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How to read a large file - line by line?
...anceFactor)
p = Pool(numProcesses)
partialSum = p.starmap(ReadFileSegment, zip(startByte, endByte, repeat(fileName))) # startByte is already a list. fileName is made into a same-length list of duplicates values.
globalSum = sum(partialSum)
print(globalSum)
def ReadFileSegment(startByte, endByte, f...
Benchmarking (python vs. c++ using BLAS) and (numpy)
...inux, just type make): http://dl.dropbox.com/u/5453551/blas_call_benchmark.zip
http://dl.dropbox.com/u/5453551/blas_call_benchmark.png
I do not see essentially any difference between the different methods for large matrices, between Numpy, Ctypes and Fortran. (Fortran instead of C++ --- and if thi...
Solving “Who owns the Zebra” programmatically?
....tar.bz2#md5=d58de49c85992493db53fcb59b9a0a45
extract (Linux/Mac/BSD):
$ bzip2 -cd python-constraint-1.2.tar.bz2 | tar xvf -
extract (Windows, with 7zip):
> 7z e python-constraint-1.2.tar.bz2
> 7z e python-constraint-1.2.tar
install:
$ cd python-constraint-1.2
$ python setup.py install
...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...brary.
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
bunzip2 gmp-4.3.2.tar.bz2
tar xvf gmp-4.3.2.tar
cd gmp-4.3.2
./configure --disable-shared --enable-static --prefix=/tmp/gcc
make && make check && make install
MPFR
MPFR is the GNU Multiple-precision floating-p...
Most simple but complete CMake example
...ocal/share/ and something equivalent on windows. I wanted to have a simple zip/tar.gz that you can extract anywhere and run. Therefore resources are loaded relative to the executable.
the basic rule to understand cmake commands is the following syntax:
<function-name>(<arg1> [<arg2&g...
What are “named tuples” in Python?
... __slots__ = ()
def __init__(self, *args):
for slot, arg in zip(self.__slots__, args):
setattr(self, slot, arg)
def __repr__(self):
return type(self).__name__ + repr(tuple(self))
# more direct __iter__ than Sequence's
def __iter__(self):
for na...
How can I improve my paw detection?
...size of a rectangle for each paw and display it
for slice, rect in zip(paw_slices, rects):
dy, dx = slice
rect.set_xy((dx.start, dy.start))
rect.set_width(dx.stop - dx.start + 1)
rect.set_height(dy.stop - dy.start + 1)
rect.set_visi...
What's the difference between equal?, eql?, ===, and ==?
...uals(o)
ops = [:==, :===, :eql?, :equal?]
Hash[ops.map(&:to_s).zip(ops.map {|s| send(s, o) })]
end
end
"a".all_equals "a" # => {"=="=>true, "==="=>true, "eql?"=>true, "equal?"=>false}
== — generic "equality"
At the Object level, == returns true only if obj and othe...
Why is the order in dictionaries and sets arbitrary?
...ctionary in between. That means that d.items() is essentially identical to zip(d.keys(), d.values()). If any items are added to the dictionary however, all bets are off. The order could change completely (if the hash table needed to be resized), though most of the time you'd just find the new item t...
Various ways to remove local Git changes
...en scripting deployment, and you want to clean your code before deploying, zipping or whatever.
Git clean will not touch files, that are already being tracked.
Checkout "dot"
git checkout .
I had actually never seen this notation before reading your post. I'm having a hard time finding document...