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Python Class Inheritance, __init__ and cls
Question: The desired output of the code is that I have a class variable Team.stuff
which has one entry holding the b instance, and the Player.stuff variable
should be empty. Instead I get an error...
class Player:
stuff=[]
def __init__(self):
... |
Extracting values only from the value of excel row recived using xlrd -python
Question: This problem is specific wrt using xlrd package in python I got row of excel
which is in form of list but each item is integer value; type:value this is
not string. The row is save by;
import xlrd
book = xlrd... |
Make Python's Interactive Interpreter Class Print Evaluated Expressions
Question: When you use the Python Interactive Interpreter, you can enter an expression,
say `1+1` and it'll print the value. If you write `1+1` in a script, it will
not print anything, which makes perfect sense.
However, when you create a subclass... |
sqlite and python filter results
Question: I have a python function to do query from sqlite. as the following:
def Query(X, Y, Z):
where X, Y & Z are the columns of the database. so for example when
Query(1, 2, 3)
it will go to the sqlite as follows:
<code>SELECT... |
python unittest.TestCase.assertEquals() on complex data structures
Question: I'm unit testing a function that returns a _very_ complex data structure (dict
of lists of lists of sets etc.). I validated the output manually, and now I
want to make sure it doesn't change without me noticing.
Right now I have:
... |
log a variable name and value
Question: I am looking for a way to quickly print a variable name and value while
rapidly developing/debugging a small python script on a unix command line/ssh
session.
It seems like a very common requirement and it seems wasteful (on keystrokes
and time/energy) to duplicate the variable_... |
How do you convert a python time.struct_time object into a ISO string?
Question: I have a Python object:
time.struct_time(tm_year=2013, tm_mon=10, tm_mday=11, tm_hour=11, tm_min=57, tm_sec=12, tm_wday=4, tm_yday=284, tm_isdst=0)
And I need to get an [ISO string](http://www.w3.org/TR/NOTE-datetime):... |
f2py with Intel Fortran compiler
Question: I am trying to use f2py to interface my python programs with my Fortran
modules.
I am on a Win7 platform.
I use latest Anaconda 64 (1.7) as a Python+NumPy stack.
My Fortran compiler is the latest Intel Fortran compiler 64 (version
14.0.0.103 Build 20130728).
I have been ex... |
Flask-Migrate not creating tables
Question: I have the following models in file `listpull/models.py`:
from datetime import datetime
from listpull import db
class Job(db.Model):
id = db.Column(db.Integer, primary_key=True)
list_type_id = db.Column(db.Integer, db.Fore... |
Printing a Yearly Calendar
Question: I am trying to print a yearly calendar with python and I have hit a wall. I am
getting the days of the month printed, but I am not sure how to make the
output jump to a new line after 7 days.
I am using a for loop to print the days of the month.
I need the numbers to go to a new l... |
matplotlib savefig bbox_inches = 'tight' does not ignore invisible axes
Question: When you set bbox_inches = 'tight' in Matplotlib's savefig() function, it
tries to find the tightest bounding box that encapsulates all the content in
your figure window. Unfortunately, the tightest bounding box appears to
include invisib... |
html post values addition in bottle application
Question: I was trying to add two html form values transferred via post in a python
bottle application. Unfortunately it is just concatenating. I tried to convert
the inputs to int but then i get" Unhandled Exception Error".... This is my
code
from bottle i... |
How do I change my Content-Transfer-Encoding header in Python?
Question: This is my code right now:
from email.MIMEText import MIMEText
body = "helloworld"
msg = MIMEText(body, 'plain')
msg['Subject']= subject
msg['From'] = from_field['name'] + ' <'+from_field['email']+'>'
msg['Dat... |
Python disable while iterating
Question: So I am creating a data structure that is based on storage and memory. Lets
say I have the following method:
def __store(self):
#stores information into self.__memory list
now what I want to do is, if this function is called inside a loop, I want it
... |
importing python modules - ImageChops
Question: I'm looking for a good way to analyze image similarity, using python. I'm NOT
looking for a way to establish whether two images are identical. I'm just
looking for a way to establish the similarity between two images (e.g., if two
images are very similar they could be giv... |
Python Printing the String Result
Question:
import operator
def mkEntry(file1):
results = []
for line in file1:
lst = line.rstrip().split(",")
lst[2] = int(lst[2])
results.append(lst)
return print(sorted(results, key=operator.itemgetter(1,2)))
... |
Sequential pattern matching algorithm in Python
Question: I find myself in this situation that I need to implement an algorithm for
sequential pattern matching in Python. Can't find any working library/snippet
on the internet after searching for hours.
problem definition:
implement a function sequential_pattern_match... |
Displaying an amount of objects on to the screen and positioning
Question: I am following this tutorial: <http://www.raywenderlich.com/24252/beginning-
game-programming-for-teens-with-python#comments> And I am trying to reduce the
amount of badgers drawn to the screen from the part where the badgers are
drawn. It looks... |
Project Euler getting smallest multiple in python
Question: I am doing problem five in Project Euler: "2520 is the smallest number that
can be divided by each of the numbers from 1 to 10 without any remainder.
What is the smallest positive number that is evenly divisible by all of the
numbers from 1 to 20?"
I have co... |
Multi-threaded websocket server on Python
Question: Please help me to improve this code:
import base64
import hashlib
import threading
import socket
class WebSocketServer:
def __init__(self, host, port, limit, **kwargs):
"""
Initialize websoc... |
Splines in pythonOCC
Question: This question is about how to use splines in general in pythonOCC, There are
two part to this question.
Have found out that I can create a spline by
array = []
array.append(gp_Pnt2d (0,0))
array.append(gp_Pnt2d (1,2))
array.append(gp_Pnt2d (2,3))
array.appe... |
Blender ImportError: cannot import name
Question: I am really almost giving up on trying to create an import-export module addon
to Blender 2.68 and it seems that it is an insurmountable python problem
(Blender uses python 3.3). I see plenty of questions in stackoverflow on this
topic but none of them answers my proble... |
Embed Plotly graph into a webpage with Bottle
Question: Hi i am using plotly to generate graphs using Python, Bottle. However, this
returns me a url. Like:
https://plot.ly/~abhishek.mitra.963/1
I want to paste the entire graph into my webpage instead of providing a link.
Is this possible?
My code ... |
OpenGL Pyglet "Error: global name 'texture' not defined"
Question: The error is on line 5: glBindTexture(texture.target, texture.id)
1. import pyglet
2. from pyglet.gl import *
3. class CustomGroup(pyglet.graphics.Group):
4. def set_state(self):
5. glEnable(texture.target)
6... |
django-cms refusing to publish a specific page in production - where should I start debugging?
Question: I have a small problem in my production cms. One of the pages (There are about
50) is refusing to be published. I mean: if I click on "publish" in the admin
interface or use the method publish_page I am not getting ... |
Reverse for '' with arguments '(1L,)' and keyword arguments '{}' not found
Question: I'm new to Django and faced with next problem: when I turn on the appropriate
link I get next error:
`NoReverseMatch at /tutorial/`
`Reverse for 'tutorial.views.section_tutorial' with arguments '(1L,)' and
keyword arguments '{}' not ... |
Django "__init__() keywords must be strings" error while running "runserver"
Question: I just set up virtualenv to start django project. I installed everything fine.
when I issue "python manage.py runserver" it spits out this error. I tried all
kind of django runserver error through out and no one seems to have this.
A... |
Pythonic way of writing a library function which accepts multiple types?
Question: If, as a simplified example, I am writing a library to help people model
populations I might have a class such as:
class Population:
def __init__(self, t0, initial, growth):
self.t0 = t0,
se... |
Homework: need to check the time performance of the loop, computer heats
Question: I typed this code in python and my computer really heats and doesn't print
anything! however when I assigned `num = 2**10` it did. How can I calculate
approx. how long will it take for an average computer to run this code? the
code is:
... |
Cython: overloaded constructor initialization using raw pointer
Question: I'm trying to wrap two C++ classes: Cluster and ClusterTree. ClusterTree has a
method get_current_cluster() that instantiates a Cluster object, and returns a
reference to it. ClusterTree owns the Cluster object, and manages its creation
and delet... |
python: Open file from zip without temporary extracting it
Question: How can I open files from a zip archive without extracting them first?
I'm using pygame. To save disk space, I have all the images zipped up. Is it
possible to load a given image directly from the zip file? For example:
`pygame.image.load('zipFile/im... |
How to replace characters that have already been printed in a previous line
Question: I am trying to make a game similar to [this](http://candies.aniwey.net/) in
Python (3.3.2 on Windows). I think that most of the programming is fairly
basic and so it will be easy for me as beginner. What I can't understand is
how to h... |
Redirect text from editor directly to python script
Question: is there a way to open text editor like vim or gedit from python script and
then redirect typed text from text editor back directly to python script so I
could save it in database? Something like git commit command which opens
external text editor and on exi... |
How to read a config file using python
Question: I have a config file `abc.txt` which looks somewhat like:
path1 = "D:\test1\first"
path2 = "D:\test2\second"
path3 = "D:\test2\third"
I want to read these paths from the `abc.txt` to use it in my program to avoid
hard coding.
Answer: In ord... |
Python: get OS language
Question: What is a way to get current Windows (or OSX) Locale id on Python 2.x. I want
to get an int (or str) which tells what language in OS is active.
Is possible without using WinAPI?
Answer: This is the documentation related to the
**[locale](http://www.python.org/doc//current/library/lo... |
SyntaxError: Invalid Syntax PLEASE help me
Question: Hey guys I am trying to learn Python Through an online book here:
<http://learnpythonthehardway.org/book/ex1.html>
However, I am trying to run a program to make it say stuff (I am trying to use
Windows Power Shell like it suggested) and I keep getting an error
Prog... |
cannot resolve AttributeError: 'module' object has no attribute 'calcKappa'
Question: I'm completely new to python. Now i'm using Enthought canopy (python 2.7.3). I
know this question has been asked a million times before and i can imagine you
all are tired of this question but it has been bugging me all day.
... |
How do Python's any and all functions work?
Question: I'm trying to understand how the `any()` and `all()` Python built-in functions
work.
I'm trying to compare the tuples so that if any value is different then it
will return `True` and if they are all the same it will return `False`. How
are they working in this case... |
Detecting collision when rotating
Question: I have a chain of squares represented in pygame. I have some code that lets me
rotate parts of the chain, as follows.
#!/usr/bin/python
import pygame
def draw(square):
(x,y) = square
pygame.draw.rect(screen, black, (100+x*20,100+y*2... |
how to parse time stamps in Python from PyPI packages (eg. 12-Oct-2010 06:40)
Question: I'm wondering if there is a straightforward way to do this, since PyPI is the
Python packaging authority, it seems like parsing these time stamps (into the
epoch time perhaps) should then be handled in Python somewhat easily, but it... |
File is not creating in python when unicode present in the file name
Question: I need to store HTML file as text files. In the same name of web tittle.
something went wrong with my code so that it is not creating file in side the
directory. I have directory permission to write. I am using Ubuntu 12.04LTS
Directory `/h... |
Easy_install and pip broke: pkg_resources.DistributionNotFound: distribute==0.6.36
Question: I was tried to upgrade pip with `pip install --upgrade pip` on OSX and pip and
easy_install both dont work.
When running pip
Traceback (most recent call last):
File "/usr/local/bin/pip", line 5, in <module... |
get all link site in source html (python)
Question: I want get all link in one web page ,this function only one link but need get
all link ! of course i know need The One Ring true but i don't know use
i need get all link
def get_next_target(page):
start_link = page.find('<a href=')
start_quote ... |
Chinese Restaurant Process implementation in Python
Question: I have wrote a code in Python for CRP problem. The problem itself can be found
here: <http://cog.brown.edu/~mj/classes/cg168/slides/ChineseRestaurants.pdf>
And to give a short description of it: Suppose we want to assign people
entering to a restaurants to ... |
Sample of Server to Server authentication using OAuth 2.0 with Google API's
Question: This is a follow-up question for [this
question](http://stackoverflow.com/questions/19391252/how-to-obtain-a-private-
key-for-a-legacy-google-app-engine-project):
I have successfully created a private key and have read the various pa... |
Send by ref/by ptr in python?
Question: i need help-i try to send value to method like in c++ by ref/by ptr how can i
do it?
to exmple:
def test(x):
x=3
x=2
test(x)
print(x)
In this case x a local variable in test method and will not change the
"original" X so how ... |
function calls in python (pygame)
Question: im trying to split my code into functions and i want to input my own values
for x and y. so the character can move from the inputed values. When i try to
do this from the function call, nothing happens.
Any suggestions?
import pygame, sys
from pygame.local... |
Python 3.3 pyqtgraph can't plot points
Question: Is it me, or is it impossible to plot points (scatterplot) in pyqtgraph using
Python 3.3?
I have quite big data*, and find matplotlib way too slow, so I would like to
give this a try:
1) `pyqtgraph.plot([1],[1])` shows nothing in the plot.
2) `pyqtgraph.plot([1,2,3,4]... |
Generating Pivot Tables in Python - Pandas? Numpy? Xlrd? from csv
Question: I have been searching for hours, literally the entire day on how to generate a
pivot table in Python. I am very new to python so please bear with me.
What I want is to take a csv file, extract the first column and generate a
pivot table using ... |
How to install external packages into Canopy?
Question: I am new to python and Canopy. I have searched for the possible solutions
online, including the support forum of Enthought Canopy, but failed to solve
my problem by following the instructions under other similar questions.
I use Mac OS, and wanted to install exte... |
Print output to file on python
Question: I have two python files. My test.py import td.py file witch i found internet.
Td.py file looking signals from TelldusCenter program.
Now if i run test.py file it shows me signals what i get from TelldusCenter
app and output is something like: "Door - ON" Now i like to print tha... |
Python: fast iteration through file
Question: I need to iterate through two files many million times, counting the number of
appearances of word pairs throughout the files. (in order to build contingency
table of two words to calculate Fisher's Exact Test score)
I'm currently using
from itertools import... |
AttributeError: '_BoundedSemaphore' object has no attribute 'acuire'
Question: I am learning python, and learning through a book called Violent Python, I am
on a section which involves making a brute force SSH script. I am having
problems with an error, and cannot figure out the problem or the fix.
the code:
... |
Is there a python http-client which automatically performs authentication for several auth types?
Question: I am currently using urllib2 or curl to perform authentication to different
Trac, Jira, Twiki and Media Wiki sites to request information like the users
that are active.
Now depending on the settings on the spec... |
BeautifulSoup - why is it printing file path and not the content
Question: I am trying to understand how BeautifulSoup works. Note that I am really new
to Python so I am probably missing something out.
I open a Python terminal and write this:
from bs4 import BeautifulSoup
import re
ytchannel = '... |
Python data structure for sorted key-value pairs
Question: I have a (fixed) set of keys for which I store a value. I often look up the
value for a key and increment or decrement it. A typical dict usage.
x = {'a': 1, 'b': 4, 'c': 3}
x['a'] += 1
Additionally however, just as often as incrementin... |
Running tests for third-party Django app results in "ImportError: No module named urls"
Question: I've installed a not-yet-open sourced third-party Django app using pip and now
I'm implementing unit tests for it. However, whenever I try running the unit
tests, it results in the following traceback for each test case:
... |
Submitting jobs using python
Question: I am trying to submit a job in a cluster in our institute using python
scripts.
compile_cmd = 'ifort -openmp ran_numbers.f90 ' + fname \
+ ' ompscmf.f90 -o scmf.o'
subprocess.Popen(compile_cmd, shell=True)
Popen('qsub launcher',... |
Using SELECT LAST() with pyodbc and MSACCESS sometimes returns same value
Question: I have a strange problem that Im having trouble both duplicating and solving.
Im using the pyodbc library in Python to access a MS Access 2007 database. The
script is basically just importing a csv file into Access plus a few other
tri... |
capture Python script output
Question: I have written very small script and try to capture output of the script. I
have written multiple time similar way but never had issue. Could I have
input. I think I am doing very silly mistake
numpy_temp = """
import numpy
import sys
a, b, c = numpy.pol... |
Trimmed Mean with Percentage Limit in Python?
Question: I am trying to calculate the **trimmed mean** , which excludes the outliers,
of an array.
I found there is a module called
[`scipy.stats.tmean`](http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.tmean.html#scipy.stats.tmean),
but it requires the use... |
how to change the secs to the ISO time format?
Question: How to change the secs to the ISO time format:
for example:
28800 sec is the offset from the midnight? if successfully converted, the
output should be 08:00:00 not 8:00:00.
How could I do it in python? Thank you.
Answer: Solution using timedelta to 'do the m... |
ZeroMQ: have to sleep before send
Question: I'm write a zeromq demo with Forwarder device (with pyzmq)
Here are the codes(reference to <https://learning-0mq-with-
pyzmq.readthedocs.org/en/latest/pyzmq/devices/forwarder.html> ):
forwarder.py
import zmq
context = zmq.Context()
frontend = con... |
Efficient Cython for large matrix creation/manipulation
Question: I have been trying to speed up a section of code that creates and manipulates
a very large matrix of data (approx. 15,000 x 15,000; type double). For now, I
don't think the size of the matrix is that important because I do not see
speedup even for a smal... |
Django - No module name site.urls
Question: As [this other SO post
shows](http://stackoverflow.com/questions/11216829/django-directory-
structure), my Django 1.4 directory structure globally looks like:
wsgi/
champis/
settings.py
settings_deployment.py
urls.py
... |
Plot figure problems with python and matplotlib
Question: I'm making an app that plots a figure after some processing. This is done
after the user has introduced some values and pushes a button. However I don't
get the figure plotted. Below there is a simplified code. This works fine if I
plot directly the values of t ... |
Python regex and using s/ in pattern
Question: I have this regex pattern that when I use in vim works great:
s/\.[A-Za-z0-9_]*\(IPROC\|IFIX\|IPTAT\)[A-Za-z_]*\([0-9][0-9]*\)[^0-9]*.*([A-Za-z0-9_]*\(IPROC\|IFIX\|IPTAT\)[A-Za-z_]*\([0-9][0-9]*\)[^0-9]*.*)/\3_\4
I am searching for things like
`.jalsd... |
How do I combine two files without overwriting any data in python?
Question: I need to concatenate two files, one which contains a single number and the
other which contains at least two rows of data. I have tried
shutil.copyfile(file2,file1) and subprocess.call("cat " + file2 + " >> " +
file1, shell=True), both things... |
How to parse Ethernet Header of pcap file using Python?
Question: I would like to decode the link-layer type and version of packets in a pcap
file using Python. So, I have to parse pcap using Python. Here is my code.
import dpkt
import socket
import sys
f = open('filename')
pcap = dp... |
Sending Strings Queue to Clipboard in python
Question: I am writing a program that runs in background and check's for file changes in
a folder if any new Image file arrives into that folder it will read text from
that Image with the help of tesseract OCR Engine.Images contains Adresses of
Employees.python program split... |
Run server alongside infinite loop in Python
Question: I have the following code:
#!/usr/bin/python
import StringIO
import subprocess
import os
import time
from datetime import datetime
from PIL import Image
# Original code written by brainflakes and modified to exit
... |
Representing graphs (data structure) in Python
Question: How can one neatly represent a
[graph](https://en.wikipedia.org/wiki/Graph_%28data_structure%29) in
[Python](https://en.wikipedia.org/wiki/Python_\(programming_language\))?
(Starting from scratch i.e. no libraries!)
What data structure (e.g. dicts/tuples/dict(t... |
WxPython widget missplaced after hide() & show()
Question: I'm trying to build a GUI for a school project for Boolean expressions
evaluation. This program takes a string as an input `A^B` and shows it's truth
table in the GUI with a Grid widget.
For some reasons (don't want to make this post too long) I need to Hide()... |
Enthought Canopy - passing sys.argv from PySide Qt program
Question: I've recently been looking at the Enthought distro of iPython. Today I decided
to see if I could get some Qt GUI progs running and was successful after
making minor changes. Simple example:
import sys
from PySide import QtGui # w... |
How to avoid floating point errors?
Question: I was trying to write a function to approximate square roots (I know there's
the math module...I want to do it myself), and I was getting screwed over by
the floating point arithmetic. How can you avoid that?
def sqrt(num):
root = 0.0
while ro... |
python pattern identifier? regex?
Question: So what I need is to identify the pattern " X" or "spaceCAPITAL" examples:
string="Hello World, This is KZ"
And the program would pick out:
example_list = [W,T,K]
Answer:
>>> import re
>>> strs = "Hello World, This is KZ"
... |
Compiling and Executing Java file in python
Question: how can I open an java file in python?, i've search over the net and found
this:
import os.path, subprocess
from subprocess import STDOUT, PIPE
def compile_java (java_file):
subprocess.check_call(['javac', java_file])
def... |
questions regarding Python namespaces and using import
Question: I'm playing around with Python today and trying out creating my own modules.
It seems I don't fully understand Python namespaces and I wonder if anyone
could answer my questions about them.
Here is an example of what I've done:
I've created a module nam... |
Load multiple dictionaries from a file
Question: I have a file that looks like this:
{"cid" : "160686859281645","name" : "","s" : "JBLU131116P00011000","e" : "OPRA","p" : "-","c" : "-","b" : "3.60","a" : "3.80","oi" : "0","vol" : "-","strike" : "11.00","expiry" : "Nov 16, 2013"};
{"cid" : "72101... |
How to extract string between selected string in python
Question: if i have a string like:
str = 'Hello, <code>This is the string i want to extract</code>'
Then how will i extract string that are between `<code>` and `</code>`, In
above case the extract string is:
'This is the string... |
Plot lines in different colors from color dictionary in Python
Question: I'm trying to plot the path of 15 different storms on a map in 15 different
colors. The color of the path should depend on the name of the storm. For
example if the storm's name is AUDREY, the color of the storm's path should be
red on the map. Co... |
How to determine vCenter Server from a HostSystem object?
Question: I am querying ESX hosts, some of which are managed by a vCenter server, and
some are not. I want to find out the name of the vCenter server that manages
this host, if it there is one.
I'm using the Python psphere module, but all I want is the types of... |
Incorrect value from dynamodb table description and scan count
Question: I'm having a problem with dynamodb. I'm attempting to verify the data
contained within, but scan seems to be only returning a subset of the data,
here is the code I'm using with the python boto bindings
#!/usr/bin/python
#Check ... |
isinstance(foo, types.GeneratorType) or inspect.isgenerator(foo)?
Question: It seems that there are two ways in Python to test whether an object is a
generator:
import types
isinstance(foo, types.GeneratorType)
or:
import inspect
inspect.isgenerator(foo)
In the spirit o... |
Compress Python Object in Memory
Question: Most tutorials on compressing a file in Python involve immediately writing
that file to disk with no intervening compressed python object. I want to know
how to pickle and then compress a python object in memory without ever writing
to or reading from disk.
Answer: I use thi... |
how to istall opencv in EPD?
Question: There is no opencv in EPD 7.3.1. My EPD path is like /usr/epd
I have installed opencv using the method below the dashed line successfully .
Now cv2.so and cv.py are made in the directory /usr/local/lib/python2.7/site-
packages
But since my default python is epd, there is a path... |
Python urlopen error 404 directories
Question: I have this code :
from urllib.request import urlopen
from bs4 import BeautifulSoup
page = urlopen("http://www.doctoralia.com")
soup = BeautifulSoup(page)
myfile = open('data.txt','w')
myfile.write(soup.prettify())
myfile.close()... |
Virtual COM failing with pyserial/Linux, but working otherwise
Question: I am using Virtual COM Port (VCP) example code from
<http://blog.memsme.com/stm32f4-virtual-com-port-2/> on STM32F4 Discovery
Board to have USB VCP. This code is originally by ST and used by many other
people in their projects
Communication with ... |
Python Help. Code is going past if/Else Statement
Question: The assignment is to write a code that can do triangles (find the perimeter,
area, if it is an equilateral, right, etc.)
I believe my code is on target, but it doesn't render an error like it should
when the numbers don't form a triangle. Any help would be gr... |
I need to load an excel file into python 2.7 using an interface
Question: in order to do some operations with it but I would like to do it from an
interface in order to select the file instead of just running a script with
the name of the file, as the file name will change every day.
Answer: You can use Tkinter `asko... |
How to put appropriate line breaks in a string representing a mathematical expression that is 9000+ characters?
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expressions. I originally generate the expressions using sympy, a python
symbolic algebra package. A truncated example ... |
Error when installing Django using pythonbrew
Question: I am currently facing an issue when trying to install Django using pythonbrew.
My system is running ubuntu 12.04 (LTS) and I am following these instructions
to get django running:
<http://www.tangowithdjango.com/book/chapters/requirements.html#installing-
softwa... |
Python MySQL DB
Question: I have 4 tables in a Mysql Db named Employee. The structure of the tables are
as follows:
Edetails(**_id,name,age_**)
Edepartment(**_id,name,dept_**)
Edesignation(**_id,name,desig_**)
Esalary(**_id,name,basic,pf_**)
id is the primary key in all the tables. My question is when a user gi... |
Running python manage.py command from django with arguments
Question: I have the command :
./manage.py dbbackup --clean --compress
provided by the django-dbbackup app which performs a backup of my PostgreSQL
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Good way to collect programmatically generated test suites in nose or pytest
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class SafeTests(unittest.TestCase):
# snip 20 test functions
class BombTests(unittest.TestCase):
# snip 10 different test cases
I am currently doing t... |
Output from sys.stdout in interactive mode
Question: I tested sys.stdout.write in interactive mode; why do I get the 'extra' 1 and
2 suffixed to the numbers? If I run the code from a file I get the expected
output (1234...) Python 3.3 on a Windows machine
>>> import sys
>>> for i in range(15):
..... |
Where does python argument unpacking fall into the order of operations?
Question: <http://docs.python.org/2/reference/expressions.html#operator-precedence>
My guess is that it falls into one of the buckets above dict lookups since
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Weakref and __slots__
Question: Consider the following code:
from weakref import ref
class Klass(object):
# __slots__ = ['foo']
def __init__(self):
self.foo = 'bar'
k = Klass()
r = ref(k)
it works but when I uncomment the `__slots__` it breaks with ... |
Logging error involving .conf+main.py modules
Question: I think I'm missing something big and for the life of me, I can't figure it
out. I have a `logging.conf` file that I am trying my main (say, `xyz.py`)
file to read. But I am getting this weird error. I have the traceback below
followed by the configuration file - ... |
Python: string formatting and calling functions
Question: So I'm running in to the string formatting error when trying to pass the
arguments num1 and num2 to the function gcd. I'm not sure how to fix this.
Please bear with me since I'm new to Python programming. Thanks!
#!/usr/bin/python
import sys
... |
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