Python tutorial 07: Single Line String in Python Programming By Manish Sharma

Key Takeaways

remember when I said that we will discuss the concepts of single and double quotes in a separate video this command into a pair of single or double quote we will discuss more about the single and double quote concept in a separate video anyways today's study when I do that boo subordinate i am manish from rebellionrider.com and welcome to another amazing Python video today in this tutorial we will learn the concepts of the strings and string literals in Python so what are strings in computer programming language the strings are nothing but a single dimension array of characters in easy words you can define a string as a sequence of characters for example rebellion writer is a string made up of fourteen alphabetic characters and a white space which in total becomes 15 characters thus we can say that rebellion writer is a sequence of 15 characters which makes it eligible to be called a string a string can be categorized as a single line string and a multi-line string let's just focus on single line string in this video and save the multi line for the next one great every programming language has its own way of handling our strengths some of them are lenient while others are rigorous let's see how easy it is to handle a string in Python programming language but before that go ahead and press that thumbs up button and like this video most importantly subscribe to the channel if you haven't already as I am aiming for one lakh subscribers this year let's start in Python programming language there are multiple ways of handling a string among those the most common are including the string in single quotes and enclosing the string in double quotes apart from these two options Python interpreter provides us one more way which is for handling multi-line strings said earlier we will discuss it in the next video for now let's learn when to use the single quotes and double quotes okay right on your screen you can see three different examples of strings let's see how are they different from each other and how can we deal with them using Python programming language the first string which is I'm learning Python from rebellionrider.com is a simple string as it does not contain any special punctuation sign the second string which is what's up Internet contains a special punctuation sign which is apostrophe at the starting of the string while the third string which is I am going to be a Python programmer very soon contains a phrase in the middle of the string which is enclosed into a pair of double quotes now let's do the demonstration and see how to deal with these strings for this demonstration my choice of editor will be Adam editor you can use whatever editor you want let's start with the first one the simple string in case of simple string which does not involve any special punctuation science the choice of using quotation mark completely depends on you you can enclose the string either in single quotes or in double quotes for this string I will use the single quotes let's see the output here we got the desired output without any errors now let's move on to our second string the second string contains a punctuation mark which is an apostrophe sign this apostrophe sign will require our special attention let me explain you why whenever python interpreter starts processing a string it looks for quotation mark it could either be single quote or double quote the opening code indicates the starting of the string and closing code indicates the end of the string if either of these committing then it will raise an Elan which will end up in an error so what does it have to do with our second string to understand that let's write the code and see what do we get let's see the output as an output we got a syntax error so the question here is why this error let's try to understand what exactly happened here so I enclose to the strain into a pair of single quotes when the interpreter starts it comes across with the opening code which indicates the starting of the string and as it proceeds it encounters the apostrophe sign the interpreter translate this apostrophe sign as a closing single code and that's where the problem arises now when the interpreter moves ahead it finds rest of the string which is neither enclosed in a single code nor in a double code which causes the error so how to solve it the easiest way is to enclose this entire string into a pair of double quotes instead of single this way the interpreter will treat the opening double code as a starting of this string and we'll look for the closing double code sign for the end of the string any punctuation mark that comes in the middle will be bypassed now let's see if this string gets printed as is intended or not here is the output which is exactly the same as we desired so in simple words if you ever have to print a string which contains punctuation marks like apostrophe then enclose that string into a pair of double quotes now let's move on to our third string so far you must have gotten the idea of how Python handles the strings right so let's do one thing right now you can see the third string on your screen now I want you to pause this video right here and comment how to print this string on your Python prompt have you done it great now let's see how many of you have got it right so the string is I am going to be a Python programmer very soon this is again a simple string except that it has a phrase in between which is enclosed in double quotes we just need to make sure that these double quotes get translated as they intended to be in such scenario where you want to print a string which contains punctuation marks like double quotes then always includes your string in a pair of single quotes that we the opening single quote will indicate the starting of the string an interpreter will look for the closing single quote sign which will indicate the end of your string any punctuation mark that comes in the middle will be bypassed let me show you let's see the output here is our output which is our sentence with fries Python programmer enclosed in double quotes exactly as we wanted so that's how we use single and double quotes to work with single line string in Python programming now it's time for you to evaluate yourself I want you to go ahead and write Python programs to print these strings which are flashing on your screen let's see how much you learned that's it for today hope you learned something new please keep this video a thumbs up and share it with your friends and subscribe to the channel for more such interesting tutorials thanks for watching this is manish from rebellionrider.com