Gain insights into Python by exploring basic to advanced concepts, including loops, classes, and GUIs with Tkinter. Delve into testing and become a productive Python programmer.

complete.tar.gz

InputN-copy

Error-copy

In this course, you will get a comprehensive overview of Python. You will start by laying the foundation and learning the introductory topics like operators, conditional statements, functions, loops, assignment statements, and more. You will then move onto more advanced topics such as classes and inheritance, iterators, list comprehensions, and dictionaries. Along with this, you will also get to explore the concept of testing and take a look at how GUI applications can be designed using Tkinter, Python's standard GUI library. 

By the time you're done, you'll be able to hit the ground running and be equipped with the tools that will allow you to be productive in Python.

Python 3: From Beginner to Advanced

def check_balance(brackets):
    check = 0
    for bracket in brackets:
        if bracket == '[':
            check += 1

        elif bracket == ']':
            check -= 1

        if check < 0:
            break

    return check == 0


bracket_string = '[[[[]]'
print(check_balance(bracket_string))

# Explanation

The solution relies on the value of the `check` variable declared at **line 2**, which is updated in each iteration. 

At **line 4**, if an **opening bracket** is found, `check` is **incremented by 1**. In the case of a **closing bracket** at **line 7**, `check` is **decremented by 1**.

The logic is that check should never be negative at **line 10** because that would imply that somewhere in the string there are more closing brackets than opening ones. The condition for being unbalanced is satisfied, and we don’t need to check further.

Another case is that after the loop finishes, at **line 13**, the value of `check` **would be 0** because the brackets match. If it’s not, the function simply returns `False`.

This review explains the solution for the "balanced brackets" exercise.

Introduction

The Absolute Bare Minimum

Better Tools

Classes

Getting Fancy

Testing

Graphical User Interfaces

Modules

Appendix

I Guess We're Doing Python Now Exam

Solution Review: Check Whether the Brackets are Balanced