Tips, tricks, and practices to translate UI components Pythonista <-> Jupyter
DrJJWMac last edited by
I want to develop interactive demos for science/engineering courses. I have just started learning python for this. My previous (and indeed ongoing parallel) developments of demos have been using Igor Pro and Maple. I found Pythonista to be a wonderful development environment on my iPad. Already, while on a plane trip, I was able to build my first UI driven graph. I especially like that I can work uncoupled from the internet.
On macOS, I will use Jupyter notebooks.
I want to be able to develop the internal functions for the demos and then import + plug-in the appropriate UI components to translate from Pythonista <-> Jupyter. I am no where near conversant enough in the equivalent of import directives to appreciate how to do this with the lowest amount of fuss on my part. I can anticipate that it must be possible.
As a newbie to python (but an expert in interactive demos elsewhere), I would like to open discussion on tips, tricks, and best practices to translate UI components between Pythonista (i.e.
import ui) and Jupyter (i.e.
I hope this thread finds interest with others.
Matteo last edited by
@DrJJWMac Hi, I don't use Jupyter, I don't know how to use it and for which purposes, but I've read something about it.
- to write source codes of your Jupyter notebooks using offline Pythonista (so I understand that a Jupyter notebook can be created programmatically with basic Python programming language) and
- to test a notebook source code with Pythonista using a library created specially to compile the notebook source code in a full user-friendly - full usable Jupyter notebook.
If a notebook is intended to calculate something with some plots (for example), could your Pythonista <-> Jupyter converter library perform the calculation or it is intended to be a read-only notebook (like a static web page) and in order to execute the notebook user should use a full working Jupyter environment with 3rd-party libraries properly installed?
Can you kindly provide some existing examples of Jupyter notebooks you'd like to write/create with Pythonista? It is only to understand the "degree of freedom" about the use of Jupyter notebooks with Pythonista.
ccc last edited by
try: import ui in_pythonista = True except ImportError: in_pythonista = False try: import ipywidgets on_jupyter = True except ImportError: on_jupyter = False if in_pythonista: print(‘I travel with Pythonista...’) if on_jupyter: print(‘I live on Jupyter...’)
DrJJWMac last edited by
Thanks. That is a nice trick to learn. I'd wish the rest of the coding was as easy. Unfortunately, the UI elements and the ipywidgets elements essentially have to be "hard coded" for each case. By that point in time, the easier path for me is to create specific header blocks for the imports, for the functions, and for the ui controls. I'll have a specific example immediately below.
DrJJWMac last edited by DrJJWMac
Here is the example. First the pythonista code. Presume the UI file has also been created.
import ui import numpy as np import matplotlib.pyplot as plt # calculate the EQ line def plot_EQline(K, A): x = np.linspace(0.0, 1.0, 101) y = np.linspace(0.0, 1.0, 101) yl = x g = K*(10**(A*((1 - x)**2))) y = g*x/(1+x*(g-1)) plt.xlabel('Liquid Mole Fraction x') plt.ylabel('Gas Mole Fraction y') plt.plot(x, y, color='blue') plt.plot(x, yl, color='black') plt.show() # run the ui interaction def update_slider(sender): # Get the root view: v = sender.superview # Get the slider K = 1 + 5*v['slider_K'].value A = 0 + 2*v['slider_A'].value v['label_K'].text = '%2.1f' % K v['label_A'].text = '%2.1f' % A plot_EQline(K, A) plt.close() # run the demo v = ui.load_view('EQLine') v.present('sheet') update_slider(v['slider_K'])
Now the Jupyter code
from ipywidgets import interact from ipywidgets import widgets import numpy as np import matplotlib.pyplot as plt # calculate the EQ line def plot_EQline(K, A): x = np.linspace(0.0, 1.0, 101) y = np.linspace(0.0, 1.0, 101) yl = x g = K*(10**(A*((1 - x)**2))) y = g*x/(1+x*(g-1)) plt.xlabel('Liquid Mole Fraction x') plt.ylabel('Gas Mole Fraction y') plt.plot(x, y, color='blue') plt.plot(x, yl, color='black') plt.show() ##create the sliders interact(plot_EQline, K=widgets.FloatSlider(min=1,max=5,step=0.1,value=3), A=widgets.FloatSlider(min=0,max=2,step=0.1,value=0) )
In an ideal world, pythonista would know about ipywidgets.
ccc last edited by
Houry1947 last edited by Houry1947
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