🌐 Mailman 3 September 2015 - 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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Desktop Notifications on Linux
by Dharmit Shah June 29, 2017

June 29, 2017

Hi all, I am trying to create a script that will go through the /var/log/secure file on a Linux system and provide desktop notifications for failed login attempts. Here is the code - http://pastebin.com/MXP8Yd91 And here's notification.py - http://pastebin.com/BhsSTP6H I am facing issue in the function "new_attempts_from_last". I am not able to raise a desktop notification from this function. It always fails with this traceback - http://pastebin.com/cgHMScv3 I see this error only when I try to raise a notification from the aforementioned function. If I run test examples under /usr/share/doc/notify-python/examples, it works just fine. Also, if I try to raise a notification from under if __name__ == "__main__":, it works without any issues. So I don't think there's any issue with OS's notification daemon. Running from python shell like below also works fine: In [1]: import notification In [2]: notification.notification("Hey") What am I missing or doing wrong here? If it matters, I am running Fedora 20, python 2.7 and Cinnamon desktop environment. For readability purposes, I have provided pastebin links. Let me know if this is not the correct way. Regards, Dharmit.

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Option on How to create web Interface
by fabu desay March 9, 2016

March 9, 2016

If I got the problem correctly,you can equally create + open a file file = open(filename,+wr) The file should have the HTML extension You can now pace your web contents in the file.html you created that should work by trigering the python file you programed in and it inturn creates the website or pages of your choice an example like this could help webpage = open('index.html', 'w+') webpage.write("<html><head><title>My web page</title></head>"); webpage.write("<body>This the body</body></html>"); webpage.close()

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Custom Function that Takes argument
by Nym City Oct. 31, 2015

Oct. 31, 2015

Hello, I am learning how to create custom functions and watched the tutorial online that uses API for locu to do cool stuff. I wanted to go little bit beyond the tutorial and add my own features. The problem that I am running into is that I cannot figure out how to prompt a user to input their zip code and use that information against the function. here is my code: import urllib2 import json locu_api = 'not included here for obvious reasons' zip = raw_input('What is your zip: ') def zip_search(query): api_key = locu_api url = 'https://api.locu.com/v1_0/venue/search/?api_key=' + api_key zip = query.replace(' ', '%20') final_url = url + '&zip=' + zip + "&category=restaurant" jason_obj = urllib2.urlopen(final_url) data = json.load(jason_obj) for item in data['objects']: print item['name'], item['phone'], item['street_address'], item['categories'] print zip_search(zip_search()) Thank you.

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How to calculate the cumulative normal distribution
by Michel Guirguis Oct. 2, 2015

Oct. 2, 2015

Good afternoon, How to calculate the cumulative normal distribution function CND in order to use this figure to calculate the call option based on the Black and Scholes model. >>> from math import* >>> def CND(X): m = abs(X) [a1,a2,a3,a4,a5]=(0.31938153,-0.356563782,1.781477937,-1.821255978,1.330274429) k = 1/(1+0.2316419*m) CND1 = 1.0-1.0/ sqrt(2*3.1415)* exp(-m*m*0.5) CND2 =(a1*k + a2*k*k+a3*k*k*k+a4*k*k*k*k+a5*k*k*k*k*k) CND = CND1*CND2 >>> d1=(math.log(S/K)+(r-q+(sig*sig)*0.5)*T)/(sig*math.sqrt(T)) >>> d1 0.10606601717798211 >>> d2 =d1-sig*math.sqrt(T) >>> d2 -0.03535533905932742 >>> call = 50*exp(-0.02*0.5)*CND(d1)-50*exp(-0.03*0.5)*CND(d2) >>> call Thanks, Michel

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Python Optical Character Recognition
by Sebastian Cheung Sept. 30, 2015

Sept. 30, 2015

How to read a jpg or png file into python and extract text thanks. I would imagine getting small symbols like ; or , to be difficult? Any good framework like this? Seb Sent from my iPhone

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Regarding installing a python package
by Chirag Shahani Sept. 30, 2015

Sept. 30, 2015

Hi, Could any one please help me understand the following: Suppose I install a python package using python setup.py install provided by the developer of a package. I need to track that changes in my file system.. meaning what new directories and files got created? Also, what is the concept of the egg file that gets created? What would be the location of this egg file and how would it be named ****.egg? Also, the ***.egg-info directory? Thanks in advance. -- Chirag

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Beautiful Soup
by Crusier Sept. 29, 2015

Sept. 29, 2015

Hi I have recently finished reading "Starting out with Python" and I really want to do some web scraping. Please kindly advise where I can get more information about BeautifulSoup. It seems that Documentation is too hard for me. Furthermore, I have tried to scrap this site but it seems that there is an error (<http.client.HTTPResponse object at 0x02C09F90>). Please advise what I should do in order to overcome this. from bs4 import BeautifulSoup import urllib.request HKFile = urllib.request.urlopen("https://bochk.etnet.com.hk/content/bochkweb/tc/quote_transaction_daily_hist…") HKHtml = HKFile.read() HKFile.close() print(HKFile) Thank you Hank

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skip/slice more than every second?
by questions anon Sept. 29, 2015

Sept. 29, 2015

a = [1,2,3,4,5,6,7,8,9,10,11,12,13,14] how can I show the first then skip three and show the next and so on? For example: show 1 then skip 2,3,4 then show 5 then skip 6,7,8 then show 9 then skip 10,11,12, etc. Any feedback will be greatly appreciated.

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Python type confusion?
by Ken Hammer Sept. 29, 2015

Sept. 29, 2015

A simple "type" problem? The following code works as a py file with the XX'd lines replacing the two later "raw_input" lines. Why do the "raw_input" lines yield a TypeError: 'str' object is not callable? Same result if I use/omit the parens around the poly tuple. #### evaluate a polynomial as formula for a defined function ##poly = (0.0, 0.0, 5.0, 9.3, 7.0) # f(x) = 7x^4 + 9.3x^3 + 5x^2 ##x = -13 poly = raw_input("Type, 0.0-n ,") ## these do not work in place of above x = raw_input("Type your val of x, ") ## 'str' object is not callable? total = 0.0 for i in range(len(poly)): totalTerm = poly[i]* (x ** i) total += totalTerm print "totalTerm ", i , totalTerm print "Equation Value", total #### Good answer follows: totalTerm 0 0.0 totalTerm 1 0.0 totalTerm 2 845.0 totalTerm 3 -20432.1 totalTerm 4 199927.0 Equation Value 180339.9 >>> thanks, Ken Hammer

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