🌐 Mailman 3 January 2022 - Tutor - python.org

Scripting Calligra sheets with Python
by Jim Byrnes Jan. 31, 2022

Jan. 31, 2022

I am trying to script Calligra Sheets (formerly KSpread) with python. I have gotten some of the included example scripts to run so I know python scripting is running. I found the following snippet on their website: import KSpread sheet = KSpread.view().sheet() # swap text of B5 and C6 t1 = sheet.text("B5") t2 = sheet.text(6,3) sheet.setText("B5", t2) sheet.setText(6, 3, t1) # swap value of D7 and E8 v1 = sheet.value("D7") v2 = sheet.value(8,5) sheet.setValue("D7", v2) sheet.setValue(8, 5, v1) Error: 'str' object has no attribute 'text' File "file:///usr/share/kde4/apps/sheets/scripts/extensions/myswap.py", line 4, in <module> This error message appeared in a dialog box. I've taught myself some Python but I don't understand what is happening here. Shouldn't t1 be a sheet object? What would cause it to be a str instead? Thanks, Jim

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pass a memory pointer to a c function
by Nathan Smith Jan. 29, 2022

Jan. 29, 2022

Hi list, Put simply, I have a c function which takes a memory pointer as one of the arguments, "An unmanaged pointer to the memory location as an IntPtr." which I am calling from a python program. I've done some digging and it looks like tempfile can write to the memory, but can I use that to then get the pointer and pass it over? More digging seems to indicate id(obj) gets the memory location for that object, but as it is a python object I'm guessing that is not much use? What I want the function to receive is the memory pointer for the data in the tempfile, rather than the python tempfile object. I've also figured out that ctypes.pointer(i) is probably what I want, where i is a ctypes.c_int(python_int) of some kind, but getting py_int to be the correct memory locations is my stumbling block Sorry in advance if my terms are off here, I'm only a passing c user and. I hope someone can point me in the right direction! Nathan -- Best Wishes, Nathan Smith, BSC My Website: https://nathantech.net

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Alphabet lookup table
by Phil Jan. 28, 2022

Jan. 28, 2022

I have a 5 x 7 font lookup table class method that returns five hex values for a character. So far I've only created six entries and being basically lazy I'm wondering if something like this has already been created, failing that, is this the correct way to go about it anyway? An Internet search didn't reveal such a module. class Alphabet: def __init__(self): self.alpha_table = {'P': ['0x7f', '0x09', '0x09', '0x09', '0x06'], 'H': ['0x7f', '0x08', '0x08', '0x08', '0x7f'], 'I': ['0x00', '0x41', '0x7f', '0x41', '0x00'], 'L': ['0x7f', '0x40', '0x40', '0x40', '0x40'], '.': ['0x00', '0x60', '0x60', '0x00', '0x00'], ' ': ['0x00', '0x00', '0x00', '0x00', '0x00'] } def get_char(self, char): return self.alpha_table[char] -- Regards, Phil

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Iterate Through a Dictionary where the Values are Tuples
by Christopher Gass Jan. 27, 2022

Jan. 27, 2022

Hello, I'm working on a project to write a script that will do some basic unit recommendations for a fire department while their usual computer system is offline. Right now it's a proof of concept, so it's not built out fully. As part of this script, I'm attempting to iterate over a dictionary where the values are tuples. More specifically, the keys are the unit numbers for the fire apparatus and the values are a tuple containing the unit type (Engine, Aid Car, etc.) and assigned station. I'm calling the tuple containing the unit type and station assignment "details" and I'm trying to then iterate through that tuple to see if the unit type and station assignment match what's being requested in the response plan. When I try to iterate through "details" however, I'm receiving a "too many values to unpack" error. Do you have a solution to this error or maybe another way I could approach the problem? Thanks for the help. position = { 'TAC_1':['BA0001', 'BA0002', 'BA0003', 'BA0004'], 'TAC_7':['DF009', 'DF010', 'DF011', 'DF013', 'DF055'] } TAC_1 = { 'BLS':[['Aid Unit', 'Engine', 'Ladder']], 'BLSN':[['Aid Unit', 'Engine', 'Ladder']], 'MED':['Medic Unit', 'Engine'], 'MEDX':['Medic Unit', ['Engine', 'Ladder'], ['Engine', 'Ladder'], 'Medical Services Officer'] } station_order = { 'BA0001':['STA 2', 'STA 3', 'STA 1', 'STA 5', 'STA 4', 'STA 6', 'STA 7', 'STA 61', 'STA 63', 'STA 82'], 'BA0002':['STA 2', 'STA 3', 'STA 1', 'STA 5', 'STA 4', 'STA 6', 'STA 7', 'STA 61', 'STA 63', 'STA 82'] } units = { 'A2':('Aid Unit', 'STA 2'), 'E2':('Engine', 'STA 2'), } def recommendations(call_type,grid): call_type = call_type.strip().upper() grid = grid.strip().upper() result = [] apparatus = [] i = 0 unit_details = () radio_position = get_radio(grid) if radio_position == 'TAC_1': radio_position = TAC_1 response_plan = radio_position[call_type] rec_station_order = station_order[grid] for unit_type in response_plan: for x in unit_type: for station in rec_station_order: for unit, details in units.items(): for u_type, unit_station in details: if u_type == unit_type and unit_station == station and unit not in result: result.append(unit) apparatus.append(response_plan[i]) i += 1 return result print(recommendations('bls','BA0001')) -Christopher Gass chris.gass.177(a)gmail.com

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Question related to Python
by Okechukwu Erinne Jan. 27, 2022

Jan. 27, 2022

Hello there, I was just going to ask how to write a program to create an output similar to the one attached to this email (with the line numbers included). Thank you, Oke.

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adding new keys to a nested dict
by mhysnm1964＠gmail.com Jan. 22, 2022

Jan. 22, 2022

Hello all I am trying to add new keys to a dict and finding the previous key is being overridden. Below is the structure: newScore {'Bar 1': { 'Time signature': "text", 'tempo': 'tempo', 'beat 1': { 'voice 1': {} }, }, } As you can tell by the code below. I am starting with an empty dict. In the code I am dynamically creating the nested dict. I am finding when I add the time signature key under the 'bar 1' dict node. It is being overridden, rather than adding a new key. Not sure why this is occurring. I can add nested dicts with one key value. I want to be able to insert a new key and keep the existing keys in that dict node as outline. newScore = {} bar = '' # stores the current bar being worked upon. beat = '' # stores the current beat being worked upon. voice = '' # stores the current voice being worked upon. for notation in score: if notation[0] == 'Barline Single barline': notation.pop(0) # remove the matched pattern. for word in notation: if word.startswith('Bar'): if word not in newScore: bar = word newScore[bar] = {} elif word.startswith('Beat'): if word not in newScore[bar]: beat = word voice = 'Voice 1' newScore[bar][beat] = { voice: []} #else: #newScore[bar][beat][voice].append(word) elif notation[0].startswith('Vertical Frame'): if 'Vertical Frame' not in newScore: newScore['Vertical Frame'] = notation elif notation[0].startswith('Time Signature'): # include time signature regardless if it is the same under the right beat and voice. #print (notation) newScore[bar] = {'Time Signature': notation[0]} # newScore[bar]['Time Signature'] = notation[0] # syntax error elif notation[0].startswith('Treble clef'): #print (notation) newScore[bar]['clef'] =notation[0] elif notation[0].startswith('Rest '): print (notation) for i in range(0, len(notation)): if notation[i] == beat: notation.pop(i) # remove the word beat value. # newScore[bar][beat][voice].append(notation) I keep getting syntax errors or the 'beat' and other keys within the 'bar 1' are removed only leaving the last dict key. It only occurs in the nested dict. What am I doing wrong.

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a list of tuples with varying lengths
by Phil Jan. 20, 2022

Jan. 20, 2022

I hope the following makes sense to you and I'm not sure that I should even post such a vague question. What I need is s, d to = (0, 4) during the first time interval and then s, d = (0, 3) and (1, 4) the second time. There are many time intervals, this is just the first two. My solution is to have a look_up table that looks something like this, the first three entries are: table = [[(0, 4)], [(0, 3), (1, 4)], [(0, 2), (1, 3), (2, 4)]] The first entry has 1 tuple the second entry has 2 tuples the third has 3 tuples, etc My first thought was to extract the tuple values with a for-loop with a variable range, like this: for s, d in range(len(table[index])) but that idea ended in failure. I cannot see a simple way to calculate the values even though there is a pattern and so a look-up table seems like a good idea. I've spent days on this and have made little progress so any ideas will be greatly appreciated. -- Regards, Phil

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How to update only set CLI args?
by Leam Hall Jan. 18, 2022

Jan. 18, 2022

Writing a CLI app in Python 3.10. There's a "defaults" dict, a config file that gets read into a dict, and command line arguments that can be passed in. defaults = {'table':'people'} defaults.update(config) defaults.update(vars(args)) The issue is that if an argument is not set on the command line, the args.item has a value of "None", which then overwrites any value in defaults or config. How do I update just the set args? Thanks! Leam -- Site Automation Programmer (reuel.net/resume) Scribe: The Domici War (domiciwar.net) General Ne'er-do-well (github.com/LeamHall)

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python update
by Jessica Jones Jan. 15, 2022

Jan. 15, 2022

hi i have installed python in windows. I see there are many updates all the time Can my python update itself or do i have to uinstall it, download it, reinstall it each time again? Sent with [ProtonMail](https://protonmail.com/) Secure Email.

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download
by massimo andriolo Jan. 14, 2022

Jan. 14, 2022

Hello, I have made the download PYcharm but when I run it it says configuration incorrect... What I should do?

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