Let's see what the Damerau-Levenshtein distance is for the last example from the previous section. Refresh the page, check Medium 's site status, or find something interesting to read. It means, if two variables are assigned the same string value, they are really referring to the same string object in memory. Side-by-side comparison of strings in Python | by Leo van der Meulen | Towards Data Science Write Sign up 500 Apologies, but something went wrong on our end. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy, Explore 1000+ varieties of Mock tests View more, Special Offer - Python Certifications Training Program (40 Courses, 13+ Projects) Learn More, Python Certifications Training Program (40 Courses, 13+ Projects), Exclusive Things About Python Socket Programming (Basics), Practical Python Programming for Non-Engineers, Python Programming for the Absolute Beginner, Software Development Course - All in One Bundle. See you next time! This solution is an interesting alternative to regex. Keep that in mind when using the is operator. The image below shows how this example would be represented in memory. Python string comparison To compare 2 string, we have python string comparison operators that can be performed using equality (==) and different comparison like (>, <, !=) operators. !=: This checks if two strings are not . For other alphabets, such as Greek or German, converting to lowercase to make the strings case insensitive doesn't always work. And if you are looking for the opposite, then != is what you need. And that makes lots of sense, after all we just need to edit the last letter to make them equal. Here we discuss How does string comparison work in Python along with the examples of each operator. All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions. The first example we'll see consider that the only difference between the strings is that one of them have leading and/or trailing spaces. Whereas is operator checks whether both the operands refer to the same object or not. Otherwise, two lists are different. The above python code we can use to compare two strings using == operator in Python. For example, == returns True if the two strings match, and False otherwise. The same is the case for != and is not. However, the kind of comparison it performs is different than ==. The difference between the two sets in Python is equal to the difference between the number of elements in two sets. Rohit. Python 2 was released in the year 2000, while Python 3 was released 8 years later in 2008. If you are comparing strings with a mix of uppercase and lowercase letters, then it might make sense to use either the lower() or upper() functions to convert your string to have all uppercase or all lowercase characters. The last and final method is to use a translation table. Below shows you the difference between an uppercase and lowercase "a". Is there a way I can compare str2 with str1 and find the missing pieces? The tutorial will consist of three examples for the comparison of two columns of a pandas DataFrame. In this case, we use some of the built-in functions like join (), lower (), sorted () and intersection () methods. Geek == Geek will return True as the Unicode of all the characters are equal, In case of Geek and geek as the unicode of G is \u0047 and of g is \u0067Geek < geek will return True andGeek > geek will return False. Python is one of the most popular languages in the United States of America. Syntax: if string_variable1 = = string_variable2 true else false Example #1 str1 = 'Educba' str2 = 'Educba' if str1 == str2: print("Strings are same") else: print("Strings are different") Output: Example #2 operator checks whether both the operands refer to the same object or not. At first sight they seem to be the same, but actually they are not. Both Strings are same. Else, Convert both the lists into sets. The comparison is done based on alphabetical ordering, which causes "2" < "10" to evaluated to False. To compare multi-line strings in Python we can use the difflib package. In this guide, we saw 8 different ways of comparing strings in Python and two most common mistakes. As you see, we're comparing identities, not content. In this case, we can trim both strings using the str.strip method and use the == operator to compare them. For more references on set visit Sets in Python. If the above code has some strings, it will print as false because either string is smaller or greater. Use comparison operators to compare two strings in Python. The relational operators compare the Unicode values of the characters of the strings from the zeroth index till the end of the string. The annoying thing is that it requires a list of strings instead of just a single string. . Now, we will see how to compare two string functions in Python using less than comparison operator. Python Output: dict1 is not equal to dict2 Using Loop to Compare Two Dictionaries Read: Python remove substring from a String. Should teachers encourage good students to help weaker ones? Some basic comparison operator is equal to (= =) and is operator. In Python, we can use the function damerau_levenshtein_distance from the jellysifh library. To compare 2 string, we have to take characters in both strings. October 12, 2021. As we've discussed in this article, only use the is operator if you want to check if the two string are the same instances. Let us see how to compare two strings using != operator in Python. Something can be done or not a fit? That's it for today, and I hope you learned something new. By signing up, you agree to our Terms of Use and Privacy Policy. There are no specific data types for either of the variables in Python if it is numeric or string, or character. This can be done using an if statement with equal to (= =) operator. collection.counter () method. Many operators are used in performing the comparison of strings, such as equality operator (= =), comparison operators like (<, >, <=, >=, !, !=). Compare Two Strings Character by Character Using For Loop. Suppose you have two similar strings, say a = "preview", and b = "previeu". Below is the screenshot for which string1 is smaller than string 2, so it will give false as we are checking for greater than or equal to the string1. == and != are boolean operators, meaning they return True or False. Below represents the python code string is > (greater than) comparison. The best solution for this problem depends on where the spaces are, whether there are multiple spaces in the string and so on. Understanding The Fundamental Theorem of Calculus, Part 2. To determine the order, Python compares the strings char by char. However, sometimes you have a string with whitespaces all over it, including multiple spaces inside it. For example, two very small strings, say a = "ab" and b = "ac" will be 50% different. Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? One simple way to compare 'em would be to: The solution using Set difference operator: https://docs.python.org/3/library/stdtypes.html?highlight=set#set.difference. Python String Comparison. If they are not then return False. Below represents the python code string not equal to comparison. Python supports a module called filecmp with a method filecmp.cmp () that returns three list containing matched files, mismatched files and errors regarding those files which could not be compared. In all the above operators, though the strings are the same, then what to do if the order is different to avoid this, we need to first sort the strings and then use them for comparison. This is a guide to Python Compare Strings. == and != are boolean operators, meaning they return True or False. Let us see how to compare two string using == operator in Python. These operators are also case sensitive, which means uppercase letters are treated differently. To compare two strings, we mean that we want to identify whether the two strings are equivalent to each other or not, or perhaps which string should be greater or smaller than the other. By using SequenceMatcher.ratio() we can get the percentage in which they are similar and use that number to assert if the two strings are similar enough. To compare two or more string values in Python, you use comparison operators. Copy That's it! By the end of this tutorial, you'll have learned: The simplest way to check if two strings are equal in Python is to use the == operator. This method only returns duplicated chars, so we still need to strip the leading and trailing ones. This fact can be verified by checking their id () value. These operators use the Unicode values of both the strings to compare each of them accordingly. Let's use the split() function, a built-in string function in Python, to break up a string into a list where each word is a list item.It breaks the string at the specified separator. Is there a verb meaning depthify (getting more depth)? By using our site, you To compare something in Python, we use == operator or is operator. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. Python compare two strings retain difference from one end def after (s1, s2): index = s1.find (s2) if index != -1 and index + len(s2) < len(s1): return s1 [index + len(s2):] else: return None s1 = "canada" s2 = "can" print(after (s1, s2)) Output ada Check if given String is Palindrome Cutting and Slicing Strings While the FileHandler objects direct the logs to a specific file, the StreamHandler object directs the logs to a specific stream. Python uses the objects with the same values in memory which makes comparing objects faster. If lines are identical, output SAME on the output screen. Python string comparison is performed using the characters in both strings. You can find how to compare two CSV files based on columns and output the difference using python and pandas. Line 1: We define a function named difference() that takes in two strings to find the uncommon words between them as parameters. Python comparison operators. Given two strings, the task is to find the common characters between Two Strings. But there are multiple ways to compare the two lists of strings in python. comparing the columns. There's one problem, though. In another words, it tells how many insertions, deletions or substitutions of a single character; or transposition of two adjacent characters we need to perform so that the two string become equal. There are no special methods to compare two strings. When it comes to Python, there are several ways of doing it. Compare two lists using sort() method This way, we can set the threshold based on number of changes instead of ratio. I get an output file of both lists combined into one long list. It then returns a boolean value according to the operator used. In Python, the string has any operations and functions on it, such as concatenation, slicing, comparison, len(), max(), min(), etc. == compares two variables based on their actual value. The third way of comparing strings is alphabetically. Compare these two sets. Compare Strings Character by Character in Python In Python, we can compare two strings, character by character, using either a for loop or a while loop. then check whether this list contains 2 different strings, like "i" and "pure", and then if true, it runs something. When comparing values, Python always returns either "true" or "false" to indicate the result. This operator is used to check the not same string variables. is (identical to) - It compares 2 variables and returns True if both variables are pointing to the same object. How do I compare two large files in Python? Compare two strings by ignoring case. That's correct. 2,703 1 1 gold badge 4 4 silver badges 17 17 bronze badges . The object IDs of str1, str2 and str3 were the same therefore they the result is True in all the cases. This operator is used when we want to compare two string variables. How could my characters be tricked into thinking they are on Mars. The advantage of pandas is the speed, the efficiency and that most of the work will be done for you by pandas: reading the CSV files (or any other) parsing the information into tabular form. If the sets are equal, two given lists are the same. In general, the string is defined as a set of characters or characters within single or double quotes. The below screenshot is for the less than operator to compare whether string1 is less than string 2, then it returns true else false. 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Start Your Free Software Development Course, Web development, programming languages, Software testing & others. For example, if we change "maria" to "Maria", then the result is different because M comes before m. WARNING : Avoid comparing strings that represent numbers using these operators. output the final result. The object ID of the strings may vary on different machines. Can virent/viret mean "green" in an adjectival sense? This is done using the following operators: ==: This checks whether two strings are equal. This is how to compare two string using > operator in Python. For that, we need to convert the string value to integer using int() constructor. The rubber protection cover does not pass through the hole in the rim. Did neanderthals need vitamin C from the diet? Sorry. print ("Hello" <= "Hello") # True Recall that this operator checks for two things - if one string is less or if both strings are the same - and would return True if either is true. Method 3: Creating a user-defined function. Check if one string is greater or less than other string. Whenever we use this function to collect information, the user might accidentally add a trailing space. How to compare one string with integer value in python: Both string and integer are of different types. Since two strings can have different lengths, we must make sure that we only consider the smaller length for iterating over the strings for comparison. I guess that explains why it was so hard finding anything on Google.. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. We can solve this problem in two different ways: The difflib in the standard library has a SequenceMatcher class that provides a ratio() method that returns a measure of the string's similarity as a percentage. The simplest way to check if two strings are equal in Python is to use the == operator. We can then use this number as a threshold and ignore the difference. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Find difference in two rows of string in a pandas dataframe. This means the memory addresses of both variables are the same. The following methods to perform List comparison: reduce () and map () functions. What are the criteria for a protest to be a strong incentivizing factor for policy change in China? Now let see the example for each of these operators below. It will check the character with a lower Unicode and is considered a smaller value character or larger value character, or equal value character. Why do American universities have so many gen-eds? We need to take to 2 string value. Another way of comparing if two strings are equal in Python is using the is operator. did anything serious ever run on the speccy? The example below shows just that, city starts with an uppercase L whereas capital starts with a lowercase l. As a result, Python returns False when comparing them with ==. In this article we will try different ways to compare two lists in python. So, setting up a decent threshold may be tricky. Compare strings in Python Python By Malhar Lathkar 04 Jan 2021 In Python, a string is an immutable object. How to use a VPN to access a Russian website that is banned in the EU? Method 1: Comparing complete file at once. If they are not equal, one string would be larger than the other lexicographically. The simple logic in comparison of strings is that characters are compared to both the strings. As you may well notice, test3.jpg is missing from str2. If that is the case, then str.strip is not enough. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. To make it easier to understand, consider a scenario when we have two strings and we are willing to ignore misspelling errors. This method can operate in two modes : shallow mode: where only metadata of the files are compared like . Python program to find number of days between two given dates; Python | Difference between two dates (in minutes) using datetime.timedelta() method; Python | datetime.timedelta() function; Comparing dates in Python; Python | Convert string to DateTime and vice-versa; Convert the column type from string to datetime format in Pandas dataframe You can also write the same word without the , in this case, the word becomes Strasse. Let's imagine that this difference is small enough for you and you want to ignore it. In this topic, we are going to learn about Python Compare Strings. Compare Two Images and Highlight Differences using Python OpenCV is a powerful and highly optimized open-source library developed and released under the BSD 3-clause license. This tutorial explored how these operators can be used to compare strings, and walked through a few examples of . The two main reasons based on my experience are: This one is very common amongst novice Python developers. String comparison in python is the process of comparing two strings and deciding if they are equal or not equal to each other. Python does not have any built-in functions for string comparison. The solution here is to strip the whitespace from the string the user enters and then compare it. This program uses a user-defined function named compareStrings () to compare two strings. And if you are looking for the opposite, then != is what you need. 1. Case-insensitive string comparison in Python, Python | Data Comparison and Selection in Pandas, Python | Tkinter ttk.Checkbutton and comparison with simple Checkbutton, Python | Find Hotel Prices using Hotel price comparison API, Comparison of Python with Other Programming Languages, Comparison between Lists and Array in Python. Does a 120cc engine burn 120cc of fuel a minute? The is operator compare if the 2 string are the same instance. How to Choose Between isdigit(), isdecimal() and isnumeric() in Python, The Best Way to Compare Two Dictionaries in Python, The Best Ways to Compare Two Lists in Python, Pylint: How to fix "c0209: formatting a regular string which could be a f-string (consider-using-f-string)", How to Implement a Random String Generator With Python, How to Check If a String Is a Valid URL in Python, Python F-String: 73 Examples to Help You Master It, This post was originally published at https://miguendes.me, ' Hey, I really like this post. To compare two lists, we are using the set method. those are actually 2 list of strings you got there. Compare Two Strings using Function. For data : Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. When different characters are found then their Unicode value is compared. A small bolt/nut came off my mtn bike while washing it, can someone help me identify it? You can do it to whatever input source you don't trust. Some developers may prefer to use core Java. If we try to lowercase it, or uppercase it, see what happens. 16. How to Compare Strings Using the <= Operator The <= operator checks if one string is less than or equal to another string. join () : The string method join () takes all of the items in an iterable and returns a string after joining them all together. Suppose we have a string in German named 'Strae', which means "Street". In order to compare two strings according to some other parameters, we can make user-defined functions. You may also have a look at the following articles to learn more . It's available for cross-platform (Linux, macOS, ios, windows, and android) and supports multiple languages (C++, Java, and python ) it's very versatile. Can a prospective pilot be negated their certification because of too big/small hands? The alternative then is to remove the duplicate whitespaces using a regular expression. The Damerau-Levenshtein algorithm counts the minimum number of operations needed to change one string into another. As we know strings are iterable so we can iterate over them and compare each character. Another operator is similar to equal to (= =) operator for comparison of strings known as is operator, which usually compares the object id of the given strings instead of Unicode values. is and equal to (= =) operators are not the same because is operator compares two string variables based on the object id it returns true if same string else false if strings are not same. When I put a test is to say "Hi" every time a match was made, nothing happened. Both the strings are exactly the same, Hence they are equal. The threshold depends on the length of the string. It's 1! Degree in Computer Science and Engineer: App Developer and has multiple . The above screenshot is for the above code, which uses equal to (==) operator, which checks the same or different strings. There are many different operators which are used to compare the strings, such as equal to (= =) operator, not equal to (!=) operator, greater than (>) operator, less than (<) operator, greater than or equal to operator (>=) and less than or equal to (<=) operator. It has various uses. In our example, the first three letters are the same mar, but the next one is not, c from marcus comes before i from maria. This can be done using an if statement with equal to (= =) operator. Bhargav. Unfortunately, that's not possible with the == operator. The best way to ignore case and make effective case insensitive string comparisons is to use str.casefold. Check for trailing or leading spaces, or understand if you are using the right operator for the job. In Python, strings use the ASCII value of characters for comparison. In this article, we are discussing the comparison of strings Python. those are actually 2 list of strings you got there. The function can take any string values as an input. Have a look at the following example where two strings are compared in an if statement : An example of Python compare strings with == If the length of the two lists is different, the list can not be identical and return False. How do I concatenate two lists in Python? I did not know they were called arrays. We will see various examples of python compare two strings. The only difference between them is the final letter. A variable is just a label given to an object in the memory. The first way to compare two strings character by character is to use a for loop. You may like the following Python tutorials: In this Python tutorial, we learned about, Python compare strings. def compareStrings (x, y): if x==y: return 1 print ( "Enter Two Strings: ", end= "" ) sOne = input . It's 1 too! Here we are using the equality comparison operator in Python to compare two dictionaries whether both have the same key value pairs or not. Ready to optimize your JavaScript with Rust? Using java 8 we will count all the letters in the String first converting the string to a stream by calling String. By using relational operators we can only compare the strings by their unicodes. We can compare two strings or two integers.Python uses lexicographic ordering for strings and numeric ordering for integers.. I don't know how to do this sort of check. .css-y5tg4h{width:1.25rem;height:1.25rem;margin-right:0.5rem;opacity:0.75;fill:currentColor;}.css-r1dmb{width:1.25rem;height:1.25rem;margin-right:0.5rem;opacity:0.75;fill:currentColor;}12 min read, Subscribe to my newsletter and never miss my upcoming articles. In this example, SequenceMatcher tells us that the two strings are 85% similar. Below represents the python code string is < (less than) comparison: The above python code, we can use to compare two string using < operator in Python. My function to compare two lists of data in the above format is: result = [] for x in mmeList1: if x not in mmeList2: result.append (x) return result The problem is it's not working. That's it! In contrast, the is operator compares two variables based on the object id and returns True if the two variables refer to the same object. We saw how we can leverage different operations to perform string comparison and how to use external libraries to do string fuzzy matching. ; Splitting the strings. Now, we will see how to compare two string functions in Python using greater than comparison operator. In this Python tutorial you'll learn how to compare two columns of a pandas DataFrame. Explanation. Loop through the files and compare each line of the two files. Then it returns a generator that you can use to join into a single string and print the difference. For ASCII strings, we can either convert both strings to lowercase using str.lower(), or uppercase with str.upper() and compare them. Not the answer you're looking for? Python comparison operators can be used to compare strings in Python. There can be many ways to iterate but here we will see the simplest one. Once difflib has been imported, use the difflib.Differ () to create a new difflib object and then use the compare () method, passing the strings to compare as two arguments. Both Strings are not equal. This operator is used when we want to compare two string variables. As a native speaker why is this usage of I've so awkward? Python. This also works the same as greater than or equal to, but it will check for the string with lower Unicode among the given strings to compare. python; string; list; compare; Share. This is what I am looking for, but in PYTHON. 2022 - EDUCBA. Methods to Compare Two Lists in Python We can use either of the following methods to perform our comparison: The reduce () and map () function The collection.counter () function Python sort () function along with == operator Python set () function along with == operator The difference () function 1. set () method and == operator. In the previous section, we used difflib as a way of telling if two strings were similar enough. A nice thing about this method is that it allows removing not only spaces but other chars such as punctuation as well. The below screenshot is for equal to the operator with less than operator; this also yields true if both given strings have the same Unicode values else it will false. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. We got True because both strings are equal. Method 3: Use a list comprehension and set to Find the Difference Between Two Lists in Python In this method, we convert the lists into sets explicitly and then simply reduce one from the other using the subtract operator. How do I merge two dictionaries in a single expression? What happens if you score more than 99 points in volleyball? is operator is also used for comparison of strings. Open the files to be compared. After writing the above Python code to check( string equal to ), Ones you will print, After writing the above Python code to check( string is not equal to ), Ones you will print, After writing the above Python code to check( string is greater than ), Ones you will print, After writing the above Python code to check( string is less than ), Ones you will print. While comparing, we will have to check if both the lists contain the same elements or not irrespective of the order in which the elements are present in the lists. Python reduce () and map () functions Python comparing two strings to differences [duplicate]. Method 2: Comparing files line by line. If all the characters are equal then return True else . Accordingly, we will have to print the result. Objects with the same identity usually have the same references, and share the same memory location. rev2022.12.9.43105. This can be done using equal to operator also as shown above. This is useful when we need to determine the lexicographical order of two strings. The function can take any string values as an input. Does Python have a string 'contains' substring method? Why is apparent power not measured in Watts? After the object id of str1 is changed, the result of str1 and str2 will be false. Follow edited 6 secs ago. It's easy to use the wrong operator, especially when comparing strings. Let us see how to compare Strings in Python. Whereas. What about the first example? Merge two sorted arrays into a list using C#; Merge Two Sorted Lists in Python; How can we merge two JSON arrays in Java?. ', # this ones are not that similar, but we have a default threshold of 2, how to compare two string ignoring the case, how to ignore whitespaces when performing string comparison, how to determine if two strings are similar by doing fuzzy matching, how to compare two strings and return the difference, how to debug when the string comparison is not working, remove the duplicate whitespaces using a regular expression, Trim strings using native methods or regex to ignore whitespaces when performing string comparison, String comparison is not working? So that means to transform "ac" into "ab" we need 1 change. It's important to have in mind that this comparisons are case-sensitive. We can use both (value or id) to compare strings. Typesetting Malayalam in xelatex & lualatex gives error. Compare to check if two strings are not equal using != operator. In this Python tutorial, let us discuss Python compare strings. A single character is also considered as a string, and it can be declared within double or single quotes. Comparing strings is a fundamental task common to any programming language. sort () method and == operator. . In this section, we'll discuss the reasons why your string comparison is not working and how to fix it. Example: "Geek" == "Geek" will return True as the Unicode of all the characters are equal well. 2) Example 1: Check If All Elements in Two pandas . Using the == (equal to) operator for comparing two strings If you simply require comparing the values of two variables then you may use the '==' operator. I have been working with Python for a long time and I have expertise in working with various libraries on Tkinter, Pandas, NumPy, Turtle, Django, Matplotlib, Tensorflow, Scipy, Scikit-Learn, etc I have experience in working with various clients in countries like United States, Canada, United Kingdom, Australia, New Zealand, etc. Difference between Python 2 and Python 3. Its lowercase form is equivalent to ss but itself has the same form and shape in lower or upper case. It then returns a boolean value according to the operator used. Let's try to find out what will be the difference between two sets A and B. To compare 2 string, we have to take characters in both strings. Else, output the differing lines from both the files on the output screen. First, check if the length of the two strings are equal. So equality operator is returning True as an output. Below is the implementation of the above approach: import java. Python is a high-level, general-purpose programming language.Its design philosophy emphasizes code readability with the use of significant indentation.. Python is dynamically-typed and garbage-collected.It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional programming.It is often described as a "batteries included" language . import difflib string = """hello this is a line and this is a line and another line""" string_edit . Another popular string comparison use case is checking if two strings are almost equal. In this task, we're interested in knowing how similar they are instead of comparing their equality. Sometimes you might want to compare two strings by ignoring space characters. Even after creating str4 with the same contents as in the new str1, the answer will be false as their object IDs are different. Method 1: Using Relational Operators The relational operators compare the Unicode values of the characters of the strings from the zeroth index till the end of the string. In the following code, our user-defined function will compare the strings based upon the number of digits. That happens because a simple call to str.lower() won't do anything to . Comparing two strings using == (equal to) operator The == operator compares the values of both the operands and checks for value equality. In the below python code, You can see, I have taken the value as. In other words, we want to obtain their "diff". Both Strings are same. The character with lower Unicode value is considered to be . Why is Singapore considered to be a dictatorial regime and a multi-party democracy at the same time? Python string identity vs string equality Like any other data, a string occupies a memory location, so we need to differentiate between its content and address. Sometimes we know in advance that two strings are different and we want to know what makes them different. If strings are same, it evaluates as True, otherwise False. The best one will always depend on the use case, but we can narrow them down to a few that best fit this goal. This scenario is used when we know that two given string variables are the same, but their order is different, and yet you want the code to print that they are the same strings; to do this, you need to first use the sort function and then compare the given strings. Connect and share knowledge within a single location that is structured and easy to search. In Python, f-strings (formatted string literals) are a way to include the value of a variable inside a string. In Python, strings are defined as a set of characters where each character has a different Unicode value or ASCII value. A string variable in Python has a value and memory address or a pointer called ID. Python compare two strings characters by characters Another way to compare two strings is to compare character by character. Achieving that will depend on the alphabet we're dealing with. Share Improve this answer Follow answered Jan 31, 2017 at 12:44 epattaro 2,280 1 15 29 Add a comment 0 The solution using Set difference operator: Let's see some examples. It is a similar technique that we used previously. We will see various Python string comparison examples. main() Output: Compare to check if two strings are equal. 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