https://github.com/hamed-gharghi/basic-calculator
Basic Calculator using PyQt5 with EXE and Python file
https://github.com/hamed-gharghi/basic-calculator
basic-calculator basic-calculator-app calculator-python dark-theme gui gui-application pyqt5 python
Last synced: 6 days ago
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Basic Calculator using PyQt5 with EXE and Python file
- Host: GitHub
- URL: https://github.com/hamed-gharghi/basic-calculator
- Owner: Hamed-Gharghi
- License: mit
- Created: 2024-07-30T16:55:58.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2024-07-31T04:08:30.000Z (11 months ago)
- Last Synced: 2025-02-25T12:24:43.934Z (4 months ago)
- Topics: basic-calculator, basic-calculator-app, calculator-python, dark-theme, gui, gui-application, pyqt5, python
- Language: Python
- Homepage:
- Size: 34.5 MB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Basic Calculator Application
## Description
This is a basic calculator application built using PyQt5. It includes functionality for basic arithmetic operations and can be operated using both on-screen buttons and keyboard input. This project demonstrates a simple GUI application with event handling in Python. The UI now supports a dark theme for a modern look and reduced eye strain. An application icon is also included.
## Features
- Basic arithmetic operations: addition, subtraction, multiplication, and division.
- Clear and backspace functionalities.
- Keyboard input for calculator operations.
- User-friendly graphical interface with dark theme.
- Application icon for a polished look.
## Installation
1. Clone the repository:
```sh
git clone https://github.com/your-username/Basic-Calculator.git
```
2. Change to the project directory:
```sh
cd Basic-Calculator
```
3. Install the required packages:
```sh
pip install PyQt5
```
## Usage
1. Run the Python script:
```sh
python Basic-Calculator.py
```
2. Use the on-screen buttons or the keyboard to perform calculations.
### Keyboard Shortcuts
- `0-9`: Enter numbers
- `+`: Addition
- `-`: Subtraction
- `*`: Multiplication
- `/`: Division
- `(`: Open parenthesis
- `)`: Close parenthesis
- `.`: Decimal point
- `Enter`: Calculate result
- `Backspace`: Remove last character
- `ESC`: Clear input
## How It Works
### Code Explanation
The `Basic-Calculator.py` script is the main Python file for this application. It uses the PyQt5 library to create the GUI. Here is a brief explanation of the code:
1. **Importing Libraries**: The code starts by importing the necessary modules from PyQt5.
```python
from PyQt5 import QtCore, QtGui, QtWidgets
```
2. **UI Setup**: The `Ui_Form` class contains the setup for the UI. It defines all the buttons and the input field, and now includes a dark theme and an application icon.
```python
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(400, 300)
self.setWindowIcon(QtGui.QIcon('icon.png')) # Set application icon
self.setStyleSheet("background-color: #2e2e2e; color: #f0f0f0;") # Dark theme
self.lineEdit = QtWidgets.QLineEdit(Form)
self.lineEdit.setGeometry(QtCore.QRect(10, 10, 381, 41))
self.lineEdit.setObjectName("lineEdit")
self.lineEdit.setStyleSheet("background-color: #1e1e1e; color: #ffffff;")
...
```
3. **Button Initialization**: Each button is initialized with a specific geometry and text label, and styled for the dark theme.
```python
self.pushButton = QtWidgets.QPushButton(Form, text="7")
self.pushButton.setGeometry(QtCore.QRect(10, 60, 61, 51))
self.pushButton.setStyleSheet("background-color: #3e3e3e; color: #ffffff;")
```
4. **Connecting Buttons to Methods**: Each button is connected to a method that handles its functionality.
```python
self.pushButton.clicked.connect(lambda: self.button_clicked("7"))
```
5. **Button Click Handler**: The `button_clicked` method updates the input field with the button's text.
```python
def button_clicked(self, text):
current_text = self.lineEdit.text()
self.lineEdit.setText(current_text + text)
```
6. **Calculation and Clear Functions**: The `calculate` method evaluates the expression in the input field, while the `clear` method resets it.
```python
def calculate(self):
try:
result = eval(self.lineEdit.text())
self.lineEdit.setText(str(result))
except Exception as e:
self.lineEdit.setText("Error")
def clear(self):
self.lineEdit.setText("")
```
7. **Keyboard Input Handling**: The `keyPressEvent` method allows the user to use the keyboard for input.
```python
def keyPressEvent(self, event):
key = event.key()
...
```
### UI and EXE Files
- **UI File**: The user interface is defined within the Python script itself using PyQt5 widgets and layouts.
- **EXE File**: The executable file (`Basic-Calculator.exe`) allows users to run the application without needing to install Python or the required libraries.
## Files
- `Basic-Calculator.py`: The main Python script for the application.
- `icon.png`: The icon file for the application.
- `Basic-Calculator.exe`: The executable file for the application (if provided).
## Author
**Hamed Gharghi**
## License
This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
## Acknowledgments
- PyQt5 Documentation: [https://www.riverbankcomputing.com/static/Docs/PyQt5/](https://www.riverbankcomputing.com/static/Docs/PyQt5/)
## Tags
- `Python`
- `PyQt5`
- `Calculator`
- `GUI`
- `Basic Arithmetic`
- `Keyboard Input`
- `Event Handling`
- `Open Source`
- `MIT License`
- `Dark Theme`
- `Icon`
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