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python Programming Glossary: loopPython List Comprehension Vs. Map http://stackoverflow.com/questions/1247486/python-list-comprehension-vs-map python mtimeit s'xs range 10 ' 'map hex xs ' 100000 loops best of 3 4.86 usec per loop python mtimeit s'xs range 10 '.. 10 ' 'map hex xs ' 100000 loops best of 3 4.86 usec per loop python mtimeit s'xs range 10 ' ' hex x for x in xs ' 100000.. mtimeit s'xs range 10 ' ' hex x for x in xs ' 100000 loops best of 3 5.58 usec per loop An example of how performance..
Flatten (an irregular) list of lists in Python http://stackoverflow.com/questions/2158395/flatten-an-irregular-list-of-lists-in-python
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained it hits yield then it'll return the first value of the loop. Then each other call will run the loop you have written in.. first value of the loop. Then each other call will run the loop you have written in the function one more time and return the.. runs but does not hit yield anymore. It can be because the loop had come to an end or because you do not satisfy a if else anymore...
Short Description of Python Scoping Rules http://stackoverflow.com/questions/291978/short-description-of-python-scoping-rules the class namespace In the function definition In the for loop index variable Inside the for loop Also there is the context.. definition In the for loop index variable Inside the for loop Also there is the context during execution when the function.. Foo code2 def spam..... code3 for code4.. code5 x The for loop does not have it's own namespace. It would look in the LEGB..
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 out of list of lists in Python. I can do that in a for loop but maybe there is some cool one liner I tried it with reduce.. 9 99' ' item for sublist in l for item in sublist ' 10000 loops best of 3 143 usec per loop python mtimeit s'l 1 2 3 4 5 6.. l for item in sublist ' 10000 loops best of 3 143 usec per loop python mtimeit s'l 1 2 3 4 5 6 7 8 9 99' 'sum l ' 1000 loops..
change image based on click in pygame http://stackoverflow.com/questions/10876324/change-image-based-on-click-in-pygame image_height 100 #height of the buttons counter 0 #Main Loop while ending False counter 1 clock.tick TIMER for event in pygame.event.get..
http://stackoverflow.com/questions/11233244/python-while-loop-not-working While Loop Not Working def main again y while again y or again Y module..
Compare object instances for equality by their attributes in Python http://stackoverflow.com/questions/1227121/compare-object-instances-for-equality-by-their-attributes-in-python self other # Is the other instance of the same object # Loop through __dict__ and compare values to attributes of other ..
How can I make my code be a set? http://stackoverflow.com/questions/12886450/how-can-i-make-my-code-be-a-set to explain approach Make an empty set for once and more . Loop over every element of your list and If you haven't seen it before.. what elements you've seen exactly once in the set once . Loop over the elements of the list and if you've seen it once add..
Python Drop into REPL (Read, Eval, Print, Loop) http://stackoverflow.com/questions/1395913/python-drop-into-repl-read-eval-print-loop Drop into REPL Read Eval Print Loop Is there a way to programmatically force a Python script to..
Python For Loop List Interesting Result http://stackoverflow.com/questions/14465604/python-for-loop-list-interesting-result For Loop List Interesting Result a 0 1 2 3 4 5 for b in a print str..
Loop “Forgets” to Remove Some Items http://stackoverflow.com/questions/17299581/loop-forgets-to-remove-some-items &ldquo Forgets&rdquo to Remove Some Items in this code I am..
Can anybody tell what is wrong with this simple while loop? [closed] http://stackoverflow.com/questions/20821298/can-anybody-tell-what-is-wrong-with-this-simple-while-loop if attack 'y' print Bad choice you died. done False print Loop stopped edit sorry for the time delay I was reading your answers.. if attack 'y' print Bad choice you died. Done False print Loop stopped As Makoto has pointed out in Python 2.x the parentheses..
http://stackoverflow.com/questions/2184287/python-leave-loop-early Leave Loop Early How do I leave a loop early in python for a in b if criteria..
Image color detection using python http://stackoverflow.com/questions/2270874/image-color-detection-using-python this question Use a PIL Python Image Library histogram. Loop over the histogram and take the average of pixel color weighed..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained the current object reference result candidates list self # Loop on candidates they contain only one element at the beginning..
TkInter Invoke Event in Main Loop http://stackoverflow.com/questions/270648/tkinter-invoke-event-in-main-loop Invoke Event in Main Loop How do you invoke a tKInter event from a separate object I'm..
python, basic question on loops http://stackoverflow.com/questions/273612/python-basic-question-on-loops
What are good ways to make my Python code run first time? http://stackoverflow.com/questions/299704/what-are-good-ways-to-make-my-python-code-run-first-time a great improvement over the built in REPL Read Eval Print Loop . If you actually want to step through your code the python..
http://stackoverflow.com/questions/3775912/fourier-space-filtering h via spline interpolation to be of size B 2P t h_scaled y Loop Take block of length B 2P from x called x_b Perform y_b ifft..
Possible Fix to deal with Python Memory usage http://stackoverflow.com/questions/5722872/possible-fix-to-deal-with-python-memory-usage my code that genereates C1 objects has one huge For Loop that calls this function for every Store. python share improve..
Assignment Condition in Python While Loop http://stackoverflow.com/questions/7780998/assignment-condition-in-python-while-loop Condition in Python While Loop In C one can do while i a b but in Python it appears one cannot...
Loop backwards using indices in Python? http://stackoverflow.com/questions/869885/loop-backwards-using-indices-in-python backwards using indices in Python I am trying to loop from..
PyQt - how to detect and close UI if it's already running? http://stackoverflow.com/questions/8786136/pyqt-how-to-detect-and-close-ui-if-its-already-running UI again will completely freeze Maya with the error Event Loop is already running Manually closing the UI before re running..
IOError when trying to open existing files http://stackoverflow.com/questions/10802418/ioerror-when-trying-to-open-existing-files 48 54 print z_coords1 #diagnostic return z_coords1 # ### LOOP OVER DIRECTORY location ' Users spyros Desktop 3NY8MODELSHUMAN..
http://stackoverflow.com/questions/13893287/python-time-limit in this code the game is over when I type last character. LOOP WILL NOT STOP UNTIL IT FINISHES AND WE DISCOVER THAT WE ARE..
http://stackoverflow.com/questions/19966094/space-invaders-project 0 # GLOBAL VARIABLES x 0 resetShot 0 move_x 0 # MAIN GAME LOOP while True clock.tick 60 screen.fill 0 0 0 #x y pygame.mouse.get_pos.. center self.screen.get_rect .center # MAIN GAME LOOP def run self clock pygame.time.Clock RUNNING True PAUSED False..
python create object and add attributes to it http://stackoverflow.com/questions/2827623/python-create-object-and-add-attributes-to-it because I didn't know how to do obj.a.NAME FROM FOR LOOP How would I set the attribute based on the value of p in the..
Upload and parse csv file with google app engine http://stackoverflow.com/questions/2970599/upload-and-parse-csv-file-with-google-app-engine
Pausing a thread using threading class http://stackoverflow.com/questions/3262346/pausing-a-thread-using-threading-class wait_for_event args e t.start while True print 'MAIN LOOP still in the main loop..' time.sleep 4 print 'MAIN LOOP I just.. LOOP still in the main loop..' time.sleep 4 print 'MAIN LOOP I just set the flag..' e.set print 'MAIN LOOP now Im gonna do.. print 'MAIN LOOP I just set the flag..' e.set print 'MAIN LOOP now Im gonna do some processing n shi t' time.sleep 4 print..
How can I speed up update/replace operations in PostgreSQL? http://stackoverflow.com/questions/962361/how-can-i-speed-up-update-replace-operations-in-postgresql array_lower data 1 0 .. COALESCE array_upper data 1 1 LOOP UPDATE item SET a0 data i .a0 a1 data i .a1 a2 data i .a2 WHERE.. .a0 a1 data i .a1 a2 data i .a2 WHERE key data i .key END LOOP END LANGUAGE plpgsql Create an insert_or_replace rule so that..
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