the smallest prime number? ')Īnd enter 2 when prompted, you’ll get the following output: What is the smallest prime number? 2 A common mistake beginners make is forgetting that the input() function returns the input as a string. This point is important to note when we accept inputs from users using the input() function. Hence, 5 is not considered to be equal to '5'. We’ll get True as the output as 5 is a number while '5' is a string. When determining if two values are not equal in Python, note that datatypes matter.įor instance, suppose we have print(5 != '5') Hence, for compatibility reasons, you should stick to != (instead of ) if you want to do not equal comparisons in Python. However, has been deprecated in Python 3. For instance, both 5 7 and 5 !=7 give us True in Python 2. This operator is the same as the != operator, both of which stand for not equal. In Python 2, besides the != operator, we can use the operator to compare if two values are not equal. If you have programmed in other languages before, or you have seen code written in Python 2, you may have come across the operator. Last but not least, on line 6, not x = 12 is False as x = 12 is True. Similarly, on line 5, not x = 3 is True as x = 3 is False (since x equals 12). On line 2, not 5 = 7 is True as 5 = 7 is False. If you run the code above, you’ll get the following output: False To compare if two values are not equal using the not operator in Python, we can do it as follows: print(not 5 = 5) The not operator inverts the Boolean value after it.Īs the not operator in front of True inverts True to False. Using the not operatorīesides using the != operator to determine if two variables/values are not equal in Python, we can also use the not operator. On the other hand, line 6 gives us False as x is equal to 12. Line 5 gives us True as x (which is 12) is not equal to 7. Next, we use the != operator to compare x with 7 and 12. On line 4, we declare a variable called x and assign 12 to it. ![]() On the other hand, line 2 gives us False as 5 is equal to 5. Line 1 gives us True as 5 is not equal to 7. The != operator returns True if the values on both sides of the operator are not equal to each other.įor instance, if you run the code below: print(5 != 7) The most direct way to determine if two values are not equal in Python is to use the != operator (Note: There should not be any space between ! and =). How to do not equal comparisons in Python Using the != operator ![]() Say we want to determine if two values are not equal in Python, there are two ways to do it: In today’s post, we’ll learn to do “not equal” comparisons in Python. ![]()
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