Python Programming Language
Python is an extremely popular coding language that has multiple purposes in today’s world. It was developed by Guido van Rossum in 1991 and further developed by the Python Software Foundation. Python is a programming language that lets you work quickly and integrate systems more efficiently. There are two major Python versions: Python 2 and Python 3. Both are quite different. Python’s design philosophy emphasizes code readability with its notable use of significant whitespace. It is also very easy to pick-up but also very versatile. Today we will learn how to write a number program in python.
How to Read and Write Python
Before learning the number program in python, you should know that each program is basically a data processor, so we should learn how to input and output data with it. A function is present, that is Print( ), to output data from all Python programs. To use it, pass a comma-separated list of arguments that you want to print to the print( ) function. To enter data to a program, we use Input ( ). This function is used to read a single line of code, as a String.
Number Program
Let’s try to code a number program in python that takes two numbers as input and prints the total of them. We read those two numbers and store them in variables a and b through the assignment operator. On the left-hand side of the assignment operator, we input the name of all the variables. The name can be a string of Latin words, however, they must start with a letter in the range A to Z. On the right-hand side of the assignment operator we input an expression that Python can cross-check. It starts pointing to the result of the check. Study this example, run it and look at the output
After running an example of a number program in python we can see that it prints a number. As we were taught in school. So, the program is wrong, and it’s important to understand why. The problem is Python has “summed” two strings, rather than two numbers. The sum of two strings in Python works as follows: they are just glued one after another. It’s also sometimes called “string concatenation”.
Do you see in the variable inspector, on the right-hand side, that the values bound to variables a and b are wrapped in quotes? That means that the values there are string, not numbers. Strings and numbers are represented in Python differently.
Every value in Python is called “objects”. Every object will have a certain type. In this number program in python, the number 2 points to an object “number 2” of type “int” (any integer value). The string ‘hello’ correlates to an object “string ‘hello'” of type “str”. Every floating-point number is represented as an object of type “float”. The type of object specifies what kind of operations may be applied to it. For instance, if the two variables ‘first’ and ‘second’ are pointing to the objects of type int, Python can multiply them. However, if they are pointing to the objects of type str, Python can’t do that:
All you need to know about Python Programming
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