por For those who are just starting out in programming, exercises like how to check an integer in Python or how to make a program that solves a certain problem are fundamental questions. Python has earned its place as one of the programming languages most used by users, thanks to its versatility and syntactic simplicity for those who are just starting to program or, on the other hand, for those who are doing specific projects that need tools like those offered by Python.
Therefore, in this post, we want to tell you how to check an integer in Python and, in addition, some functions that you can later review in more depth about integers in Python, but that will give you an idea of the functionalities of the programming language. programming.
How to check an integer in Python
Many times, in programs that involve mathematical thinking, you will have had to use integers, i.e. positive or negative numbers that do not have a decimal accompanying them.
For this reason, at we will make the search easier for you and, in addition, we will reduce the time you have to think about it, since we will tell you two ways to know how to check an integer in Python.
First option: type function to find out if there are integers in Python
The first option they give you for how to check an integer in Pyhton is through the type () function. According to the Python documentation, The type() function responds to the class type of an argument that has been entered as a parameter. This function can receive one or three arguments, so that it is returned with the class.
For this first option we also use class function int in Python, int( ), Well, since we want to know if a specific number is truly integer, What int does is convert the value entered to an integerfrom a number or an object string. If nothing is entered, it returns the number 0, which is also an integer. So, we will check if a number is an integer in Python as follows:
#this is a function that conditions, the == operator compares two values and produces the boolean: True or false. the type and int function is used in python
if type (number) == int
return True
else:
return Flase
Now, it is key that you know that int of integers in Python is not the only class that belongs to the function type. According to the programming language documentation, apart from integers, there are the floating point numbers and complex numbers.
These are represented as float( ) and complex( ) for the integer in Python. It is important to note that these integer functions in Python work with operators such as ==, that is, equal; <, which means less than; >, that is, greater than; <=, which means less than and equal to; >=, greater than and equal to; !=, that is, it is not equal…
In turn, int does not have just one method. On the other hand the type int proposes another class, which is numbers.Integral. This, for its part, provides some methods, such as: int.bit_length, int.bit_count, int.to_bytes, int.from_bytes of classmethod and finally int.as_integer_ratio. These additional methods also appear when you are using the class float of the function type in the Python programming language.
Second option: isinstance function with int in Python
A second option for the integer in Python to know if a number is an integer is to use the function isinstance( ). According to this programming language’s documentation on integers in Pythonthis function works from the instances of classes or subclasses of them. That is, the function is given an object and the class, and then true is returned if the object is an instance of the class or subclass. If not, the condition returns false. so it does not belong to integers in Python.
#condition that returns boolean (true or false), the isinstance function and the object and the class as arguments
if ininstance (number, int)
return True
else:
return False
Another function that is balanced for the purposes of the isinstance function is the function issubclasswhose purpose is to return true if the class entered as a parameter is a subclass, either of any type, such as direct, indirect or virtual, of the classinfo.
This way, you now know how to check an integer in Python through two different functions.
Learn more about Python
Although you now know how to check an integer in Pyhton, you will need to continue learning about the possibilities of this programming language. If you want to know how to solve more problems using the tools provided by Python and other programming languages, you must continue studying and putting into practice all the concepts you have learned.
That’s why, If you want to delve deeper into the strategy and its characteristics, we recommend reviewing the Learn to Program from Scratch Bootcamp stages program. This bootcamp emphasizes learning Python, as we believe it is the first programming language you should learn. Don’t miss it and sign up!