Javascript Searches For Two Identical Strings

Michael Zippo 04.11.2021

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Strings in Python are compared to == and ! = operators. These compare whether two Python strings are equivalent or not equivalent, respectively. Returns True or False .

Often times when working with strings in Python you might want to compare them. For example, you can compare a user’s email address with the one you’ve stored in a database when you ask them to reset their password.

Python includes a number of comparison operators that can be used to compare strings. These operators allow you to check how the strings compare to each other and return a True or False value depending on the result.

This tutorial will discuss the comparison operators available for comparing strings in Python. We’ll look at an example of each of these operators to show how they work and how you can use them in your code. If you are looking to learn how to compare strings in Python, then this article is for you.

Python string is and is not the same as

Strings are sequences of characters that can include numbers, letters, symbols, and spaces. Strings are an important data type because they allow programmers to interact with textual data in their programs.

When working with a string, you might want to see whether or not a string is equal to another string or not. This is where the == and ! = come into play.

The == returns True if two values ‚Äã‚Äãmatch ; otherwise, the operator returns False. The ! = operator returns True if two values ‚Äã‚Äãdo not match and False if two values ‚Äã‚Äãmatch.

 It is important to note that string comparisons are  case sensitive
. So upper and lower case letters will affect the result of comparisons you make in your Python program.

 Let’s say you are building a game that tests players on their knowledge of state capitals. To earn points, players must answer a question correctly. Thus, a player can be assigned the state of California and, in order to earn points, must include in the program that the capital is Sacramento.

 Here is an example of this guessing app that compares a user’s response with the response stored by the program: 
 Here is what happens it when we run our puzzle and correctly guess that the state capital of Delaware is Dover:
 Our strings are the same, so our if statement returns correct and prints or ut You’re right!. If we mistakenly assume that the state capital is Denver, our code will return:
 Let’s break our code. On the first, we declare our random status, which in this case is Delaware. Next, we use the user input () method to ask the user What is the capital of Delaware.
 Our program then declares that the state capital is Dover, and uses an if statement to compare whether the state capital that the program has stored is the same as the one entered by the user.
 When we entered Dover , the if statement evaluated True, so our program printed the message You are right! on the console. When we entered Denver, our declaration evaluated False, so our program executed the code in the print else statement.
 The plus method A common way to compare strings is to use the == and operators! =, which compare variables based on their values. However, if you want to compare whether two object instances are identical based on their object IDs, you can use is and is not instead.

The difference between == and is (and ! = and not) is that the == operator compares two variables based on their actual value and the is keyword compares two variables based on their object IDs.

Let’s take an example. Let’s say we have the scores of two users stored as a string and we want to see if they are the same or not. We could do this using the following code:

Our code returns:

In the code above, we could also have used the == operator, but we used the is instead because it consumes less memory and we have to compare two objects.

The player_one_score instruction is player_two_score evaluated to True in our program because both the player_one_score and player_two_score have the same object identifiers. We can verify these identifiers using the keyword id:

Our code returns:

As you can see, our objects are the same, so the is operator evaluates to True. Typically, you should use = = when comparing immutable data types such as strings and numbers and when comparing objects.

Python Other comparison operators
You can also compare strings in lexicographic order using Python. Lexicographical order refers to the order of letters according to the alphabetical order of the letters that compose them. To do this, we can use the other comparison operators offered by Python. They are as follows:

< - Less than

> - Greater than

<= - Less than or equal to

> = - Greater than or equal to

Let’s say that we create a program that accepts two names of students and returns a message whose name comes first in the alphabet.

We could use the following code to do this: