How can one display and scroll through a multi-line strings (contain "\n") via pyglet using the features of ScrollableTextLayout? STL crops what is display, and seems to be the most efficient way to implement scrolling. However I have no idea as to how to use it. The docs do not elucidate much to me. SomeText: string = "Some multilin...
I'm trying to work with some long file paths (Windows) in Python and have come across some problems. After reading the question here, it looks as though I need to append '\\?\' to the front of my long file paths in order to use them with os.stat(filepath). The problem I'm having is that I can't create a string in Python that ends in a ...
Are there short Unicode u"\N{...}" names for Latin1 characters in Python ? \N{A umlaut} etc. would be nice, \N{LATIN SMALL LETTER A WITH DIAERESIS} etc. is just too long to type every time. (Added:) I use an English keyboard, but occasionally need German letters, as in "Löwenbräu Weißbier". Yes one can cut-paste them singly, L cutpaste ö...
I'm trying to extend Python interpreter by a few C functions I wrote. From reading docs, to expose those function the user has to import the module encompassing the functions. Is it possible to load pre-load or pre-import via C API the module so that the user doesn't have to type import <mymodule>? Or even better, from <mymodule> import...
Hello, I am writing a simple Python program. My program seems to suffer from linear access to dictionaries, its run-time grows exponentially even though the algorithm is quadratic. I use a dictionary to memoize values. That seems to be a bottleneck. The values I'm hashing are tuples of points. Each point is: (x,y), 0 <= x,y <= 50 ...
I have a peculiar problem. I need to read (from a txt file) using python only those substrings that are present at predefined range of offsets. Let's say 5-8 and 12-16. For example, if a line in the file is something like: abcdefghi akdhflskdhfhglskdjfhghsldk then I would like to read the two words - "efgh" and "kdhfl". Because, in t...
I try to make my code fool-proof, but I've noticed that it takes a lot of time to type things out and it takes more time to read the code. Instead of: class TextServer(object): def __init__(self, text_values): self.text_values = text_values # <more code> # <more methods> I tend to write this: class TextServer...
Hi, I am trying to create a multipage form, where the number of field elements on the second page is defined by the answers given on the first. I have a formWizard set up and my understanding is that I need to use process_step() to alter the setup for the next page. I can either extend an existing form definition to add more elements,...
I'm building a PHP web application and I've reached a point that I need to build a Comet server because I need to update my users' whenever a new data is available (pretty much like FB). I've spent so much time searching the web and I've come to a conclusion that the best way to build Comet server is to build it with erlang. Also I've fo...
In PHP I can send an email simply by calling mail(). In Django, I need to specify SMTP backends and other things. Is there a simpler way to send email from Django? ...
I'm trying to create an SQLite 3 database from Python. I have a few types I'd like to insert into each record: A float, and then 3 groups of n floats, currently a tuple but could be an array or list.. I'm not well-enough versed in Python to understand all the differences. My problem is the INSERT statement. DAS = 12345 lats = (42,43,44,...
Suppose in python you have a routine that accepts three named parameters (as **args), but any two out of these three must be filled in. If only one is filled in, it's an error. If all three are, it's an error. What kind of error would you raise ? RuntimeError, a specifically created exception, or other ? ...
Is there a crash reporting framework that can be used for pure Python Tkinter applications? Ideally, it should work cross-platform. Practically speaking, this is more of 'exception reporting' since the Python interpreter itself hardly crashes. Here's a sample crash reporter: ...
Hello, I am thinking of giving one or more set of introductory lectures to introduce people in my department with Python and related scientific tools as I did once in the last summer py4science @ UND. To make the meetings more interesting and catch more attention I had given two Python learning materials to one of the lucky audience v...
Hello, I'm looking for a solution similar to presented in this question, except it has to deal with python. ...
I tried to run the following command, in the folder of my Django project: $ python manage.py dbshell It shows me this error: $python manage.py dbshell Traceback (most recent call last): File "manage.py", line 11, in <module> execute_manager(settings) File "C:\Python25\lib\site-packages\django\core\management\__init__.py", lin...
This is a question on making custom fields in Django. I'm making a field called EditAreaField, which inherits from TextField. Here's what my code looks like: class EditAreaField(models.TextField): description = "A field for editing the HTML of a page" def formfield(self, **kwargs): defaults = {} defaults['widget'] = Ed...
Hello. Is it possible to do in place edit of XML document using xpath ? I'd prefer any python solution but Java would be fine too. ...
def validate(request, *args, **kwargs): form_class = kwargs.pop('form_class') extra_args_func = kwargs.pop('callback', lambda request, *args, **kwargs: {}) thanks a={'a':'aaa','b':'bbb'} b=a.pop('a',lambda x,y:x) print a i know dict.pop('a'),but i don't know dict.pop('a',func) what is the use of 'func‘ in here ...
the next is my code: class a(object): d='ddd' def __contains__(self): if self.d:return true b=a() print b.contains('d')#error print contains(b,'d')#error thanks ...