46 lines
2.1 KiB
Markdown
46 lines
2.1 KiB
Markdown
**Generated Layouts - To Do List Program**
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This program demonstrates how you can a Python "List Comprehension" to create
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a GUI layout. The layout is created in 3 steps.
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1. A title line
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2. The list of checkboxes and descriptions
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3. The buttons
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That is the layout that these 3 lines of code create
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```python
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layout = [[Text('My To Do List', font='Helvetica 15')]]
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layout += [[Text(f'{i}. '), CBox('', key=f'-CB{i}-'), Input(k=f'-IN{i}-')] for i in range(1,6)]
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layout += [[Button('Save'), Button('Load'), Button('Exit')]]
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```
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This program is a little different in that it imports the individual objects
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being used. Typically the import you'll find in most PySimpleGUI programs is
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```python
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import PySimpleGUI as sg
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```
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The result of importing each object is that you do not need the `sg.` before each function call, thus making the code even more compact. The layout looks cleaner as well.
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However, there are a few drawbacks. One is being able to easily spot calls to the PySimpleGUI package. Another is code completion. If you type `sg.` (control+SPACE) in an IDE, it will show you a list of choices from the PySimpleGUI pacakge that are available to you.
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It's being presented simply as another way of doing things. You'll find the other demos use
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```python
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import PySimpleGUI as sg
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```
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<iframe src='https://trinket.io/embed/pygame/45e4bb64b8?start=result' width='100%' height='500' frameborder='0' marginwidth='0' marginheight='0' allowfullscreen></iframe>
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---
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**To Do List using "normal" import (`import PySimpleGUI as sg`)**
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In this version, the typical import statement is used. The program is identical to the one above, but you'll notice that each element and PySimpleGUI object now has `sg.` in front of it. Nearly all demo programs use this import convention and users have adopted it as well. It's a standard of sorts at this point.
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<iframe src='https://trinket.io/embed/pygame/3be33cd9ee?start=result' width='100%' height='500' frameborder='0' marginwidth='0' marginheight='0' allowfullscreen></iframe>
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