¡@
python Programming Glossary: rollinghttp://stackoverflow.com/questions/11254384/when-to-commit-data-in-zodb roll back to this savepoint some storages do not support rolling back and signalling you do not need this makes your code work..
Python append() vs. + operator on lists, why do these give different results? http://stackoverflow.com/questions/2022031/python-append-vs-operator-on-lists-why-do-these-give-different-results
DatabaseError: current transaction is aborted, commands ignored until end of transaction block http://stackoverflow.com/questions/2979369/databaseerror-current-transaction-is-aborted-commands-ignored-until-end-of-tra an error and you try to run another query without first rolling back the transaction. To fix it you'll want to figure out where..
Inverse Distance Weighted (IDW) Interpolation with Python http://stackoverflow.com/questions/3104781/inverse-distance-weighted-idw-interpolation-with-python a straight forward way to calculate IDW. I'm thinking of rolling my own implementation possibly using some of the scipy functionality.. .2g p .2g N Ndim Nask Nnear leafsize eps p def terrain x ~ rolling hills return np.sin 2 np.pi cycle np.mean x axis 1 known np.random.uniform..
How to escape os.system() calls in Python? http://stackoverflow.com/questions/35817/how-to-escape-os-system-calls-in-python
SQLAlchemy: What's the difference between flush() and commit()? http://stackoverflow.com/questions/4201455/sqlalchemy-whats-the-difference-between-flush-and-commit Foo .all s2.rollback # Foo 'B' has not been committed and rolling # back the session's transaction removes it # from the session...
Efficient Numpy 2D array construction from 1D array http://stackoverflow.com/questions/4923617/efficient-numpy-2d-array-construction-from-1d-array array For one dimensional arrays import numpy as np def rolling a window shape a.size window 1 window strides a.itemsize a.itemsize.. a shape shape strides strides a np.arange 10 print rolling a 3 Where a is your input array and window is the length of.. window .T 1000 loops best of 3 256 us per loop timeit rolling a window 100000 loops best of 3 12 us per loop If we generalize..
Using strides for an efficient moving average filter http://stackoverflow.com/questions/4936620/using-strides-for-an-efficient-moving-average-filter inadvertently make a copy of your array. While the initial rolling array is just a view into the memory of your original array.. At any rate here's how you do it import numpy as np def rolling_window_lastaxis a window Directly taken from Erik Rigtorp's.. a shape shape strides strides def rolling_window a window if not hasattr window '__iter__' return rolling_window_lastaxis..
Rolling or sliding window iterator in Python http://stackoverflow.com/questions/6822725/rolling-or-sliding-window-iterator-in-python or sliding window iterator in Python I need a rolling window aka sliding window iterable over a sequence iterator.. less verbose or more efficient method for doing this def rolling_window seq window_size it iter seq win it.next for cnt in xrange.. 1 win 1 win 1 e yield win if __name__ __main__ for w in rolling_window xrange 6 3 print w Example output 0 1 2 1 2 3 2 3 4 3..
Accepting email address as username in Django http://stackoverflow.com/questions/778382/accepting-email-address-as-username-in-django Django Is there a good way to do this in django without rolling my own authentication system I want the username to be the user's..
Python, want logging with log rotation and compression http://stackoverflow.com/questions/8467978/python-want-logging-with-log-rotation-and-compression set... self.stream self._open if self.maxBytes 0 # are we rolling over msg s n self.format record self.stream.seek 0 2 #due to..
|