🌐 Mailman 3 September 2016 - 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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Testing print
by boB Stepp Oct. 2, 2016

Oct. 2, 2016

Testing output of print functions (Py 3). First off, is it worth it to do so? Second, it seems that prints are often intermingled with the main logic of a function and only serve to pass on a message to the user. For example, in an earlier thread ( Questions as to how to run the same unit test multiple times on varying input data.: https://mail.python.org/pipermail/tutor/2016-September/109686.html) I finally wound up with this function: def right_justify(a_string): '''This fucntion will take the string, "a_string", and right justify it by padding it with spaces until its last character falls in column 70 of the display. The padded string will be returned.''' if len(a_string) <= 70: num_pad_spcs = 70 - len(a_string) return (' ' * num_pad_spcs) + a_string else: print("The string has too many characters (> 70)!") print("Only a partial, 70 character line will be returned.") return a_string[:70] I had to consider the possibility that the string supplied to the function was more than 70 characters long. The exercise in "Think Python2" did not give any input into how to handle such a case, so I decided I would return 70 characters worth of the overly long string and print a message to the user. So (Even though this is a simple exercise.) should I test the prints? And if so, how to I separate this out? In my mind, if I am going to be testing calls to print, then perhaps I should write a separate function, say "print_msg(msg)" and put that in place of the prints in the else clause and then test the print_msg function, where "print(msg)" would be isolated in its own little function to be tested.. Anyway, it would seem that the only way to capture the output of a print is to redirect the stdout to something I can capture and compare against. Googling brings up some people doing something with mock objects, some redirecting to a string buffer, some to a file, some to other things. What, in your opinion(s), is the cleanest way to handle this? -- boB

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Passing functions as arguments to other functions
by boB Stepp Oct. 1, 2016

Oct. 1, 2016

I believe I understand the barebone mechanics on how to do this. But I do not understand the rationale of why Python does it the way it does. Say def f(g, *args): g(*args) def g(*args): # Do something. do_things = f(g, *args) is the outline of how I understand the mechanics of doing this. But noob boB initially want to do instead: def f(g(*args)): g(*args) def g(*args): # Do somenthing. do_things = f(g(*args)) which, of course, will give me a syntax error. Also, I note that if I just type a function name without the parentheses in the interpreter, I will get something like this: >>> def f(): pass >>> f <function f at 0x000001F775A97B70> So the impression I am getting is that a function name by itself (with no parentheses) is the function *object*. But why does Python require separating the function object from its parameters when it is being passed as an argument to another function? -- boB

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NumPy and SciPy
by Floeck, Thomas Sept. 29, 2016

Sept. 29, 2016

Hi there, you have an idea where I can find NumPy and SciPy windows *.exe-files for Python 3.5? Thanks for any help!

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Need help
by niraj pandey Sept. 28, 2016

Sept. 28, 2016

Hi, I am new in python. Could you guys please help me to short this code ? Want to write this iteration (Yellow one) using loop. r = 0 L1 = Label(bg = 'orange', text="Flat_No", relief=RIDGE,width=30) L1.grid(row=0,column=0) E1 = Entry(relief=SUNKEN,width=30) E1.grid(row=0,column=1) L2 = Label(bg = 'orange', text="Mains Unit", relief=RIDGE,width=30) L2.grid(row=1,column=0) E2 = Entry(relief=SUNKEN,width=30) E2.grid(row=1,column=1) L3 = Label(bg = 'orange', text="DG Unit", relief=RIDGE,width=30) L3.grid(row=2,column=0) E3 = Entry(relief=SUNKEN,width=30) E3.grid(row=2,column=1) L4 = Label(bg = 'orange', text="Month", relief=RIDGE,width=30) L4.grid(row=3,column=0) E4 = Entry(relief=SUNKEN,width=30) E4.grid(row=3,column=1) MyButton1 = Button(top, text="Submit", width=10, bg='red', command=lambda: database.data(E1.get(), E2.get(), E3.get(), E4.get())) MyButton1.grid(row=8, column=1) The output should be like this : [image: Inline image 1] Thanks Niraj -- Success occurs when opportunity and preparation meet

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differences between map and partial?
by source liu Sept. 28, 2016

Sept. 28, 2016

Hi, List the test code as attached first i tried map, and failed, then i turned to partial from functools the latter one works, i wonder if there is unseen tricky from me between them :) this one works >>>>print p.map(partial(file_op,lineop=unity),input) this one doesn't work >>>>print p.map(lambda x:file_op(x,unity), input) Thanks. -- Liu An Institution of modern physics, Shanghai, China

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TDD in Python
by angela ebirim Sept. 27, 2016

Sept. 27, 2016

Hello everyone, I'm a new member on this maling list and am in the process of learning python. I'm keen to learn about testing my Python code and hoping someone could help me with this query... #test.py class Test: def __init__(self, members): self.members = members def printMembers(self): print('Printing members of Test class...') for member in self.members: print('\t%s ' % member) test = Test(['Gazelle', 'Elephant', 'Lion', 'Fish']) test.printMembers() #test_test.py import unittest from test import Test class TestTestCase(unittest.TestCase): """Tests for `test.py`.""" #preparing to test def setUp(self): """Sample test case""" print "TestTest::setUp_:begin" # self.members = [1, 2, 3, 4, 5] self.members = Test([1, 2, 3, 4]) def test_is_printMembers(self): """Will print a list of contents?""" self.assertTrue(self.members.printMembers) if __name__ == '__main__': unittest.main() Does my test code in test_test.py look correct? Many thanks

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Help!!
by Shooby Herrmann Sept. 27, 2016

Sept. 27, 2016

Hi, I am using JES. I need to write a program and find all pixels in a circle and in a square. Here is what I have written with the more detailed purpose of the program. I know this is not correct, but I'm not sure how to fix it. Please help. #The purpose of this assignment is to give you practice in function calls and if statements. Your program will have the user #to draw a random circle and a random rectangle and to guess which shape has more pixels. It will time how long the user #takes to do this and will connect the circle, the rectangle, and the outline of the picture with colored lines. from random import* def main(): #Make an empty white 500x500 picture. pic= makeEmptyPicture(500, 500, white) #Assign variable radius to random value from 10 to 120 (Why this range?). radius= randrange(10, 121) xCircle= randrange(0, 501) yCircle= randrange(0, 501) #Draw a circle with this radius anywhere in the picture - show the whole circle inside the picture. circle= addOvalFilled(pic, xCircle, yCircle, radius, radius) #Assign the variable numPxCircle to the number of pixels in this circle. numPxCircle= getPixels(pic) #Assign variables x and y to random values from 5 to 200 (Why this range?). x= randrange(5, 201) y= randrange(5, 201) #Assign variables width and height to random values. # - find the ranges of the values that will show the whole rectangle inside the picture. w= randrange(0, 501) h= randrange(0, 501) #Draw a green rectangle at the position (x,y) with this width and height on the picture: # - (x, y) is the upper left-hand corner of the rectangle. #Assign the variable numPxRectangle to the number of pixels in this rectangle. rectangle= addRectFilled(pic, x, y, w, h, green) numPxRectangle= getPixels(pic) #Show the picture. show(pic) #Ask the user, "Which one has more pixels (type 'r' or 'c')?" info= requestString("Which one has more pixels? (type r or c).") #If the answer is correct, fill the circle with red and pop up an information box saying "Congratulations!". if info== (numPxRectangle >= numPxCircle) : showInformation("Congradulations!") #If the answer is incorrect, pop up an information box saying "Sorry. Bye!" #(Make sure that the full circle and the full square are shown inside the picture.)

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Unicode to Ascii
by srinivas devaki Sept. 27, 2016

Sept. 27, 2016

How can I convert Unicode to Ascii by stripping of any non ascii characters. one way is to filter on s like ascii = ''.join(filter(lambda x: 0 <= ord(x) < 256, unicode_string)) but are there any other simple ways ? Regards Srinivas Devaki Senior (final yr) student at Indian Institute of Technology (ISM), Dhanbad Computer Science and Engineering Department ph: +91 9491 383 249 telegram_id: @eightnoteight

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