Python Tutorial Basics for Beginners

Study Notes

The text is a Python tutorial for beginners, suitable for data science, machine learning, and web development
The instructor, Mosh Hamedani, has taught millions of people to code
Python is a multi-purpose programming language, popular for machine learning, data science, web development, and automation
To get started with Python, download the latest version from python.org and install a code editor, such as Pycharm
Pycharm is free and open-source for beginners, and can be installed on both Windows and Mac
Write code in Python using functions, such as "print" to display messages
Declare and store data in variables, such as age or price
Change the value of variables as needed
The tutorial focuses on the basics of Python, with more advanced topics, such as graphical user interfaces, to be covered later.- Python supports declaring variables with numbers and decimal points, as well as strings.
Python is case-sensitive, and variables must be declared with consistent capitalization.
Booleans in Python represent true or false values.
Python has built-in functions for input, printing, int, float, and bool conversions.
Python's input() function returns a string by default, so type conversions may be necessary.
Hospital example code demonstrates using input() function to get a patient's name and birth year.
Age calculation requires converting birth year string to an integer before subtracting from the current year.
Python's int(), float(), and str() functions are used to convert data types.
Calculator example requires converting input values to integers or floats for correct results.
String concatenation results in a string, not a sum, when using the "+" operator.
String methods, such as upper() and lower(), can be used to modify strings without changing the original string.
Python's find() method can locate the index of a substring in a string.
Strings are immutable in Python, meaning that they cannot be changed once created, instead, new strings are generated when modifications are made.
Python's in operator can be used to check if a string contains a certain substring, returning a boolean value.