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python Programming Glossary: sliceCount occurrence of a character in a Python string http://stackoverflow.com/questions/1155617/count-occurrence-of-a-character-in-a-python-string . Optional arguments start and end are interpreted as in slice notation. sentence 'Mary had a little lamb' sentence.count 'a'..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python Strings are sequences you could loop over them index them slice them ... but you generally want to treat them as scalar types..
Modifying list while iterating http://stackoverflow.com/questions/1637807/modifying-list-while-iterating would never do it under any circumstance. You can use the slice operator mylist 3 to skip across to every third item in your..
How to clone a list in python? http://stackoverflow.com/questions/2612802/how-to-clone-a-list-in-python this question You have various possibilities You can slice it new_list old_list Alex Martelli's opinion at least back in.. and instance a.append 'baz' foo.val 5 print original r n slice r n list r n copy r n deepcopy r a b c d e Result original 'foo'.. r n deepcopy r a b c d e Result original 'foo' 5 'baz' slice 'foo' 5 list 'foo' 5 copy 'foo' 5 deepcopy 'foo' 1 share improve..
Speed up bitstring/bit operations in Python? http://stackoverflow.com/questions/2897297/speed-up-bitstring-bit-operations-in-python #2 One more try I modified gmpy2 to accept xmpz.bit_set slice . Using the following code the run time for all primes less.. limit break yield prime if prime sub_limit flags.bit_set slice 2 current current 1 limit 1 prime start time.time result list.. to limit.''' # Increment by 1 to account for the fact that slices do not include # the last index value but we do want to include..
What is the difference between list and list[:] in python? http://stackoverflow.com/questions/4081561/what-is-the-difference-between-list-and-list-in-python the list. When assigning list re binds the name and list slice assigns replacing what was previously in the list. Also don't..
How can I improve my paw detection? http://stackoverflow.com/questions/4087919/how-can-i-improve-my-paw-detection thresh coded_paws num_paws sp.ndimage.label filled data_slices sp.ndimage.find_objects coded_paws return object_slices Blur.. sp.ndimage.find_objects coded_paws return object_slices Blur the input data a bit to make sure the paws have a continuous.. else . Isolate the contiguous regions using data_slices sp.ndimage.find_objects coded_paws . This returns a list of..
http://stackoverflow.com/questions/509211/pythons-slice-notation slice notation Do you have a good reference on Python's slice notation.. slice notation Do you have a good reference on Python's slice notation To me this notation needs a bit of picking up. It looks.. my head around it and am looking for a good guide. python slice share improve this question It's pretty simple really a..
Use numpy array in shared memory for multiprocessing http://stackoverflow.com/questions/7894791/use-numpy-array-in-shared-memory-for-multiprocessing initargs shared_arr as p # many processes access the same slice stop_f N 10 p.map_async f slice stop_f M # many processes access.. processes access the same slice stop_f N 10 p.map_async f slice stop_f M # many processes access different slices of the same.. f slice stop_f M # many processes access different slices of the same array assert M 2 # odd step N 10 p.map_async g..
http://stackoverflow.com/questions/931092/reverse-a-string-in-python How about 'hello world' 1 'dlrow olleh' This is extended slice syntax. It works by doing begin end step by leaving begin and..
Is it possible something like lvalue of perl or setf of lisp in python? http://stackoverflow.com/questions/11748780/is-it-possible-something-like-lvalue-of-perl-or-setf-of-lisp-in-python There are however two special cases in the Python syntax # Slice assignment a 1 2 3 4 a 0 3 98 99 # a will become 98 99 3 4 #..
http://stackoverflow.com/questions/11881165/slice-pandas-dataframe-by-row Pandas DataFrame by Row I am working with survey data loaded..
postgresql: out of shared memory? http://stackoverflow.com/questions/3132533/postgresql-out-of-shared-memory
How can memoization be applied to this algorithm? http://stackoverflow.com/questions/3220625/how-can-memoization-be-applied-to-this-algorithm the algorithm to further increase any possible speed class Slice __slots__ 'prefix' 'root' 'suffix' def __init__ self prefix.. min a_size b_size 0 1 for a_addr in range a_size size 1 # Slice a at address and end. a_term a_addr size a_root a a_addr a_term.. a a_addr a_term for b_addr in range b_size size 1 # Slice b at address and end. b_term b_addr size b_root b b_addr b_term..
http://stackoverflow.com/questions/3932582/slice-notation-in-scala notation in scala Is there something similar to slice notation.. import collection.IterableLike scala implicit def pythonicSlice A Repr coll IterableLike A Repr new def apply subrange Int Int.. Int Int Repr coll.slice subrange._1 subrange._2 pythonicSlice A Repr coll scala.collection.IterableLike A Repr java.lang.Object..
“Slicing” in Python Expressions documentation http://stackoverflow.com/questions/752602/slicing-in-python-expressions-documentation __main__.TestGetitem object at 0xb7e9bc4c Slice example t 1 2 type 'slice' slice 1 2 None t 1 'this' t type..
http://stackoverflow.com/questions/7677275/list-assignment-with it comes to speed slice assignment is slower. See Python Slice Assignment Memory Usage for more information about its memory..
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