¡@
python Programming Glossary: codeWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python language. In most languages classes are just pieces of code that describe how to produce an object. That's kinda true in.. about metaclasses. The reason behind the complexity of the code using metaclasses is not because of metaclasses it's because.. can even use metaclasses. You can structure your code better. You never use metaclasses for something as trivial as..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained What does it do For example I'm trying to understand this code def node._get_child_candidates self distance min_dist max_dist.. Is it called again When subsequent calls do stop The code comes from Jochen Schulz jrschulz who made a great Python library.. you must understand that when you call the function the code you have written in the function body does not run. The function..
What does `if __name__ == “__main__”:` do? http://stackoverflow.com/questions/419163/what-does-if-name-main-do interpreter reads a source file it executes all of the code found in it. Before executing the code it will define a few.. executes all of the code found in it. Before executing the code it will define a few special variables. For example if the python.. another module. By doing the main check you can have that code only execute when you want to run the module as a program and..
Calling an external command in Python http://stackoverflow.com/questions/89228/calling-an-external-command-in-python flexible you can get the stdout stderr the real status code better error handling etc... . I think os.system is deprecated..
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
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference are passed by reference or value and the following code produces the unchanged value 'Original' class PassByReference.. by value assigning a new list to it had no effect that the code outside the method could see. The the_list was a copy of the.. value assigning a new string to it had no effect that the code outside the method could see. The the_string was a copy of the..
How do I capture SIGINT in Python? http://stackoverflow.com/questions/1112343/how-do-i-capture-sigint-in-python signal_handler print 'Press Ctrl C' signal.pause Code adapted from here . More documentation on signal can be found..
Request UAC elevation from within a Python script? http://stackoverflow.com/questions/130763/request-uac-elevation-from-within-a-python-script API is use the ShellExecuteEx trick explained in the Code Project article Pywin32 comes with a wrapper for ShellExecute..
Fastest way to list all primes below N in python http://stackoverflow.com/questions/2068372/fastest-way-to-list-all-primes-below-n-in-python n sieveOfEratosthenes n return the list of the primes n. # Code from dickinsm@gmail.com Nov 30 2006 # http groups.google.com.. of all the prime numbers end using the Sieve of Atkin. # Code by Steve Krenzel Sgk284@gmail.com improved # Code http krenzel.info.. Atkin. # Code by Steve Krenzel Sgk284@gmail.com improved # Code http krenzel.info p 83 # Info http en.wikipedia.org wiki Sieve_of_Atkin..
Code a timer in a python GUI in TKinter http://stackoverflow.com/questions/2400262/code-a-timer-in-a-python-gui-in-tkinter a timer in a python GUI in TKinter I need to code a program..
UnicodeDecodeError when redirecting to file http://stackoverflow.com/questions/4545661/unicodedecodeerror-when-redirecting-to-file also have a unique number associated with them called the Code Point . This number is the one used in Python's u and U Unicode..
What is the best way to repeatedly execute a function every x seconds in Python? http://stackoverflow.com/questions/474528/what-is-the-best-way-to-repeatedly-execute-a-function-every-x-seconds-in-python so perhaps something like this would work while True # Code executed here time.sleep 60 Are there any foreseeable problems..
Python: List vs Dict for look up table http://stackoverflow.com/questions/513882/python-list-vs-dict-for-look-up-table object storage. According to A.M. Kuchling in Beautiful Code the implementation tries to keep the hash 2 3 full so you might..
Simple Prime Generator in Python http://stackoverflow.com/questions/567222/simple-prime-generator-in-python with many comments # Sieve of Eratosthenes # Code by David Eppstein UC Irvine 28 Feb 2002 # http code.activestate.com..
Simple, Cross Platform MIDI Library for Python [closed] http://stackoverflow.com/questions/569321/simple-cross-platform-midi-library-for-python this question The MIDIUtil Library hosted here at Google Code does what you want write MIDI Files from a pure Python library...
Python Code Obfuscation [closed] http://stackoverflow.com/questions/576963/python-code-obfuscation Code Obfuscation closed Do you know of any tool that could assist.. I think but it wouldn't be as simple as calling Py_EvalCode. py2exe or freeze are other solution which convert the code..
Why is it “Easier to ask forgiveness than permission” in python, but not in Java? [closed] http://stackoverflow.com/questions/6092992/why-is-it-easier-to-ask-forgiveness-than-permission-in-python-but-not-in-java The Java mentality Is Catching a Null Pointer Exception a Code Smell Link to relevant parts of the famous book Effective Java..
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell http://stackoverflow.com/questions/6964392/speed-comparison-with-project-euler-c-vs-python-vs-erlang-vs-haskell in this case too. Conclusion Haskell is awesome. Resulting Code factorCount number factorCount' number isquare 1 0 fromEnum..
How to read large file, line by line in python http://stackoverflow.com/questions/8009882/how-to-read-large-file-line-by-line-in-python uses lot of memory so I am looking for an alternative Code so far for each_line in fileinput.input input_file do_something..
How to learn Python: Good Example Code? [closed] http://stackoverflow.com/questions/918/how-to-learn-python-good-example-code to learn Python Good Example Code closed I have been dabbling in Python for a couple months now.. there's no substitute for looking at code but I've found Code Like a Pythonista to be useful for those kinds of questions...
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python each usually about 20 chars wide though sometimes more . Code char input_a 512 char input_b 32 char input_c 512 while scanf..
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 cool one liner I tried it with reduce but I get an error. Code l 1 2 3 4 5 6 7 8 9 reduce lambda x y x.extend y l Error message..
IOError when trying to open existing files http://stackoverflow.com/questions/10802418/ioerror-when-trying-to-open-existing-files 1 file gives one list so that I can build a dataset. THE CODE # usr local bin import os string from sys import version # def..
How to generate a new map for jvectormap jquery plugin? http://stackoverflow.com/questions/11068645/how-to-generate-a-new-map-for-jvectormap-jquery-plugin if codes_file is used country_code_index index of REGION CODE attribute in shapefile or column in tab separated file if codes_file..
Error: AttributeError: Transaction instance has no attribute 'trans_handle' http://stackoverflow.com/questions/12781696/error-attributeerror-transaction-instance-has-no-attribute-trans-handle 1 CITY VARCHAR 50 STATE PROVINCE VARCHAR 50 ZIP POSTAL CODE VARCHAR 15 COUNTRY REGION VARCHAR 50 WEB SITE VARCHAR 25 NOTES.. 1 CITY VARCHAR 50 STATE PROVINCE VARCHAR 50 ZIP POSTAL CODE VARCHAR 15 COUNTRY REGION VARCHAR 50 WEB SITE VARCHAR 25 NOTES..
Connection error to Access database http://stackoverflow.com/questions/12800101/connection-error-to-access-database 1 CITY VARCHAR 50 STATE PROVINCE VARCHAR 50 ZIP POSTAL CODE VARCHAR 15 COUNTRY REGION VARCHAR 50 WEB SITE VARCHAR 25 NOTES..
Issues with a if/else loop in Python http://stackoverflow.com/questions/13305089/issues-with-a-if-else-loop-in-python it will still print the vowel code in this if statement CODE pyg 'ay' original raw_input 'Enter a word ' low_original original.lower..
Python Tkinter: Attempt to get widget size http://stackoverflow.com/questions/13327659/python-tkinter-attempt-to-get-widget-size also tried winfo_height winfo_width but i keep getting 1 CODE from tkinter import root Tk root.geometry '400x600' print root.winfo_width..
downloading files from Filetype fields? http://stackoverflow.com/questions/14195478/downloading-files-from-filetype-fields values how many it is present there CODE what I tried till now Only pain how to download that file. using..
BeautifulSoup to scrape street address http://stackoverflow.com/questions/20439868/beautifulsoup-to-scrape-street-address td td align right valign center div class tinyLink div td CODE from bs4 import BeautifulSoup import urllib2 url1 http www.salatomatic.com..
How do you use: isalnum, isdigit, isupper to test each character of a string? [closed] http://stackoverflow.com/questions/20582277/how-do-you-use-isalnum-isdigit-isupper-to-test-each-character-of-a-string up all the True values and turn it into a score. EXAMPLE CODE def upper_case points int 0 limit 3 for each in pword if each.isupper..
MATLAB to Python Code conversion (NumPy, SciPy, MatplotLib?) http://stackoverflow.com/questions/2326786/matlab-to-python-code-conversion-numpy-scipy-matplotlib 'COM18' 57600 timeout 5 scipy.fopen ser #MATLAB CODE fopen ser is this correct numBlocks ceil 17 N 256 1 rawdata.. of frame as data end #Extraction of sample values #MATLAB CODE frameStarts 0 N 1 ' 17 startIndex 1 #'#how to transpose matrix.. now N 6 Matrix each column is a channel of data #MATLAB CODE plot time series data MatPlotLib figure 1 subplot 2 1 1 plot..
Python/YACC: Resolving a shift/reduce conflict http://stackoverflow.com/questions/2939888/python-yacc-resolving-a-shift-reduce-conflict COURSE_NUMBER course_list_tail Rule 9 course DEPT_CODE COURSE_NUMBER python parsing yacc ply share improve this.. 2 statement statement OR_CONJ course Rule 3 course DEPT_CODE course_list Rule 4 course DEPT CODE course_list OR_CONJ COURSE_NUMBER.. Rule 3 course DEPT_CODE course_list Rule 4 course DEPT CODE course_list OR_CONJ COURSE_NUMBER Rule 5 course_list COURSE_NUMBER..
Creating a python dictionary from a line of text http://stackoverflow.com/questions/4356329/creating-a-python-dictionary-from-a-line-of-text generated file with thousands of lines like the following CODE XXX DATE 20101201 TIME 070400 CONDITION_CODES LTXT PRICE 999.0000.. the following CODE XXX DATE 20101201 TIME 070400 CONDITION_CODES LTXT PRICE 999.0000 QUANTITY 100 TSN 1510000001 Some lines..
How to obtain the keycodes in Python http://stackoverflow.com/questions/575650/how-to-obtain-the-keycodes-in-python terminal not a graphical interface. NOT NEED THE CHARACTER CODE. I NEED TO KNOW THE KEY CODE. Ex ord 'a' ord 'A' # 97 65 someFunction.. NOT NEED THE CHARACTER CODE. I NEED TO KNOW THE KEY CODE. Ex ord 'a' ord 'A' # 97 65 someFunction 'a' someFunction 'A'..
How to render my select field with WTForms? http://stackoverflow.com/questions/8463421/how-to-render-my-select-field-with-wtforms self.data NOTE THIS IS NOT TESTED NOR EVEN RUN PYTHON CODE BUT A VERY QUICK HACK GIVEN THE QUESTION AND THE UNDERLYING.. A VERY QUICK HACK GIVEN THE QUESTION AND THE UNDERLYING CODE FROM WTFORMS. But it should give you enough of a head start..
Using Python's Multiprocessing module to execute simultaneous and separate SEAWAT/MODFLOW model runs http://stackoverflow.com/questions/9874042/using-pythons-multiprocessing-module-to-execute-simultaneous-and-separate-seawa code he has provided will get me where I need to be. FINAL CODE Added cwd argument in subprocess.check_call to start each instance..
|