[Q] Function Point Analysis (FPA) - Equivalent lines of code of Python

Hi, In FPA, there are tables which shows equivalent lines of code for each Function Point (FP) for a number of programming languages. e.g. http://www.qsm.com/?q=resources/function-point-languages-table/index.html However, I have yet to find the figures for Python. Is someone able to advise the closest language equivalent. Regards

executing script in fork

Hi There, I want to trigger another script and having it running forked to my mother process. I googled around and came up with following: commandlist=['./GPSsim.pl',proto,'files/gps.txt'] subprocess.Popen(commandlist) print "GPS simulator started" This however doesn't seem disconnect stdout but it still throws me back to the shell. How can I launch it with disconnected stdout and still continue running further code in my mother script? Thanks, Ron

cPickle segfault with nested dicts in threaded env

Hi all, Before creating an issue @ bugs.python.org I wanted to run the following by everyone We are having a difficult time with what looks like a cPickle issue when given a data structure containing >15 nested dictionaries, but only when threading is involved Environment is FreeBSD 8, Python 2.5.5 The following diff contains an addition for /usr/ports/lang/python25/work/Python-2.5.5/Lib/test/test_cpickle.py which reproduces the issue kenneth@kenneth0 Python-2.5.5 $ cat /tmp/test_cpickle.nested_dicts_in_threaded_env.diff 1a2 > import copy 2a4 > import threading 93a96,

are there pros or contras, keeping a connection to a (sqlite) database ?

hello, I wrap my database in some class, and on creation of the instance, a connection to the database is created, and will stay connected until the program exists, something like this: self.conn = sqlite3.connect ( self.filename ) Now I wonder if there are pros or contras to keep the connection to the database continuously "open" ? thanks, Stef Mientki

Why Insulation is a Good Investment

Why Insulation is a Good Investment Investing in products to make homes more energy efficient pays significant dividends over a lifetime =97 with none of the wild fluctuations of Wall Street. Insulation contributes to: - Greater comfort - Even temperature distribution - Improved acoustics - Better moisture control, which can reduce floor squeaks, drywall cracks, structure damage and condensation - Potential for increased resale value: Installing proper insulation levels can also make your home more attractive to potential buyers. In fact, most buyers list energy-efficiency as a

console-editor written in python

hi there, greetings. i am looking for a small, console-based (opensource) texteditor, written in python (or as shellscript!), but i'm not finding something usable. very find would be emacs-keybindings ... dank u well, tanja

formatted input

Hi All, I have another question about formatted input. Suppose I am reading a text file, and that I want it to be something like this word11 = num11, word12 = num12, word13 = num13 etc... word21 = num21, word22 = num12, word23 = num23 etc... etc... where wordx1 belongs to a certain dictionary of words, say dic1, while wordx2 belongs to dic2, the numbers within some range and so on. I was wondering if there is something in the standard library I may use to check whether the file I am reading has a correct syntax according to my rules/dictionaries instead of implementing my own rou

Bug in Python 2.6 urlencode

There's a bug in Python 2.6's "urllib.urlencode". If you pass in a Unicode character outside the ASCII range, instead of it being encoded properly, an exception is raised. File "C:\python26\lib\urllib.py", line 1267, in urlencode v = quote_plus(str(v)) UnicodeEncodeError: 'ascii' codec can't encode character u'\xa9' in position 0: ordinal not in range(128) This will probably work in 3.x, because there, "str" converts to Unicode, and quote_plus can handle Unicode. This is one of those legacy bugs left from the pre-Unicode era. There's a workaround. Cal

Volunteer help with porting

Hi everyone, My name is Prashant Kumar and I wish to contribute to the Python development process by helping convert certain existing python over to python3k. Is there anyway I could obtain a list of libraries which need to be ported over to python3k, sorted by importance(by importance i mean packages which serve as a dependency for larger number of packages being more important). I had originally mailed the python-dev mailing list and was pointed to this ML so that I could get details regarding 3rd party libraries which need to be ported. Thanks, Prashant Kumar

another way to sort like l.sort(key=lambda x:(x[0][0], -x[1][0]))

I have a list of tuples. l = [((30,50),(70)), ((50,20),(20))] for i in range(10): k = ((i+30,i+50),(i+70))#suppose creating new tuple in each iteration using some random value and in sert it into list. flag=True for i, v in enumerate(l): if v >= k: l.insert(i,k) flag = False break if flag: l.append(k) This code will give a list of tuples sorted in asc order. I need to change this code to sort this list by k[0][0] ascending and k[0][1] descending. What are the modifications needed in this code. I dont want to user sort() method of list

How to determine if a Python script is being run right after startup on Windows

Hello! I'm a newbie to Python (literally just started last Saturday), and I coded a program that selects a random wallpaper from a directory and swaps it with your current one (Windows only.) What I'm looking to do is have it start up with Windows and automatically swap the wallpapers. This part I have already coded, and as far as I know, it should work. However, I want the user to be able to access the GUI after this initial running of the program. The way it is set up now, enabling "Start Up Mode" will cause the program to cycle the wallpapers and then immediately exit. My qu

Minimum and Maximum of a list containing floating point numbers

I have a list like ['1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.7689', '1.7689', '3.4225', '7.7284', '10.24', '9.0601', '9.0601', '9.0601', '9.0601', '9.0601']. What I want to do is to find minimum and maximum number in this list. I used min function, s = ['1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.1881', '1.7689', '1.7689', '3.4225', '7.7284', '10.24', '9.0601', '9.0601', '9.0601', '9.0601', '9.0601'] print min(s) print max(s) these gives me 1.181 9.0601 ma

using modules

The following code runs OK under 3.1: @filename=cats_and_dogs.py #!/usr/bin/python def make_sound(animal): print(animal + ' says ' + sounds[animal]) sounds = { "cat": "meow", "dog": "woof" } for i in sounds.keys(): make_sound(i) # output: # dog says woof # cat says meow When I move the def to it's own file to create a module, it barfs: @filename= cats_and_dogs.py #!/usr/bin/python import defs sounds = { "cat": "meow", "dog": "woof" } for i in sounds.keys(): defs.make_sound(i) @filename=defs.py def make_sound(animal): print(animal + '

redirecting stdout and stderr for a windows service

Hi all, I am trying to redirect stdout and stderr on a python windows service, so that the service will not stall after 256 chars is written, and so I can use print for simple debugging. I have the following 4 lines (copy/pasted) in the source of my code. if __name__ == '__main__': sys.stdout = sys.stderr = open("d:\logfile.txt", "a") print "Starting up" win32serviceutil.HandleCommandLine(PythonService) When I run them as a free standing program, logfile.txt is created the text placed in it, and it crashed on the last line - no permissions to create a serv

Learning variable visibility

Hi How do I declare a variable visibility across files? Will import name where name is name of the file do? Thanks for instructing Niklas Rosencrantz

MAKE UPTO $5000 P/M $2000 IN FIRST 30 DAYS! NO INV

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accessing a text file

level: beginner how can i access the contents of a text file in Python? i would like to compare a string (word) with the content of a text file (word_list). i want to see if word is in word_list. let's assume the TXT file is stored in the same directory as the PY file. def is_valid_word(word, word_list) thanks Baba

Extracting item from list of tuples?

I'm using httplib, and want to get the Location header from the response. The getheaders() method gives you back a list of (name, value) tuples. It would be a lot more convenient if it gave you back a dict, but it is what it is. Anyway, I came up with: location = [t[1] for t in headers if t[0] == 'location'][0] which works, but is getting on towards the cryptic end of things. Is there a better idiom for this?

doctest annoyance/puzzle

I'm writing a "literate programming" document, example.txt, which mixes text and code in ReST format: This is my excellent module for making spam. It has one public function, ``make_spam``, which takes a single argument for how much spam to make: >>> from module import make_spam >>> make_spam(3) 'spam spam spam' If you ask for too little spam, you get a bonus: >>> make_spam(-3) 'spam spam spam GLORIOUS SPAM!!!' I run the doctests with: python2.6 -m doctest examples.txt and the first example passes, but the second fails with NameError: ma

High CPU utilization with Pylab

I am trying to plot a runtime graph using pylab. But the very purpose of functionality is lost because of high CPU percentage hogged by plotting the graph. Here is the piece of code which I have written. def timerfunc(ulcm, dlcm): count=0 xaxis=[] yaxis=[] ion() while 1: xaxis.append(count) dr=(((dlcm.sum)/dlcm.timer)*8) dlcm.counter=0 yaxis.append(dr) dlcm.sum=0 h=plot(xaxis,yaxis,'b') draw() count=count+1 time.sleep(dlcm.timer/1000.0) if (count>100): xlim(cou

Subclassing by monkey-patching

I'm attempting to implement a recursive directory monitor based on the GIO file monitor in PyGTK. My approach is basically to take the gio.FileMonitor returned by the method gio.File.monitor_directory(), connect to the "changed" signal, and add or remove monitors on create/ delete events for subdirectories. I'd really like to do this by subclassing gio.FileMonitor. But the problem I'm having is that it's never explicitly initialised in user code (but somewhere in gio.File.monitor_directory() ). So there's no point in just declaring a subclass =97 where would I actually create an ins

Question about Reading Files

Hello. I am still really new to python and I have a project where I am trying to use the data files from another program and write a new program with new user interface and all. My first step was to open one of the files in 'rb' mode and print the contents, but I am unfamiliar with the format. Here is what was printed to the terminal: b'URES\x04\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0f \x00\x00\x00\x03\t\x00c\x01\x00\x00\x0c#\x00\x00\x02\x1b\x00\x00\x00Y \x00\x00\x00\x08\x98"\x00\x00t\x00\x00\x00\x01\'\x01\x00\x00z$ \x00\x00\x04,\xa7\x00\x00\xa1%\x00\x00\x05\x0b\x00

Error in Following python program

#/usr/bin/python from numpy import matrix n=input('Enter matrix range') fr=open('mat.txt','r') print ('Enter elements into the matrix\n') a=matrix([[input()for j in range(n)] for i in range(n)]) for i in range(n): for j in range(n): print a[i][j] print '\n' When i run the above program the following error is Coming please Error is Enter matrix range3 Enter elements into the matrix 1 2 3 4 5 6 7 8 9 [[1 2 3]] Traceback (most recent call last): File "2.py", line 10, in <module> print a[

what should __iter__ return?

Hi, What is better: def __iter__(self): for i in len(self): yield self[i] or def __iter__(self): return iter([self[i] for i in range(len(self))]) The first one, I would say is more correct, however what if in a middle of an iteration the object changes in length? Then, the iterator will fail with IndexError (if items have been removed), or it will fail to iterate over the whole sequence (if items have been added). What do you think? Cheers. Ernest

pyqt signals

Hello i have write this but i not able to connect the emit of the class Socket to the Form class, can you help me? class Socket(QtNetwork.QTcpSocket): def __init__(self, parent=None): super(Socket, self).__init__(parent) self.connect(self, QtCore.SIGNAL("readyRead()"), self.leggi_richiesta) def leggi_richiesta(self): messaggio = self.readData(self.bytesAvailable()) print 'dati_letti = ', messaggio self.emit(QtCore.SIGNAL("messaggio"), messaggio) print 'segnale emesso' class Form(QWidget, Ui_Form): """ Class doc