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python Programming Glossary: emptyWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python the class tuple of the parent class for inheritance can be empty dictionary containing attributes names and values e.g. class..
Common pitfalls in Python [duplicate] http://stackoverflow.com/questions/1011431/common-pitfalls-in-python execute if var is None if var # execute if var is a non empty string list dictionary tuple non 0 etc if not var # execute.. object attribute it will gives you its value unless it's empty. In that case it will return the class attributes. It implies..
Programmatically saving image to Django ImageField http://stackoverflow.com/questions/1308386/programmatically-saving-image-to-django-imagefield not transfer any of the data over leaving it basically an empty re named file. What's left in the 'upload_to' path is 2 files.. actual image and one that is the name of the image but is empty and of course the ImageField path is set to the empty file that.. is empty and of course the ImageField path is set to the empty file that Django try to create. In case that was unclear I'll..
http://stackoverflow.com/questions/15112125/if-x-or-y-or-z-blah argument that is 'truthy' e.g. not False numeric 0 or empty see boolean expressions for details on what Python considers..
python random string generation with upper case letters and digits http://stackoverflow.com/questions/2257441/python-random-string-generation-with-upper-case-letters-and-digits x in range 3 'd' 'a' 'c' Then we just join them with an empty string so the sequence becomes a string ''.join 'a' 'b' 'b'..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained there is no value to return. The generator is considered empty once the function runs but does not hit yield anymore. It can.. the function arrives here the generator will be considered empty # there is no more than two values the left and the right children.. values the left and the right children Caller # Create an empty list and a list with the current object reference result candidates..
http://stackoverflow.com/questions/280243/python-linked-list Chapter 17 Linked lists A linked list is either the empty list represented by None or a node that contains a cargo object..
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 when the second list fills up add it to the first list and empty the second list for the next round of data but this is potentially..
Weighted random selection with and without replacement http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement weight and place as much of it's mass as possible in an empty partition. In this example we see that 'a' fills the first partition...
http://stackoverflow.com/questions/448271/what-is-init-py-for path. In the simplest case __init__.py can just be an empty file but it can also execute initialization code for the package..
http://stackoverflow.com/questions/509211/pythons-slice-notation you ask for a 2 and a only contains one element you get an empty list instead of an error. Sometimes you would prefer the error..
How to do relative imports in Python? http://stackoverflow.com/questions/72852/how-to-do-relative-imports-in-python there a clean way Edit all my __init__.py 's are currently empty Edit2 I'm trying to do this because sub2 contains classes that..
Circular (or cyclic) imports in Python http://stackoverflow.com/questions/744373/circular-or-cyclic-imports-in-python imports may return modules which appear to be partly empty. Finally the executing script runs in a module named __main__..
http://stackoverflow.com/questions/7933596/django-dynamic-model-fields 'something' data 'a' '1' 'b' '2' instance.data 'a' '1' empty Something.objects.create name 'empty' empty.data empty.data.. instance.data 'a' '1' empty Something.objects.create name 'empty' empty.data empty.data 'a' '1' empty.save Something.objects.get.. 'a' '1' empty Something.objects.create name 'empty' empty.data empty.data 'a' '1' empty.save Something.objects.get name..
How to debug C extensions for Python on Windows http://stackoverflow.com/questions/11713701/how-to-debug-c-extensions-for-python-on-windows Click Next then choose DLL for Application type and check Empty Project . In the Solution Explorer right click on Header Files..
How to identify binary and text files using Python? [duplicate] http://stackoverflow.com/questions/1446549/how-to-identify-binary-and-text-files-using-python 127 list n r t b _null_trans string.maketrans if not s # Empty files are considered text return True if 0 in s # Files with..
Capturing emoticons using regular expression in python http://stackoverflow.com/questions/14571103/capturing-emoticons-using-regular-expression-in-python ' ' # Mix of a smile and a frown should_not_match '' # Empty string ' foo' # Extraneous characters appended 'foo ' # Extraneous..
Render anti-aliased text on transparent surface in pygame http://stackoverflow.com/questions/15488293/render-anti-aliased-text-on-transparent-surface-in-pygame self.dirty True self.text_lines self._text_paragraph Empty nText self._render def _render self # render list self.dirty..
Python file.tell() giving strange numbers? http://stackoverflow.com/questions/15934950/python-file-tell-giving-strange-numbers blah blah blah blah blah blah blah blah blah blah data3 Empty data4 Empty I'm trying to navigate around the file and thus.. blah blah blah blah blah blah blah blah data3 Empty data4 Empty I'm trying to navigate around the file and thus I use .tell.. blah blah blah blah blah blah blah blah n' 164 ' data3 Empty n' 179 ' n' 181 ' data4 Empty' 194 '' 194 What's with the 18446744073709551714..
Python Package For Multi-Threaded Spider w/ Proxy Support? http://stackoverflow.com/questions/1628766/python-package-for-multi-threaded-spider-w-proxy-support BeautifulSoup import BeautifulSoup from Queue import Queue Empty from threading import Thread visited set queue Queue def get_parser.. visited.add href queue.put href print href except Empty pass return parse if __name__ '__main__' host root charset sys.argv..
Asynchronous data through Bloomberg's new data API (COM v3) with Python? http://stackoverflow.com/questions/2005234/asynchronous-data-through-bloombergs-new-data-api-com-v3-with-python from pythoncom import PumpWaitingMessages Empty Missing from time import time class BBCommEvent def OnData self.. False blp.Subscribe 'EUR Curncy' 1 'LAST_PRICE' Results Empty blp.Flush end_time time 5 while 1 PumpWaitingMessages if end_time..
Non-blocking read on a subprocess.PIPE in python http://stackoverflow.com/questions/375427/non-blocking-read-on-a-subprocess-pipe-in-python from threading import Thread try from Queue import Queue Empty except ImportError from queue import Queue Empty # python 3.x.. Queue Empty except ImportError from queue import Queue Empty # python 3.x ON_POSIX 'posix' in sys.builtin_module_names def.. try line q.get_nowait # or q.get timeout .1 except Empty print 'no output yet' else # got line # ... do something with..
http://stackoverflow.com/questions/4214773/kill-process-with-python os.system cp 0 ' 0 dup 1 ' .format log_file_name dt.now # Empty the logging file. with open log_file_name w as f pass # Run..
Regex for managing escaped characters for items like string literals http://stackoverflow.com/questions/430759/regex-for-managing-escaped-characters-for-items-like-string-literals target not found in base print test s passed test check Empty '' check single escape1 r Example 'Foo ' Bar' End. r Foo ' Bar..
Is there a Perl equivalent of Python's re.findall/re.finditer (iterative regex results)? http://stackoverflow.com/questions/467800/is-there-a-perl-equivalent-of-pythons-re-findall-re-finditer-iterative-regex-r a list of tuples if the pattern has more than one group. Empty matches are included in the result unless they touch the beginning..
http://stackoverflow.com/questions/5276967/python-in-xcode-4-or-xcode-5 File New New File . Select Other under Mac OS X . Select Empty and click Next . Navigate to the project folder it will not..
Most elegant way to check if the string is empty in Python? http://stackoverflow.com/questions/9573244/most-elegant-way-to-check-if-the-string-is-empty-in-python as good. python string share improve this question Empty strings are falsy which means they are considered false in a..
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