python Programming Glossary: item

What can you use Python generator functions for?

http://stackoverflow.com/questions/102535/what-can-you-use-python-generator-functions-for

You can think of generators as returning multiple items as if they return a list but instead of returning them all.. by one and the generator function is paused until the next item is requested. Generators are good for calculating large sets..

Remove items from a list while iterating in Python

http://stackoverflow.com/questions/1207406/remove-items-from-a-list-while-iterating-in-python

items from a list while iterating in Python I'm iterating over a.. of code_to_remove_tup I can't figure out how to remove the item in this fashion. python iteration share improve this question..

Get last n lines of a file with Python, similar to tail

http://stackoverflow.com/questions/136168/get-last-n-lines-of-a-file-with-python-similar-to-tail

I want to paginate through the lines of the log file. The items in the file are line based with the newest item on the bottom... file. The items in the file are line based with the newest item on the bottom. So I need a tail method that can read n lines..

A Transpose/Unzip Function in Python (inverse of zip)

http://stackoverflow.com/questions/19339/a-transpose-unzip-function-in-python-inverse-of-zip

Function in Python inverse of zip I have a list of 2 item tuples and I'd like to convert them to 2 lists where the first.. convert them to 2 lists where the first contains the first item in each tuple and the second list holds the second item. For.. item in each tuple and the second list holds the second item. For example original 'a' 1 'b' 2 'c' 3 'd' 4 # and I want to..

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

ModelForm class Meta model Item exclude 'added_by' def new_item_view request if request.method 'POST' form ItemForm request.POST.. to write another class ItemUpdateForm for updating the item def update_item_view request if request.method 'POST' form ItemUpdateForm.. class ItemUpdateForm for updating the item def update_item_view request if request.method 'POST' form ItemUpdateForm request.POST..

Suggestions for a Cron like scheduler in Python?

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

set Universal set match everything def __contains__ self item return True allMatch AllMatch def conv_to_set obj # Allow single.. if isinstance obj int long return set obj # Single item if not isinstance obj set obj set obj return obj # The actual..

Python string formatting: % vs. .format

http://stackoverflow.com/questions/5082452/python-string-formatting-vs-format

hi there s name # supply the single argument as a single item tuple which is just ugly. .format doesn't have those issues...

Python's slice notation

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

this question It's pretty simple really a start end # items start through end 1 a start # items start through the rest.. really a start end # items start through end 1 a start # items start through the rest of the array a end # items from the.. start # items start through the rest of the array a end # items from the beginning through end 1 a # a copy of the whole array..

What is the best way to implement nested dictionaries in Python?

http://stackoverflow.com/questions/635483/what-is-the-best-way-to-implement-nested-dictionaries-in-python

of perl's autovivification feature. def __getitem__ self item try return dict.__getitem__ self item except KeyError.. of perl's autovivification feature. def __getitem__ self item try return dict.__getitem__ self item except KeyError value.. feature. def __getitem__ self item try return dict.__getitem__ self item except KeyError value self item type self return..

Simple Digit Recognition OCR in OpenCV-Python

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

we use KNearest.find_nearest function to find the nearest item to the one we gave. If lucky it recognises the correct digit...

Making a flat list out of list of lists in Python [duplicate]

http://stackoverflow.com/questions/952914/making-a-flat-list-out-of-list-of-lists-in-python

'extend' python list share improve this question item for sublist in l for item in sublist is faster than the shortcuts.. share improve this question item for sublist in l for item in sublist is faster than the shortcuts posted so far. For evidence.. library python mtimeit s'l 1 2 3 4 5 6 7 8 9 99' ' item for sublist in l for item in sublist ' 10000 loops best of 3..

How to create a DLL with SWIG from Visual Studio 2010

http://stackoverflow.com/questions/11693047/how-to-create-a-dll-with-swig-from-visual-studio-2010

Right click the Project in Solution Explorer Add Existing Item... and select your .i file. Right click the .i file Properties.. and select Configuration All Configurations . Change Item Type to Custom Build Tool and click Apply. Select Custom Build.. in this filter . Right click Generated Files Add Exiting Item and select the _wrap.cxx file that was generated by the compile...

Need Help using XPath in ElementTree

http://stackoverflow.com/questions/1319385/need-help-using-xpath-in-elementtree

My XML file looks like the following xml version 1.0 ItemSearchResponse xmlns http webservices.amazon.com AWSECommerceService.. http webservices.amazon.com AWSECommerceService 2008 08 19 Items Item ItemAttributes ListPrice Amount 2260 Amount ListPrice.. AWSECommerceService 2008 08 19 Items Item ItemAttributes ListPrice Amount 2260 Amount ListPrice ItemAttributes..

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

need to be read only. For example when creating a new Item model all fields must be editable but while updating the record.. sku field so that it is visible but cannot be edited class Item models.Model sku models.CharField max_length 50 description.. max_length 200 added_by models.ForeignKey User class ItemForm ModelForm class Meta model Item exclude 'added_by' def new_item_view..

Django equivalent for count and group by

http://stackoverflow.com/questions/327807/django-equivalent-for-count-and-group-by

models.Model name models.CharField max_length 60 class Item models.Model name models.CharField max_length 60 category models.ForeignKey.. is not part of a public API and could change query_set Item.objects.extra select 'count' 'count 1 ' order_by ' count'..

Crawling with an authenticated session in Scrapy

http://stackoverflow.com/questions/5851213/crawling-with-an-authenticated-session-in-scrapy

I'm assuming . And I'm not sure how to go about saving the Items that I create. Anyone done something like this before Authenticate.. self response # Scrape data from page Saving items Items your Spider returns are passed along to the Pipeline which.. If you have any problems questions in regards to Item s don't hesitate to pop open a new question and I'll do my best..

Using Python Iterparse For Large XML Files

http://stackoverflow.com/questions/7171140/using-python-iterparse-for-large-xml-files

in lxml to do it. My file is of the format item title Item 1 title desc Description 1 desc item item title Item 2 title.. title Item 1 title desc Description 1 desc item item title Item 2 title desc Description 2 desc item and so far my solution..