The Complete guide to Python For beginners (2021)

Learn how to access Python on a Linux system using simple commands to run Python 2.7 or Python 3, and how to update the setup without installation.

Indentation is mandatory in Python to define blocks inside if statements, loops, classes, and functions. Use spaces or tabs, and rely on editors to auto-indent, preventing errors.

Learn how to declare and use variables in Python, explore data types such as integers, floats, complex numbers, lists, sets, strings, booleans, and dictionaries, and understand memory addresses.

Discover how to perform multiple assignments in Python by assigning a single value to several variables, assigning multiple objects, and swapping values with lists and iterables.

Learn how to define and manipulate Python lists and tuples, including indexing, slicing, mutability differences, and memory considerations.

Explore Python sets and zip by learning how to remove duplicates, add elements, and use zip to pair iterables, with frozen sets illustrating immutability.

Explore how dictionaries store data with unique keys and flexible values, and learn to create, add, access, update, delete, and iterate over dictionary entries in Python.

Explore Python operators, including arithmetic, relational, assignment, binary, logical, membership, and identity operations, with examples like addition, exponent, division, and left and right shifts.

Explore Python conditions and boolean logic with if, else, and elif statements. Learn indentation, operators, nested conditions, and examples like max of three numbers and withdrawal scenarios.

Explore Python loops by examining while loops and for loops, how conditions control iterations, and how blocks run for fixed counts or through sequence elements.

Master the range function to use with for loops, control start, end, and step, and learn list comprehension for compact one-line iterations from zero to nine.

Learn how Python strings work as immutable sequences of characters and apply common methods like upper, lower, isalpha, strip, len, split, join, replace, and startswith or endswith to manipulate text.

Master string concatenation in Python by using the plus operator, f-strings, and formatting to insert spaces and join multiple strings.

Learn string slicing in Python by indexing left to right and right to left, using start, end, and step to extract substrings with negative indices and exclusive end.

Learn to use Python's datetime package to obtain current date and time, format and parse dates, and compute future or past dates with time delta.

Learn how to get user input with the input method, which returns a string. Convert the input to a number with type casting and customize prompts to guide the user.

Learn to use map, filter, and reduce in Python to transform lists, filter odd numbers, and accumulate results with lambda or simple functions.

Explore how to sort lists with sort and sorted, control order including descending, and leverage lambda functions as anonymous helpers in Python for key-based sorting and higher-order use.

Explore the four types of function arguments in Python, including required, keyword, default, and variable-length arguments, with hands-on examples of *args and **kwargs.

Understand the scope of variables in Python, including local and global variables. See how to access and modify a global variable inside a function using the global keyword.