Easy loading and waiting spinner for python terminal applciations

creating a loading and waiting spinner in python terminal applications can enhance user experience by providing visual feedback during long-running operations. below is a tutorial that demonstrates how to create a simple loading spinner using python, along with a code example.

### tutorial: creating a loading spinner in python terminal applications

#### step 1: setting up the environment

ensure you have python installed on your system. you can check this by running:

#### step 2: creating the spinner

the spinner can be created using the `itertools` module and the `sys` module to control the output. here’s how we can do it:

1. **define a spinner class**: this class will manage the spinner's state and handle the printing to the console.
2. **start and stop methods**: the spinner should start when a long-running process begins and stop when the process completes.

#### step 3: code example

here is a complete code example that implements a simple loading spinner:

### explanation of the code

1. **spinner class**:
- **`__init__`**: initializes the spinner with a default message and sets up the spinner sequence.
- **`start`**: begins the spinner animation in a separate thread.
- **`_spin`**: continuously updates the spinner's state while the spinner is running.
- **`stop`**: stops the spinner and clears the line in the terminal.

2. **example usage**:
- an instance of the `spinner` class is created and started.
- once the process is complete, the spinner is stopped, and a completion message is printed.

### usage

run the above code in your terminal. you will see a loading spinner that runs for 5 seconds before displaying "done!".

### conclusion

this loading spinner is a simple yet effective way to provide feedback to users during lengthy operations in terminal applications. you can customize the spinner's symbols, speed, ...

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