Python concepts in just 10 pages. You can learn Python within minutes and learn the basics of Python without any prior knowledge. This document is made both for experts as well as beginners who want to learn or revise important Python concepts. It also contains examples of each topic so that you ca...
In this Python tutorial, you'll learn everything you need to start programming in Python. This
tutorial is perfect for data science, machine learning, and web development. No prior
knowledge in Python or programming is required as everything will be taught from scratch.
What is Python?
Python is a multipurpose programming language that can be used for a variety of different
tasks, such as automation, web development, and data science.
● You can use Python in automation to automate repetitive tasks and save time and
increase productivity.
● You need to install a code editor to write your own Python code.
● You can build amazing websites powered by Python.
We'll be using PyCharm as our code editor in this tutorial. When you open PyCharm for the
first time, you have to configure a few settings, but we can skip that for now and set defaults.
Let's create a new project and collapse the project window to give more space. We can then
print a message on our application window.
Receiving User Input in Python
In Python, we have a built-in function called input() that we use to read a value from the
terminal window. We can add a string argument to the function to prompt the user for input.
Let's write a simple program to demonstrate this:
name = input("What is your name? ")
print("Hello, " + name)
, When we run this program, it will prompt the user to input their name. Once a value is
entered, the program will print the greeting message with the input value.
Data Types in Python
There are three main data types in Python: numbers, strings, and booleans.
● Numbers - This includes integers and floating-point numbers.
● Strings - This includes textual data.
● Booleans - This includes True and False values.
Converting Data Types in Python
Python has several built-in functions for converting the types of our variables. For example,
we have the int() function for converting a value to an integer:
birth_year = "1982"
age = 2020 - int(birth_year)
print("You are " + str(age) + " years old.")
In the above example, we use the int() function to convert the birth_year string to an
integer so we can subtract it from the current year.
We also have the float() function for converting a value to a float:
num = "10.5"
float_num = float(num)
print(float_num)
In the above example, we use the float() function to convert the num string to a floating
point number.
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