python Programming Glossary: to

http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained

keyword in Python What does it do For example I'm trying to understand this code def node._get_child_candidates self distance.. is returned Is it called again When subsequent calls do stop The code comes from Jochen Schulz jrschulz who made a great.. a great Python library for metric spaces. This is the link to the complete source http well adjusted.de ~jrschulz mspace ...

How do you split a list into evenly sized chunks in Python?

http://stackoverflow.com/questions/312443/how-do-you-split-a-list-into-evenly-sized-chunks-in-python

do you split a list into evenly sized chunks in Python I have a list of arbitrary length.. in Python I have a list of arbitrary length and I need to split it up into equal size chunks and operate on it. There.. a list of arbitrary length and I need to split it up into equal size chunks and operate on it. There are some obvious..

Python's slice notation

http://stackoverflow.com/questions/509211/pythons-slice-notation

step # start through not past end by step The key point to remember is that the end value represents the first value that.. a 2 # everything except the last two items Python is kind to the programmer if there are fewer items than you ask for. For..

The meaning of a single- and a double-underscore before an object name in Python

http://stackoverflow.com/questions/1301346/the-meaning-of-a-single-and-a-double-underscore-before-an-object-name-in-python

However nothing special is done with the name itself. To quote PEP 8 _single_leading_underscore weak internal use indicator...

Differences between isinstance() and type() in python

http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python

link . python types share improve this question To summarize the contents of other already good answers isinstance..

In Python, how do I determine if an object is iterable?

http://stackoverflow.com/questions/1952464/in-python-how-do-i-determine-if-an-object-is-iterable

iter method or in the case of strings the getitem method. To check if an object is list like and not string like then the..

The Python yield keyword explained

http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained

iterator generator yield share improve this question To understand what yield does you must understand what generators.. a huge set of values that you will only need to read once. To master yield you must understand that when you call the function..

Unexpected feature in a Python list of lists

http://stackoverflow.com/questions/240178/unexpected-feature-in-a-python-list-of-lists

. When you then change x all three references are changed. To fix it you need to make sure that you create a new list at each..

Python 'self' explained

http://stackoverflow.com/questions/2709821/python-self-explained

needs to be added to every function as a parameter. To illustrate in Ruby I can do this class myClass def myFunc name..

Print in terminal with colors using Python?

http://stackoverflow.com/questions/287871/print-in-terminal-with-colors-using-python

self.OKGREEN '' self.WARNING '' self.FAIL '' self.ENDC '' To use code like this you can do something like print bcolors.WARNING..

In a django form, How to make a field readonly (or disabled) so that it cannot be edited?

http://stackoverflow.com/questions/324477/in-a-django-form-how-to-make-a-field-readonly-or-disabled-so-that-it-cannot-b

forms field readonly share improve this question To disable entry on the widget and prevent malicious POST hacks..

*args and **kwargs? [duplicate]

http://stackoverflow.com/questions/3394835/args-and-kwargs

arguments and the values become values of these arguments. To be honest I don't understand and don't get for what programming..

Suggestions for a Cron like scheduler in Python?

http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python

be a different thread but not in a different process. To this end I'm looking for the expressivity of the cron time expression..

How can I merge (union) two Python dictionaries in a single expression?

http://stackoverflow.com/questions/38987/how-can-i-merge-union-two-python-dictionaries-in-a-single-expression

want that final merged dict in z not x. How can I do this To be extra clear the last one wins conflict handling of dict.update.. If you use Python 3 it is only a little more complicated. To create z z dict list x.items list y.items z 'a' 1 'c' 11 'b'..

How do I unload (reload) a Python module?

http://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module

code changes without restarting the server process itself. To quote from the docs Python modules code is recompiled and the..

Python's slice notation

http://stackoverflow.com/questions/509211/pythons-slice-notation

Do you have a good reference on Python's slice notation To me this notation needs a bit of picking up. It looks extremely..

Lazy Method for Reading Big File in Python?

http://stackoverflow.com/questions/519633/lazy-method-for-reading-big-file-in-python

python file io generator share improve this question To write a lazy function just use yield def read_in_chunks file_object..

How can you profile a Python script?

http://stackoverflow.com/questions/582336/how-can-you-profile-a-python-script

when running a script python m cProfile myscript.py To make it even easier I made a little batch file called 'profile.bat'..

How do I duplicate sys.stdout to a log file in python?

http://stackoverflow.com/questions/616645/how-do-i-duplicate-sys-stdout-to-a-log-file-in-python

generated by a python app including system call output . To clarify To redirect all output I do something like this and.. by a python app including system call output . To clarify To redirect all output I do something like this and it works great..

Simple Digit Recognition OCR in OpenCV-Python

http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python

are of same font and size i decided to try on this . To prepare the data for training i made a small code in OpenCV...

Adding a Method to an Existing Object

http://stackoverflow.com/questions/972/adding-a-method-to-an-existing-object

instance a.barFighters function barFighters at 0x00A98EF0 To bind it we can use the MethodType function in the types module..

ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

http://stackoverflow.com/questions/10062954/valueerror-the-truth-value-of-an-array-with-more-than-one-element-is-ambiguous

mask r dt startdate r dt enddate selected r mask TO r mlab.csv2rec datafile delimiter ' ' names COL_HEADERS mask..

Implementing Transport Layer Security in Python - Simple Mail Client

http://stackoverflow.com/questions/12549593/implementing-transport-layer-security-in-python-simple-mail-client

print '250 reply not received from server.' # Send RCPT TO command and print server response. rcptToCommand 'RCPT To macyali@gmail.com..

Python time limit

http://stackoverflow.com/questions/13893287/python-time-limit

game is over when I type last character. LOOP WILL NOT STOP UNTIL IT FINISHES AND WE DISCOVER THAT WE ARE PAST OUR DEADLINE... WE DISCOVER THAT WE ARE PAST OUR DEADLINE. THE TASK NEEDS TO BE INTERRUPTED IN PROGRESS AS SOON AS THE TIME ELAPSES. max_time..

Convert gzipped data fetched by urllib2 to HTML

http://stackoverflow.com/questions/1704754/convert-gzipped-data-fetched-by-urllib2-to-html

if response.info 'content encoding' 'gzip' HOW TO DECOMPRESS DATA TO HTML python gzip urllib2 share improve.. 'content encoding' 'gzip' HOW TO DECOMPRESS DATA TO HTML python gzip urllib2 share improve this question Try..

Django + MySQL on Mac OS 10.6.2 Snow Leopard

http://stackoverflow.com/questions/1904039/django-mysql-on-mac-os-10-6-2-snow-leopard

to the right place for your system PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER To do so start the server..

How to serialize db.Model objects to json?

http://stackoverflow.com/questions/2114659/how-to-serialize-db-model-objects-to-json

properties by overriding JSONEncoder's default method. # TODO Improve coverage for all of App Engine's Property types. def.. type. return GqlEncoder .encode input save as json.py TO USE import cgi import os import json from google.appengine.ext.webapp..

HOW TO: Draggable legend in matplotlib

http://stackoverflow.com/questions/2539477/how-to-draggable-legend-in-matplotlib

TO Draggable legend in matplotlib QUESTION I'm drawing a legend..

Python - anyone have a memoizing decorator that can handle unhashable arguments?

http://stackoverflow.com/questions/4669391/python-anyone-have-a-memoizing-decorator-that-can-handle-unhashable-arguments

becomes non trivial but I just thought I'd ask. EDITED TO GIVE CONTEXT I am working on a function that returns a Parnas..

How to obtain the keycodes in Python

http://stackoverflow.com/questions/575650/how-to-obtain-the-keycodes-in-python

a graphical interface. NOT NEED THE CHARACTER CODE. I NEED TO KNOW THE KEY CODE. Ex ord 'a' ord 'A' # 97 65 someFunction..

Python CSV to SQLite

http://stackoverflow.com/questions/5942402/python-csv-to-sqlite

field4 field5 in reader cur.execute 'INSERT OR IGNORE INTO mytable field2 field4 VALUES ' field2 field4 Everything works.. the exception... IT TAKES AN INCREDIBLE AMOUNT OF TIME TO PROCESS. Am I coding it incorrectly Is there a better way to..

Sending Email With Python

http://stackoverflow.com/questions/6270782/sending-email-with-python

import smtplib #SERVER localhost FROM 'monty@python.com' TO jon@mycompany.com # must be a list SUBJECT Hello TEXT This message.. actual message message From s To s Subject s s FROM .join TO SUBJECT TEXT # Send the mail server smtplib.SMTP 'myserver'.. mail server smtplib.SMTP 'myserver' server.sendmail FROM TO message server.quit However if I try to wrap it in a function..

Moving a file in python

http://stackoverflow.com/questions/8858008/moving-a-file-in-python

do the equivalent of mv ... in python source_files ' PATH TO FOLDER ' destination_folder 'PATH TO FOLDER' # equivalent of.. source_files ' PATH TO FOLDER ' destination_folder 'PATH TO FOLDER' # equivalent of mv source_files destination_folder ..

Creating a logging handler to connect to Oracle?

http://stackoverflow.com/questions/935930/creating-a-logging-handler-to-connect-to-oracle

# VINAY SAJIP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING # ALL IMPLIED WARRANTIES OF MERCHANTABILITY.. WHETHER # IN AN ACTION OF CONTRACT NEGLIGENCE OR OTHER TORTIOUS ACTION ARISING OUT # OF OR IN CONNECTION WITH THE USE.. self.dsn self.uid self.pwd self.SQL INSERT INTO Events Created RelativeCreated Name LogLevel LevelText..