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  Pythonista Slack Chat
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  Data analysis workflow
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  purple_cyborg

  In the absence of pandas, I previously used agate to do some basic analysis. The gist below shows an example of creating a test dataset of employee data, constructing a data table and assigning each record to a random group according to a specific frequency distribution. A summary table is then produced to provide some descriptive salary statistics.

  This was a start for a Monte Carlo simulation model. I completed the rest of the project using pandas on my Mac

  Link to the gist

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  How to get rid of Examples folder and contents?
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  zrzka

  @omz I vote to change the behavior. When I delete content of the Examples folder, but keep the folder itself, examples are not restored and I still have empty Examples folder. Basically Pythonista forces me to keep this folder, even empty one. I understand that you do want to reserve this folder for examples probably, but it's little bit weird. I would auto restore examples only if ExamplesVersion from user defaults differs -> updated/new examples with Pythonista update. Just my $.02. Anyway, not a big issue :)

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  AppStore rule change
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  zrzka

  @simonh Working Copy works well, I'm using it and no problem. Anyway, you can do client sync (pull, commit, push) directly in the Pythonista if you're not affraid of shell. Just ...

  Install StaSH Launch StaSH by running launch_stash.py script Copy your private SSH key into ~/$HOME/.ssh

  ... and you're ready to go :)

  HTH,
  Zrzka

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  Access to App Store data?
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  zrzka

  Hi,

  every application can register custom URL scheme on iOS. And any other app (like Pythonista) can use this URL scheme to test if application is installed or not via canOpenURL. This was unlimited prior to iOS 9. But Apple didn't like it, because there were many apps that did track what user has or hasn't installed, etc. To make it harder for those people, iOS 9 changed policy for canOpenURL. Any application can still use canOpenURL to test if the application is installed or not, but it must include these custom URL schemes in the Info.plist file (LSApplicationQueriesSchemes key). Basically Apple is checking this during review. This also means that if you'd like to test if application is installed or not from Python script (= from Pythonista), Pythonista must have all these custom URL schemes defined in the Info.plist file, which is not possible. Unfortunately the answer is no, you can't do it.

  Answer to your remaining questions is same - no, it's not possible.

  HTH,
  Zrzka

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  Superscript Text in ui Button
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  zrzka

  Just tested the superscriptRange way on the iOS 11B4 and it does work. So, maybe the iOS 10.3.3 is broken in some way. Anyway it’s pretty ugly (way too up), so, you should go with smaller font & custom base line offset for your superscripts. At least you can control how it look like.

  

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  Dual screen support...?
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  zrzka

  @Niall here's the gist which can be easily modified to be a module. Anyway it adds support for connected / disconnected screen notifications, custom handlers (optional), ... Just played with it and it works. You can find example how to use it at the bottom of this gist.

  P.S. Sorry for the indentation (8), I dunno why, but GitHub cripples it even if I set just 2. Maybe Safari on iPad, dunno.

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  Loading other modules? Cartopy/basemap?
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  dgelessus

  It is possible to install additional libraries in Pythonista, but only if they are pure Python, and don't contain any required C/C++/Assembly/Fortran/etc. parts. That means the library itself has to be pure Python, and all of its dependencies have to be included with Pythonista or also pure Python. This is because of Apple's strict rules on code signing - any native (compiled) code loaded by an app must be signed by Apple or the app developer. This means that even if you have a Mac and an Apple Developer membership and were to compile and sign the native modules yourself, you couldn't load them in Pythonista, because of the code signing restrictions.

  Accoding to Cartopy's setup.py, it requires Cython, which is a language based on Python that translates into C, which is then compiled with a normal C compiler. This means that you can't install Cartopy in Pythonista (unless the Cython/C parts are optional, but it doesn't look like it).

  basemap is based on matplotlib, which uses native code, but is included with Pythonista. However if I'm reading the basemap repo right, it also includes some additional C code itself. This means that you also can't install basemap in Pythonista.

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  In App Purchases
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  Question on Pythonista
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  tomk

  Thanks for the info!

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  Background Operation
  background • posted

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  OTPSkipper

  I think just keeping the iPad active will be enough. I don't really need it to run in the background. Thanks!

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  Ambient Light Sensor
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  JonB

  Pretty sure that is all either depreciated, or only works on jailbroken devices. I tried the very first line, IOHIDEventSystemCreate, and it returned a null pointer.

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  Capturing Photos without the iOS screen
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  ilike

  @omz This code is very helpful for me. From the apple developer website (https://developer.apple.com/documentation/avfoundation/avcapturestillimageoutput), the AVCaptureStillImageOutput class is going to be instead with AVCapturePhotoOutput class. Could you give a similar example with the new AVCapturePhotoOutput class? Thank you very much!

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  Source File Notation script [Share]
  notes wrench share • posted

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  [Share] RShell, a remote access to StaSH
  stash remote-control share-code • posted

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  Scene nube problems
  scene • posted

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  OTPSkipper

  Got it. There is setter code in the library and I was overriding it. Here is the fixed code:

  from scene import Scene, SpriteNode, run, EffectNode class pt(SpriteNode): def __init__(self, **kargs): SpriteNode.__init__(self, 'plf:HudX', **kargs) self.scale = 0.5 class plot (SpriteNode): def __init__(self, **kargs): SpriteNode.__init__(self, **kargs) self.anchor_point = (0, 0) self.color = '#8989ff' class test(Scene): def setup(self): clip = EffectNode(parent=self) clip.crop_rect = (0, 0, self.size.x / 2, self.size.y / 2) pane = plot(parent=clip) pane.size = (self.size.x / 2, self.size.y / 2) clip.position = (50, 50) for x in (50, 100, 150, 200, 250, 300, 350, 400): p = pt(parent=pane) p.position = (x, x) if __name__ == '__main__': tst = test() run(tst) ```
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  urllib.request - Python 2 vs 3
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  ihf

  @jonb and @ccc Thank you for the suggested improvements. The original code was not mine and for whatever reason the author decided on urllib rather than requests. Ystockquote stopped providing historical quotes so this code is meant to fill in that deficiency.

  @JonB Thank you!! for taking the time to provide a working script. It is now installed as part of an IOS widget.

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  Benchmarks: What new things does iOS 9 enable in Pythonista?
  ios9 • posted

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  omz

  @Phuket2 I tested with Python 3. I think Python 2 is still faster in most benchmarks.

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  dialogs.form_dialog - I am having a problem with the result
  dialogs • posted

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  Phuket2

  @enceladus , thanks for taking the time to explain. The defaults look at lot better the way you have done them (I think I seen the way I used in stackflow one time and have used that way, goes to show you should look at multiple sources). I understand your dict attr del, I just question @omz reasoning behind this approach. Not to be a smart ass. Just to learn. I do all sort of weird things at times (well all the time). It just really points out to me how important it is to think about inferences/rules made with Params. Look, maybe what @omz has done is actually very Pythonetic, I am certainly in no position to correct him.
  Anyway, thanks again. I am just playing with this wrapper around dialogs.form_dialog. I am going to try to add some persistence to it using shelve I think. Sure I will run into more troubles, so I will be back :)

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  The error~
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  dgelessus

  Is your device jailbroken? Some jailbreak "hiding" tools can cause this issue with Pythonista. If you have one, try disabling it and see if that helps - Pythonista works fine on jailbroken devices in general. (Note: I don't have a jailbreak myself, I'm basically repeating what other people have said in the past.)