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Python- Insert new values into 'nested' list?

What I'm trying to do isn't a huge problem in php, but I can't find much assistance for Python.
In simple terms, from a list which produces output as follows:
{"marketId":"1.130856098","totalAvailable":null,"isMarketDataDelayed":null,"lastMatchTime":null,"betDelay":0,"version":2576584033,"complete":true,"runnersVoidable":false,"totalMatched":null,"status":"OPEN","bspReconciled":false,"crossMatching":false,"inplay":false,"numberOfWinners":1,"numberOfRunners":10,"numberOfActiveRunners":8,"runners":[{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":2.8,"size":34.16},{"price":2.76,"size":200},{"price":2.5,"size":237.85}],"availableToLay":[{"price":2.94,"size":6.03},{"price":2.96,"size":10.82},{"price":3,"size":33.45}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832765}...
All I want to do is add in an extra field, containing the 'runner name' in the data set below, into each of the 'runners' sub lists from the initial data set, based on selection_id=selectionId.
So initially I iterate through the full dataset, and then create a separate list to get the runner name from the runner id (I should point out that runnerId===selectionId===selection_id, no idea why there are multiple names are used), this works fine and the code is shown below:
for market_book in market_books:
market_catalogues = trading.betting.list_market_catalogue(
market_projection=["RUNNER_DESCRIPTION", "RUNNER_METADATA", "COMPETITION", "EVENT", "EVENT_TYPE", "MARKET_DESCRIPTION", "MARKET_START_TIME"],
filter=betfairlightweight.filters.market_filter(
market_ids=[market_book.market_id],
),
max_results=100)
data = []
for market_catalogue in market_catalogues:
for runner in market_catalogue.runners:
data.append(
(runner.selection_id, runner.runner_name)
)
So as you can see I have the data in data[], but what I need to do is add it to the initial data set, based on the selection_id.
I'm more comfortable with Php or Javascript, so apologies if this seems a bit simplistic, but the code snippets I've found on-line only seem to assist with very simple Python lists and nothing 'nested' (to me the structure seems similar to a nested array).
As per the request below, here is the full list:
{"marketId":"1.130856098","totalAvailable":null,"isMarketDataDelayed":null,"lastMatchTime":null,"betDelay":0,"version":2576584033,"complete":true,"runnersVoidable":false,"totalMatched":null,"status":"OPEN","bspReconciled":false,"crossMatching":false,"inplay":false,"numberOfWinners":1,"numberOfRunners":10,"numberOfActiveRunners":8,"runners":[{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":2.8,"size":34.16},{"price":2.76,"size":200},{"price":2.5,"size":237.85}],"availableToLay":[{"price":2.94,"size":6.03},{"price":2.96,"size":10.82},{"price":3,"size":33.45}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832765},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":20,"size":3},{"price":19.5,"size":26.36},{"price":19,"size":2}],"availableToLay":[{"price":21,"size":13},{"price":22,"size":2},{"price":23,"size":2}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832767},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":11,"size":9.75},{"price":10.5,"size":3},{"price":10,"size":28.18}],"availableToLay":[{"price":11.5,"size":12},{"price":13.5,"size":2},{"price":14,"size":7.75}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832766},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":48,"size":2},{"price":46,"size":5},{"price":42,"size":5}],"availableToLay":[{"price":60,"size":7},{"price":70,"size":5},{"price":75,"size":10}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832769},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":18.5,"size":28.94},{"price":18,"size":5},{"price":17.5,"size":3}],"availableToLay":[{"price":21,"size":20},{"price":23,"size":2},{"price":24,"size":2}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832768},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":4.3,"size":9},{"price":4.2,"size":257.98},{"price":4.1,"size":51.1}],"availableToLay":[{"price":4.4,"size":20.97},{"price":4.5,"size":30},{"price":4.6,"size":16}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832771},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":24,"size":6.75},{"price":23,"size":2},{"price":22,"size":2}],"availableToLay":[{"price":26,"size":2},{"price":27,"size":2},{"price":28,"size":2}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":12832770},{"status":"ACTIVE","ex":{"tradedVolume":[],"availableToBack":[{"price":5.7,"size":149.33},{"price":5.5,"size":29.41},{"price":5.4,"size":5}],"availableToLay":[{"price":6,"size":85},{"price":6.6,"size":5},{"price":6.8,"size":5}]},"sp":{"nearPrice":null,"farPrice":null,"backStakeTaken":[],"layLiabilityTaken":[],"actualSP":null},"adjustmentFactor":null,"removalDate":null,"lastPriceTraded":null,"handicap":0,"totalMatched":null,"selectionId":10064909}],"publishTime":1551612312125,"priceLadderDefinition":{"type":"CLASSIC"},"keyLineDescription":null,"marketDefinition":{"bspMarket":false,"turnInPlayEnabled":false,"persistenceEnabled":false,"marketBaseRate":5,"eventId":"28180290","eventTypeId":"2378961","numberOfWinners":1,"bettingType":"ODDS","marketType":"NONSPORT","marketTime":"2019-03-29T00:00:00.000Z","suspendTime":"2019-03-29T00:00:00.000Z","bspReconciled":false,"complete":true,"inPlay":false,"crossMatching":false,"runnersVoidable":false,"numberOfActiveRunners":8,"betDelay":0,"status":"OPEN","runners":[{"status":"ACTIVE","sortPriority":1,"id":10064909},{"status":"ACTIVE","sortPriority":2,"id":12832765},{"status":"ACTIVE","sortPriority":3,"id":12832766},{"status":"ACTIVE","sortPriority":4,"id":12832767},{"status":"ACTIVE","sortPriority":5,"id":12832768},{"status":"ACTIVE","sortPriority":6,"id":12832770},{"status":"ACTIVE","sortPriority":7,"id":12832769},{"status":"ACTIVE","sortPriority":8,"id":12832771},{"status":"LOSER","sortPriority":9,"id":10317013},{"status":"LOSER","sortPriority":10,"id":10317010}],"regulators":["MR_INT"],"countryCode":"GB","discountAllowed":true,"timezone":"Europe\/London","openDate":"2019-03-29T00:00:00.000Z","version":2576584033,"priceLadderDefinition":{"type":"CLASSIC"}}}

i think i understand what you are trying to do now
first hold your data as a python object (you gave us a json object)
import json
my_data = json.loads(my_json_string)
for item in my_data['runners']:
item['selectionId'] = [item['selectionId'], my_name_here]
the thing is that my_data['runners'][i]['selectionId'] is a string, unless you want to concat the name and the id together, you should turn it into a list or even a dictionary
each item is a dicitonary so you can always also a new keys to it
item['new_key'] = my_value

So, essentially this works...with one exception...I can see from the print(...) in the loop that the attribute is updated, however what I can't seem to do is then see this update outside the loop.
mkt_runners = []
for market_catalogue in market_catalogues:
for r in market_catalogue.runners:
mkt_runners.append((r.selection_id, r.runner_name))
for market_book in market_books:
for runner in market_book.runners:
for x in mkt_runners:
if runner.selection_id in x:
setattr(runner, 'x', x[1])
print(market_book.market_id, runner.x, runner.selection_id)
print(market_book.json())
So the print(market_book.market_id.... displays as expected, but when I print the whole list it shows the un-updated version. I can't seem to find an obvious solution, which is odd, as it seems like a really simple thing (I tried messing around with indents, in case that was the problem, but it doesn't seem to be, its like its not refreshing the market_book list post update of the runners sub list)!

Python - Deleting a line from a file (To-Do List program that uses entries, different from other posts)

I have a problem with my code. I am trying to delete a specific line from a file. I am making a To-Do List program in Tkinter, and I am using a Label as the to-do list. I have two buttons, 'Add Item' and 'Delete Item'. I also have an entry box, and the buttons take the string from the entry using the .get() method. The delete button is not working because I cannot find a way to delete a line from a file that the program is using to store the list. I have looked over many other posts about the same problem, but mine is different. Whenever I run the program, and I click delete item after I fill out the text box, it deletes ALL items from the file, but I only want it to delete one item. The problem is NOT the one that #JetMashKangaroo had in this post: How to delete a line from a file in Python.
Here is the snippet of code:
def dele():
global ItemName
global Display
global List
ToDoDel = ItemName.get()
new_f = List.readlines()
List.seek(0)
for line in new_f:
if ToDoDel not in line:
List.write(line)
List.truncate()
Display['text'] = List.readlines()
ItemName is the entry box. Display is the label that displays the To-Do list. List is the variable below:
List = open('***/***/To-Do_List.txt','r+')
The program works perfectly, but I cannot add this delete function because it deletes all the text from the file. the function dele is called when the button 'Delete Item' is pressed. Help would be greatly appreciated.

The most likely reason you're running into a problem is that you are attempting to modify the list while also iterating over it. Here's an example post of someone else who ran into a similar issue.
My suggestion is that you keep track of which indexes to modify within your loop, then remove them after the loop has completed.

Searching a TreeView

I am working on a project and am using a treeview. I have done lots of searching and all ive found to my answer is to itterate through the whole treeview but not even how to do it, so my question is how do i search a treeview for an item that contains an input string. The idea will be to have an entry box and have users type something in there, when they press search items that contain what the user has input is shown. I'm not sure if i could do this in the treeview or if it will have to go into a listview. I'm on windows 7 pyqt5 python 3.5
self.treeView = QtWidgets.QTreeView(self.centralWidget)
self.treeView.setSortingEnabled(True)
self.treeView.setObjectName("treeView")
self.horizontalLayout_4.addWidget(self.treeView)
self.file_model=QtWidgets.QFileSystemModel()
self.file_model.setRootPath('C:\My Stuff\Movies')
self.treeView.setModel(self.file_model)
self.treeView.setRootIndex(self.file_model.index('C:\My Stuff\Movies'))
self.treeView.setHeaderHidden(True)
self.treeView.hideColumn(1)
self.treeView.hideColumn(2)
self.treeView.hideColumn(3)

This answer is an outline of the solution.
You may find the code I wrote for SCM Workbench useful for reference:
https://github.com/barry-scott/scm-workbench/blob/master/Source/Scm/wb_scm_table_model.py
In my app the function indexFromBookmark() I think is close to what you
want.
To start you need the root of the tree. You get that item with self.invisibleRootItem().
You can ask two interesting things of the item. Its name from item.text() and its children by calling item.child( row ) where the row starts from 0.
When the item of interest is found you can turn the item into an index using indexFromItem(). You need an index to set the selection in the tree for example.
With file names I guess you split on '\' and each items text() is the path part.

Recovering checkboxes in python Tkinter

I have a situation in which i create a few checkboxes and a 'save' button on a frame. Clicking on the button will save the current 'check status' of the checkboxes and close the frame (the frame has another frame as it's parent). The 'check status' is stored in a list in a separate .py file.
There's another button, clicking on which would i would want to restore those same check values on the check boxes. I am not sure what approach is proper here: whether to save the checkbox objects itself and load them or to create new checkboxes every time and apply the check status values on them.
This issue has taken up quite some time of mine as i am new to the python GUI concept, any help would be much appreciated.
P.S: if any details are required to make the question more clear kindly let me know.
EDIT: here's a small representation of what i have tried:
#file that generates the checkboxes (part of a bigger code)
var_list=[] #list of the variables of the checkbox objects
load_status = savedata.load() #fetch the saved status list from another file, if it exists
if len(load_status)!=0: #if the checkboxes have already been created before
for count in range(len(var_list)):
if load_status[count] == 0:
var_list[count].set(0) #set/apply the values from the status list
else:
var_list[count].set(1)
return
def check(var_list):
check_status_list=[]
for i in range(len(var_list)):
c = var_list[i].get()
check_status_list.append(c) #the status of the checkboxes that is stored in another file
var = IntVar()
var_list.append(var)
poll_check = ttk.Checkbutton(parent,variable=rr,command=lambda:check(var_list))
poll_check.place(x=x1,y=y1)
x1=x1+15
when i click on the save button the status list (check_status_list) is stored in another file. On clicking the third button ('load') i fetch the status list first and (try to) set the values on the already exsting checkbox objects.
Kindly feel free to point out the (obviously) silly mistake that this approach has.

Entry with suggestions

I'm building a small PyGTK application and I have an text input field (currently a ComboBoxEntry) which is populated with a few values that the user should be able to choose from.
I think what I want to do is to filter out the matching fields and only show those ones so the user using the keyboard arrows can choose one of the matching ones.
To give some background the predefined values are a bunch of urls and the user should be able to choose from theese or fill in a new one.
Example:
the predefined urls:
http://www.google.com
http://www.google.com/android
http://www.greatstuff.com
http://www.facebook.com
When a user types 'http://www.g'
The three URLs starting with that string is to be shown (in some way) and when typeing 'http://www.goog' the two starting with that is to be shown
Any Ideas?

An Entry with an EntryCompletion seems more appropriate than a ComboBoxEntry. As always, the tutorial is a good start.
It's very easy to set up when the predefined URLs list is small and fixed.
You just need to populate a ListStore:
# simplified example from the tutorial
import gtk
urls = [
'http://www.google.com',
'http://www.google.com/android',
'http://www.greatstuff.com',
'http://www.facebook.com',
]
liststore = gtk.ListStore(str)
for s in urls:
liststore.append([s])
completion = gtk.EntryCompletion()
completion.set_model(liststore)
completion.set_text_column(0)
entry = gtk.Entry()
entry.set_completion(completion)
# boilerplate
window = gtk.Window()
window.add(entry)
window.connect('destroy', lambda w: gtk.main_quit())
window.show_all()
gtk.main()
Users are not likely to bother typing "http://" or even "www.", so you probably want to match any part of the URL (e.g. just "og" works!):
def match_anywhere(completion, entrystr, iter, data):
modelstr = completion.get_model()[iter][0]
return entrystr in modelstr
completion.set_match_func(match_anywhere, None)
This will test every value in the ListStore for a match, so it's not scalable to huge lists (I mean huge; a 1000 works fine).
Be sure to play with the various options of EntryCompletion, to configure the most pleasant behavior.

You may want to look at how Deskbar Applet's Cuemiac does it.

Well, you obviously want to deal with prefixes so you'll probably want to use some sort of trie. Of course, there are issues to deal with. For instance, after a person has typed in a few letters ( or maybe even just one) you will want to either traverse the rest of the branches of the trie to find suggestions, or have suggestions stored in each node. A lot of these sorts of decisions depend on how many possible suggestions you plan on having.