Re: eval to dict problems NEWB going crazy !
manstey wrote:
That doesn't work. I just get an error:
x = eval(line.strip('\n'))
File string, line 1
[('recId', 3), ('parse', {'pos': u'np', 'gen': u'm'})]
SyntaxError: unexpected EOF while parsing
is the last line of your file empty ??
what with
for line in filAnsMorph:
# remove any trailing and leading whitespace includes removing \n
line = line.strip()
# Get rid of comment lines
if line.startswith('#'):
continue
# Get rid of blank line
if line == '':
continue
#do the job
x = eval(line)
NB by default strip() removes leading and trailing characters from the target
string. with whitspace defined as whitespace = '\t\n\x0b\x0c\r '
Eric
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Re: getting current UNIX uid
Johhny wrote: Hello, I am trying to get the user that is running the scripts uid, I have had a look at the pwd module and it does not appear to offer that functionality. Is there any way within python to get that information ? eg: username = pwd.getpwuid(os.getuid())[4] Eric -- http://mail.python.org/mailman/listinfo/python-list
Re: Way for see if dict has a key
Bruno Desthuilliers wrote: Fredrik Lundh wrote: Bruno Desthuilliers wrote: on my machine, key in dict is about twice as fast as the full try/getitem construct when the key is present in the dict, Doesn't it depends on the number of keys in the dict ? why would it depend on the number of keys in the dict ? /F Seems that if key in dict do a simple linear search, it depends on the number of keys in dict (and the position of the searched key etc...). And if I'm missing the point and you it and you know why, it would be simple to explain than to answer my question with another question. maybee we can imagine that key in dict just perform try: dict[key] return True except KeyError: return False If I understand correctly, it will be time constant no ?? just the needed time to compute the hash for the key Eric -- http://mail.python.org/mailman/listinfo/python-list
Re: combined files together
Gary Wessle wrote: I need to traverse those files in the order they were created chronologically. listdir() does not do it, is there a way besides build a list then list.sort(), then for element in list_of_files open element? are the name of the files describing the cration date, or have to rely on the creation date ? if the name allows to discriminate the chronology, check glob module. Eric -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a list of dictionaries by dictionary key
Nico Grubert wrote:
Hi there,
I am looking for a way to sort a list containing dictionaries.
This is my example list:
[{'Title': 'ABC', 'from_datetime': DateTime('2006/04/25 12:45:00
GMT+2')}, {'Title': 'DEF', 'from_datetime': DateTime('2006/04/18
12:45:00 GMT+2')}, {'Title': 'GHI', 'from_datetime':
DateTime('2006/03/10 12:45:00 GMT+2')}]
I want to sort the list by dictionary's key 'from_datetime' so the
sorted list should be:
[{'Title': 'GHI', 'from_datetime': DateTime('2006/03/10 12:45:00
GMT+2')}, {'Title': 'DEF', 'from_datetime': DateTime('2006/04/18
12:45:00 GMT+2')}, {'Title': 'ABC', 'from_datetime':
DateTime('2006/04/25 12:45:00 GMT+2')}]
Any idea how I can sort this list?
sort can take a comparaison function. which specification are
takes 2 elements
returns a negative value if elem1 is lesser than elem2
returns a positive value if elem1 is grater than elem2
returns zero if elem1 == elem2
you may write such fuction
def dictionary_datetime_sorter(d1, d2):
date1 = d1['from_datetime']
date2 = d2['from_datetime']
if date1 date2: return -1
elif date1 date2: return 1
else: return 0
you'll have to find out how to compare 2 DateTime
and then, in order to sort your list
your_dictionary_list.sort(dictionary_datetime_sorter)
Eric
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« Voyons-voir : est-ce que ma question est vraiment conne ? Oh oui,
vraiment trop conne, je vais poster dans premiers-pas, je posterai
dans configuration quand je serai moins con. »
-+-JLC - Guide du Neuneu d'Usenet - Bien configurer sa question -+-
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Re: Sorting a list of dictionaries by dictionary key
bruno at modulix wrote: Eric Deveaud wrote: (snip) sort can take a comparaison function. The problem with it is that it may slow down things a lot... point taken. I have to purge my mind from the other programing languages I practice. ;-) Eric -- http://mail.python.org/mailman/listinfo/python-list
Re: create pixmap from data
Thomas Girod wrote: Hi there. I have a list containing integer values from 0 to 255. With this list I have informations width and height, as width * height = len(my_list) What I want to do is to convert this array into a pixmap of dimension width * height in order to draw it inside a pygtk GUI. Any suggestions about a way to display those informations ? check the PIL (Python Imaging Library), Image module Eric -- S Je cherche aussi des adresses de lieux contenant des fossiles dans S la région parisienne http://www.senat.fr/ -+- DP in http://www.le-gnu.net : La dianurette et les fossiles -+- -- http://mail.python.org/mailman/listinfo/python-list
Re: Initializing defaults to module variables
Burton Samograd wrote: Hi, I'm writing an app that stores some user configuration variables in a file ~/.program/config, which it then imports like so: import sys from posix import environ sys.path.append(environ[HOME]+/.program) import config I can then access the configuration through code like: login(config.username) better use some plain text configuration file check ConfigParser documentation. So I guess the real question is: Is there a way to create a module namespace and populate it before sourcing the file? if you take a look at how naming space is affected by the variants from module import * and his conterpart import module, you will have your answer. shortly if you use import foo all the variables/class/functions comming from the module foo are located in a globlal space dictionary named foo if you use form foo import * all variables/class/functions comming from the foo module are located in gloabal space naming dictionary. try this -=-=-=-=-=-=- consider module foo.py -=-=-=-=-=-=- my_var = my var from foo -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- hebus:~/tmp python Python 2.4.2 (#1, Mar 22 2006, 12:59:23) [GCC 3.3.5 (Debian 1:3.3.5-5)] on linux2 Type help, copyright, credits or license for more information. import foo print my_var Traceback (most recent call last): File stdin, line 1, in ? NameError: name 'my_var' is not defined and now hebus:~/tmp python Python 2.4.2 (#1, Mar 22 2006, 12:59:23) [GCC 3.3.5 (Debian 1:3.3.5-5)] on linux2 Type help, copyright, credits or license for more information. from foo import * print my_var my var from foo this will lead to a solution regarding your problem hebus:~/tmp python Python 2.4.2 (#1, Mar 22 2006, 12:59:23) [GCC 3.3.5 (Debian 1:3.3.5-5)] on linux2 Type help, copyright, credits or license for more information. my_var = 'some default value' from foo import * print my_var my var from foo once again, I bet your best choice will be to have some plain text config file Eric -- Je voudrais savoir s'il existe un compteur de vitesse (?) pour savoir à quelle vitesse on est réellement connecté au FAI et surtout si une telle bête existe... où la trouver. -+- RJ in: Guide du Neuneu d'Usenet - Baisse la tête et pédale -+- -- http://mail.python.org/mailman/listinfo/python-list
Re: Iterating command switches from a data file - have a working solution but it seems inefficient
News wrote: Hi everyone, My goal is to pull command switches/options from a file and then assign the values to select variables which would eventually be included in a class object. The data file looks something like this but the switches could be in any order and not all may be used. -m quemanager -s server -p port -k key -o object -c 20 -t [EMAIL PROTECTED] Also, please keep in mind that the source code will have more than one line in it and each has to be treaded separately. I suggest you use getopt or optpase to perform this task those modules are designed to perform what you want, with error checking import getopt inp = open(const.txt,r) for line in inp: try: opt, args = getopt.getopt(iline.split(), 'c:k:m:o:p:s:t:i') print opt except getopt.GetoptError, msg: # handle the error as you need Eric -- Je voudrais savoir s'il existe un compteur de vitesse (?) pour savoir à quelle vitesse on est réellement connecté au FAI et surtout si une telle bête existe... où la trouver. -+- RJ in: Guide du Neuneu d'Usenet - Baisse la tête et pédale -+- -- http://mail.python.org/mailman/listinfo/python-list
Re: Iterating command switches from a data file - have a working solution but it seems inefficient
News wrote: bruno at modulix wrote: Have you looked at optparse ? I have. The module optparse seemed to be aimed at reading from commandline versus pulling attributes from a read line. hu lets see optparse seems to be reading from commandline. that's not false but not really true ;-) point 1: remember that commandline reading is done thru sys.argv wich provide a a list of strings point 2 now consider pulling datas from readline, wich return a string. if you split this string you'll have a list of string. point 3 optparse is designed for reading from a list of strings I let the conclusion to your imagination ;-)) Eric -- Salut,Je m'appele sed.je suis etudiant en communication, j'ai lu votre message.je viens vous dire un petiit bonjour,et vous laisser mon mél: vous pouvez me repondre maintenant si vous étez conecter. -+-Guide du Neuneu d'Usenet - La com', elle ne passera pas par moi -+- -- http://mail.python.org/mailman/listinfo/python-list
Re: converting lists to strings to lists
robin wrote: hi, i'm doing some udp stuff and receive strings of the form '0.87 0.25 0.79;\n' what i'd need though is a list of the form [0.87 0.25 0.79] i got to the [0:-3] part to obtain a string '0.87 0.25 0.79' but i can't find a way to convert this into a list. i tried eval() but this gives me the following error: check pydoc string about split my_string = '0.87 0.25 0.79;\n' my_list = my_string.split() print my_list and i have the same problem the other way round. e.g. i have a list which i need to convert to a string in order to send it via udp. my_new_string = ' '.join(my_list) print my_new_string Eric -- http://mail.python.org/mailman/listinfo/python-list
Re: converting lists to strings to lists
robin wrote: yo! thank you everone! here's how i finally did it: converting the string into a list: input = net.receiveUDPData() input = list(eval(input[0:-2])) no pun intented but as you did not know how to use split and join, please please DON'T USE eval Eric -- http://mail.python.org/mailman/listinfo/python-list
Re: how to comment lot of lines in python
[EMAIL PROTECTED] wrote: Like in C we comment like /* Bunch of lines of code */ Should we use docstring I would say NO. docstring are displayed by pydoc, thus a pydoc on your code will display some inconsistent information ;-) Or there is something else too ?? some moderns editors allow you to comment/uncomment a selected Bunch of lines of code Eric -- afin de parfaire mon apprentissage de linux,je cherche sur lille et sa périphérie une nana tout linux JPH in Guide du linuxien pervers : Connaître le système -- http://mail.python.org/mailman/listinfo/python-list
Re: how to comment lot of lines in python
[EMAIL PROTECTED] wrote: Eric Deveaud wrote: [EMAIL PROTECTED] wrote: Like in C we comment like /* Bunch of lines of code */ Should we use docstring I would say NO. docstring are displayed by pydoc, thus a pydoc on your code will display some inconsistent information ;-) docstrings are a bit of a magical construct. Not all strings in a function are docstrings. yep fogotten that triple quotted strings are considered as docstring only if they are the first lines of the module/fonction/class/method excluding the comments lines. my bad Eric -- SYBEX ORIGINAL SOFTWARE NOUVEAU KIT LINUX REDHAT 5.2 POUR WIN 95/98 -+- Sybex in Guide du linuxien pervers - L'incompétance en action -+- -- http://mail.python.org/mailman/listinfo/python-list
Re: [OT] .DS_Store files (was Re: Removing .DS_Store files from mac folders)
Dan Sommers wrote: If these are both true, then *new* .DS_Store files could be created after I've made the list and before I've made the tarball. not python related, but in order to creater the tarball without the .DS_Store files why don't you use the --exclude=PATTERN option from tar ?? Eric -- CM: Faut-il nommer un modérateur suppléant à Christophe Wolfhugel ? MG: Faudrait savoir ce qu'il en pense ? Va-t-il répondre : « Rien » ? CW: Non. -+- in: Guide du Cabaliste Usenet - Euh... Non, rien. -+- -- http://mail.python.org/mailman/listinfo/python-list
Re: how do you move to a new line in your text editor?
John Salerno wrote: This is a real small point, but I'd like to hear what others do in this case. It's more an 'administrative' type question than Python code question, but it still involves a bit of syntax. One thing I like to do is use tabs for my indentation, because this makes it easy to outdent when I need to start a new line in column 1. I can press backspace once and move 4 spaces to the left. But I read in the PEP that spaces are recommended over tabs. If this is the case, it would involve pressing backspace 4 times (or 8, etc.) to get back to column 1. you can still use tabs for editing, and if you want to provide space indented code you can write a small tab2space converter in python more seriously, most of the editors (at least Emacs and vim) may use tab for automatic indentation but convert the tabs to a specified space number Eric -- Le lecteur c'est Outlook express (ceci explique sans doute celà) Outlook Express, c'est fait pour demander comment configurer Emacs pour lire le courrier et les news. -+- GK in Guide du linuxien pervers - De l'utilité de Outlook -+- -- http://mail.python.org/mailman/listinfo/python-list
