We cannot put different types of variables in the same expression. The proper way to combine the value of y and the string “Dollars” is to use a “+” sign, as shown below.Īnd to check if we are missing something, we can execute the cell.Īpparently, we did not respect the rules of coding in Python. In addition, we would like to ask the machine to print out a statement that says: “Y dollars”, where y is a number. Let’s create the variable y which is supposed to represent the number of dollars you have in your pocket. If the values you’d like to assign are not numerical, the quotes can come into play! How to Print Several Strings? If we assign “George” to a new variable, let’s say x4, we can obtain its output as we did with the integers and floats.Īll right, so that’s it. Should you use print(), the output will be shown with no quotes – you’ll be able to see plain text. This is how Python displays text results if you don’t use the print() function. The output values of these two inputs are the same. We can put both single or double quotation marks to achieve this result. Typing quotation marks around the name George would do the job. Here’s the magic trick that will correct this mistake. If you are wondering why, it is because Python assumes George is the name of a variable to which we have assigned no value. If we ask the machine to display the name George this way, we’ll obtain an error message. Let’s see how we can create a string in practice. Strings are text values composed of a sequence of characters. The last example of data types in Python we will go over is string. So, to sum up, the two Boolean values a variable can have are True or False, and they must be written with a capital letter. ![]() Side note: An important detail you should remember is that you have to type True or False with capital letters! Otherwise, Python won’t recognize your variable as a Boolean and will display an error message. If we check its type with the type() function, we get the output ‘bool’. Let’s create a new variable, x3, and assign to it the value True. In Python, this means a True or False value, corresponding to the machine’s logic of understanding 1s and 0s, on or off, right or wrong, true or false. An example of such type of values is the Boolean type. Not all variables should assume numeric values. That’s why 4.75 turns into 4 after executing the code shown in the picture.įloat(), instead, will add a decimal point to the integer or Boolean value and will turn it into a float. Int() transforms the variable into an integer. Let’s look at two other built-in functions, int()and float(). 4.75 is such a number so Python reads it as a float. We can check its type by using the type() function again.įloating points, or as you’ll more frequently hear - floats, are real numbers. Now, let’s assign the value of 4.75 to a new variable, x2. For instance, if we write type(-6), Python will correctly point out that -6 is an integer. The type() function can also be applied directly to a value instead of a variable. So, in this case, we’ll type x1.Īfter executing the code, the result we obtain is “int”, which indicates the value is an integer. Within the brackets, we must place the name of the variable whose type of value we want to verify. We can apply the type() function on different data types in Python following this rule. ![]() In fact, there is a specific function in Python that can prove this is correct. Let’s create x1 and bind to it the value of 5. I believe in learning through doing, so let me show you what you can do with integers. Integers are positive or negative whole numbers without a decimal point. This is because numbers can be either integers or floats (floating points). When programming, if you say that a variable has a numeric value, you are being ambiguous. Since there are many programmers who are good at math, let’s take a look at the numeric data types in Python first. ![]() If you are not comfortable with using variables in Python, our article on how to declare python variables can change that. The data types in Python that we will look at in this tutorial are integers, floats, Boolean, and strings.
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