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  • What is wrong with this SimPy installation?

    - by dmindreader
    Alright, I have tried a bunch of times the python setup.py install command from my command prompt, and this is what I'm getting: SCREEN And when trying this: from SimPy.Simulation import * on Idle, I get this: Traceback (most recent call last): File "C:/Python30/pruebas/prueba1", line 1, in <module> from SimPy.Simulation import * File "C:\Python30\SimPy\Simulation.py", line 320 print 'SimPy.Simulation %s' %__version__, ^ SyntaxError: invalid syntax >>>

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  • Numpy array dimensions

    - by cristian
    Hello, I'm currently trying to learn Numpy and Python. Given the following array: import numpy as N a = N.array([[1,2],[1,2]]) Is there a function that returns the dimensions of a (e.g.a is a 2 by 2 array). size() returns 4 and that doesn't help very much. Thanks.

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  • What is your favorite NumPy feature?

    - by Gökhan Sever
    Share your favourite NumPy features / tips & tricks. Please try to limit one feature per line. The question is posted in parallel at ask.scipy.org We welcome you to join the conversation there -with the main idea of collecting the Scientific Python related questions under one roof. Feel free to dual-post or post at your favourite site...

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  • Trouble using South with Django and Heroku

    - by Dan
    I had an existing Django project that I've just added South to. I ran syncdb locally. I ran manage.py schemamigration app_name locally I ran manage.py migrate app_name --fake locally I commit and pushed to heroku master I ran syncdb on heroku I ran manage.py schemamigration app_name on heroku I ran manage.py migrate app_name on heroku I then receive this: $ heroku run python notecard/manage.py migrate notecards Running python notecard/manage.py migrate notecards attached to terminal... up, run.1 Running migrations for notecards: - Migrating forwards to 0005_initial. > notecards:0003_initial Traceback (most recent call last): File "notecard/manage.py", line 14, in <module> execute_manager(settings) File "/app/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "/app/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/app/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv self.execute(*args, **options.__dict__) File "/app/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute output = self.handle(*args, **options) File "/app/lib/python2.7/site-packages/south/management/commands/migrate.py", line 105, in handle ignore_ghosts = ignore_ghosts, File "/app/lib/python2.7/site-packages/south/migration/__init__.py", line 191, in migrate_app success = migrator.migrate_many(target, workplan, database) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 221, in migrate_many result = migrator.__class__.migrate_many(migrator, target, migrations, database) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 292, in migrate_many result = self.migrate(migration, database) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 125, in migrate result = self.run(migration) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 99, in run return self.run_migration(migration) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 81, in run_migration migration_function() File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 57, in <lambda> return (lambda: direction(orm)) File "/app/notecard/notecards/migrations/0003_initial.py", line 15, in forwards ('user', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['auth.User'])), File "/app/lib/python2.7/site-packages/south/db/generic.py", line 226, in create_table ', '.join([col for col in columns if col]), File "/app/lib/python2.7/site-packages/south/db/generic.py", line 150, in execute cursor.execute(sql, params) File "/app/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute return self.cursor.execute(sql, params) File "/app/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute return self.cursor.execute(query, args) django.db.utils.DatabaseError: relation "notecards_semester" already exists I have 3 models. Section, Semester, and Notecards. I've added one field to the Notecards model and I cannot get it added on Heroku. Thank you.

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  • Which XML library for what purposes?

    - by John Mee
    A search for "python" and "xml" returns a variety of libraries for combining the two. This list probably faulty: xml.dom xml.etree xml.sax xml.parsers.expat PyXML beautifulsoup? HTMLParser htmllib sgmllib Be nice if someone can offer a quick summary of when to use which, and why.

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  • how to create http headers from scratch

    - by Sean Ochoa
    So, I made a simple socket server using python. And now I'm trying to structure a proper http response. However, I can't seem to find any sort of tutorial or spec that discusses how to format http responses. Could someone point me to the right place?

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  • Counting vowels

    - by user74283
    Can anyone please tell me what is wrong with this script. I am a python newb but i cant seem to figure out what might be causing it not to function. def find_vowels(sentence): """ >>> find_vowels(test) e """ count = 0 vowels = "aeiuoAEIOU" for letter in sentence: if letter in vowels: count += 1 print count if __name__ == '__main__': import doctest doctest.testmod()

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  • IP address of domain on shared host

    - by Ali
    I have domain on a shared hosting provider. How do I find the direct IP address of my domain using Python? Is it possible to post to a script on my domain using the IP address and not the website itself? Thanks.

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  • single user dungeon

    - by mario estes
    hey dudes, my first question anyway, i have made a single user dungeon and am looking to change it in to a multi user dungoen how can i do this by the way im using python to make the sud in to a mud lol

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  • new to mac and textmate, can someone explain these shortcuts?

    - by Blankman
    I'm using textmate for the first time basically, and I am lost as to what keys map to these funny symbols. using python bundles, what keys do I press for: run run with tests run project unit tests Also, with textmate, do I actually define a project in textmate or do I just work on the files and textmate doesn't create its own .project type file ?

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  • Accelerometer data analysis

    - by jrrt
    Hello, I would like to know if there are some libraries/algorithms/techniques (python, if at all possible) that help to extract features from accelerometer data (extracted from and android phone, btw), like periodicity of movements, energy of acceleration and the like. Has anyone done this kind of task before? Thank you very much in advance :)

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  • Escape SQL "LIKE" value for Postgres with psycopg2

    - by Evgeny
    Does psycopg2 have a function for escaping the value of a LIKE operand for Postgres? For example I may want to match strings that start with the string "20% of all", so I want to write something like this: sql = '... WHERE ... LIKE %(myvalue)s' cursor.fetchall(sql, { 'myvalue': escape_sql_like('20% of all') + '%' } Is there an existing escape_sql_like function that I could plug in here? (Similar question to How to quote a string value explicitly (Python DB API/Psycopg2), but I couldn't find an answer there.)

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  • Decorator Module Standard

    - by Kyle Terry
    I was wondering if it's frowned upon to use the decorator module that comes with python. Should I be creating decorators using the original means or is it considered okay practice to use the module?

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  • When will Unladen Swallow be "done" or "ready" for real use?

    - by orokusaki
    It looks like Google hasn't updated the results section since the Q4 2009 posting. I've been wondering when it will be put in the Python trunk, and if it's, in any way, production ready. Also, "We aspire to do no original work" is in the Q4 plan. Did Google bite off more than what they could handle, or does anyone know what the real story is?

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  • Need to try and count repeated lists within a list

    - by user1828603
    Im trying to count how many repeated lists there are inside a list. But it doesnt work the same way I could count repeated elements in just a list. Im fairly new to python, so apologies if it sounds too easy. this is what i did x= [["coffee", "cola", "juice" "tea" ],["coffee", "cola", "juice" "tea"] ["cola", "coffee", "juice" "tea" ]] dictt= {} for item in x: dictt[item]= dictt.get(item, 0) +1 return(dictt)

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  • Read -> change -> save. Thread safe.

    - by Pavel Alexeev
    This code should automatically connect players when they enter a game. But the problem is when two users try to connect at the same time - in this case 2nd user can easily overwrite changes made by 1st user ('room_1' variable). How could I make it thread safe? def join(userId): users = memcache.get('room_1') users.append(userId) memcache.set('room_1', users) return users I'm using Google App Engine (python) and going to implement simple game-server for exchanging peers given by Adobe Stratus.

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  • receive string with chars

    - by Meloun
    Hi all, i am quite new in python. I am receiving (through pyserial) string with data values. How can I parse these data to particular data structure? I know that 0-1 byte : id 2-5 byte : time1 =>but little endian (lsb first) 6-9 byte : time2 =>but little endian (lsb first) and I looking for a function: def parse_data(string): data={} data['id'] = ?? data['time1'] = ?? data['time2'] = ?? return data thanks

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  • Java converting to Jython-Getting a class object within itself

    - by Bggreen
    I am attempting to convert Java code to Jython and am using the apache Log and LogFactory imports. I am attempting to emulate Foo.class in Jython The chunk of code is as follows: in Java import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class MyClass { private static final Log log = LogFactory.getLog(MyClass.class); public MyClass(Document dom) { //code } How can I emulate this same behavior of MyClass.class in Jython/Python?

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