Curso Python #08 - Utilizando Módulos

Name: Curso Python #08 - Utilizando Módulos
Uploaded: 2017-07-24T14:00:05.000Z
Duration: 1 h 6 min 29 s

Introduction and Course Overview

In this section, the instructor introduces the Python programming language course and expresses gratitude to the supporters of the project.

Course Introduction

The instructor welcomes students back to the Python programming language course.

Expresses gratitude towards all the supporters who helped achieve the goals of the project.

Acknowledges that a significant number of students will benefit from this course.

Phase Eight - Working with Modules

This section introduces the concept of modules in Python and how they can be used to extend the functionality of a program.

Understanding Modules

Compares modules in programming languages to additional features or components added to a basic car model.

Explains that Python programs come with a limited set of commands by default for efficiency purposes.

Describes how modules can be imported into a program using the import command.

Mentions that importing modules allows access to additional functionalities provided by those modules.

Analogy with Human Body and Libraries

This section uses an analogy with the human body and libraries to further explain how modules work in Python.

Analogy with Human Body

Compares adding functionalities through modules in programming to adding food and drinks to our body for various functions throughout the day.

States that these resources are not standardized within us but need to be added externally as needed.

Relates this concept to importing libraries or modules in Python programs.

Importing Libraries in Python

This section explains how libraries are imported in Python programs and their role in extending program functionality.

Importing Libraries

Emphasizes that Python programs have a limited set of commands by default for efficiency.

Explains that libraries or modules can be imported using the import command followed by the name of the library.

Demonstrates how importing a library allows access to all the functions and resources provided by that library.

Importing Specific Functions from Libraries

This section explains how to import specific functions from libraries in Python.

Importing Specific Functions

Differentiates between importing an entire library and importing specific functions from a library.

Introduces the from keyword to import only specific functions from a library.

Provides an example of importing only one function from a library using the from keyword.

The transcript is not in English, but I have provided the summary in English as requested.

Importing Modules in Python

This section explains the two basic ways to import modules in Python: using the import statement and using the from statement. It also discusses the difference between these two approaches.

Importing Modules with import

The import statement allows you to import all functionalities of a module.

Example: import math imports all mathematical functions from the standard library.

Importing Modules with from

The from statement allows you to import specific functionalities from a module.

Example: from math import sqrt, pow imports only the square root and power functions from the math module.

Benefits of Specific Imports

Using specific imports can save memory as it only imports what is needed.

Example: If you only need the square root function, importing only that function will save memory compared to importing all functions from the math module.

Mathematical Functions in Python

This section introduces various mathematical functions available in Python's standard library and how to use them.

Common Mathematical Functions

Python's standard library includes functions for operations like addition, subtraction, multiplication, division, and exponentiation.

Examples include addition (+), subtraction (-), multiplication (*), division (/), and exponentiation (**).

Additional Mathematical Functions

The math module provides additional mathematical functions such as rounding up or down, calculating factorial, calculating power, etc.

Examples include rounding up (ceil()), rounding down (floor()), calculating factorial (factorial()), and calculating power (pow()).

Importing Specific Mathematical Functions

To use specific mathematical functions, you can import them individually using either import module.function or from module import function.

Example: import math followed by math.sqrt() to calculate the square root.

Practical Implementation

This section demonstrates how to import and use mathematical functions in a Python project.

Setting Up the Project

Open your preferred Python IDE or editor.

Create a new project or file for practicing the examples.

Importing and Using Mathematical Functions

Import the math module using import math.

Use the imported functions by prefixing them with math..

Example: math.sqrt(25) calculates the square root of 25.

Tips for Practical Implementation

This section provides tips for practical implementation of importing modules and using mathematical functions in Python projects.

Updating PyCharm

Ensure that you have the latest version of PyCharm installed.

Check for updates by clicking on "Configure" and selecting "Check for Updates."

Creating a New Project

Right-click in PyCharm's project explorer and select "New."

Choose a name for your project, such as "Aula 08."

Importing Modules Correctly

When using specific functionalities from a module, import only those functionalities to avoid unnecessary memory usage.

Example: Instead of importing all functions from the math module, import only sqrt if that is the only function needed.

These notes provide an overview of importing modules and using mathematical functions in Python. They cover different ways to import modules, common mathematical operations, additional mathematical functions available in the math module, practical implementation tips, and best practices.

Desafios de Programação em Python - Portuguese

This transcript is a discussion about programming challenges in Python. The speaker covers various topics related to libraries, modules, and exercises.

Introduction to Programming Challenges

The speaker introduces the concept of programming challenges in Python.

They mention that examples and exercises will be provided throughout the discussion.

Libraries and Modules

The speaker discusses the use of libraries and modules in Python programming.

They explain that libraries contain pre-written code that can be used for specific functionalities.

Examples of commonly used libraries are mentioned, such as random number generation.

The speaker emphasizes the importance of exploring available libraries and their documentation.

Creating Custom Modules

The speaker explains how to create custom modules in Python.

They mention that custom modules can be shared with the community and used by other programmers.

An example is given where a validation module is created for community use.

Importing Modules

Different ways of importing modules are discussed.

The speaker demonstrates how to import specific functions or classes from a module.

They highlight the flexibility of importing modules based on individual needs.

Managing Installed Modules

The process of managing installed modules is explained.

Preferences within a project can be adjusted to include or remove specific modules.

A large variety of modules are available for installation, providing extensive functionality options.

Programming Exercises

The following programming exercises are mentioned:

Exercise 16: Keyboard Input

Create a program that reads keyboard input and displays it on the screen using the input() function.

Exercise 17: Triangle Calculation

Write a program that calculates the length of the hypotenuse of a right triangle using its two shorter sides.

Exercise 18: Angle Projection

Calculate the projection distance given an angle in degrees using trigonometric concepts.

Exercise 19: Random Selection

Create a program that randomly selects a name from a list of four students.

Exercise 20: Presentation Order

Randomize the presentation order of 24 students, ensuring that no student presents twice before all others have presented once.

Exercise 21: MP3 Album

Develop a program that manages an MP3 album using modules and provides various functionalities.

Conclusion

The speaker encourages viewers to attempt the programming exercises and mentions that additional challenges will be provided in future lessons. They also mention the availability of resources and materials on their Facebook page for further learning.