unpack

I have a project which builds a war (no problem). And, that war needs to be packaged with a few shell scripts. Because that war contains properties files that vary from site-to-site, we can't simply install the war as is, but munge the properties files in it. That's what the shell scripts do. I'd like to package my war in my assembly as a unpacked war. I see <unpacked> in the Assembly Descriptor, but I haven't been able to get that to work. Here's my first bin.xml where I just packed the war as is. This works fine: <assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly

Consider this short example: $a = pack("d",255); print length($a)."\n"; # Prints 8 $aa = pack("ddddd", 255,123,0,45,123); print length($aa)."\n"; # Prints 40 @unparray = unpack("d "x5, $aa); print scalar(@unparray)."\n"; # Prints 5 print length($unparray[0])."\n" # Prints 3 printf "%d\n", $unparray[0] ' # Prints 255 # As a one-liner: # perl -e '$a = pack("d",255); print length($a)."\n"; $aa = pack("dd", 255,123,0,45,123); print length($aa)."\n"; @unparray = unpack("d "x5, $aa); print scalar(@unparray)."\n"; print length($unparray[0])."\n"; printf "%d\n", $unparray[0] ' Now, I'd expect a double

I want to overload the * operator in python. In C++, you can overload the dereference operator, so that you can create a class with a custom way to respond to *alpha . Part of this question is that I don't know exactly, and I mean EXACTLY, what the * operator (unpacking operator as I call it) does. So how can I overload it, or emulate the overloading of it. Eventually I want to be able to do: *alpha with a custom response and return value. EDIT: I found the solution thanks to Joe Kington's comment. As *alpha unpacks according to __iter__ , so I defined a simple class that can be inherited from

Say, I have a dic like this my_dictionary = {'a':1,'c':5,'b':20,'d':7} Now, I want to do this with my dic: if my_dictionary['a'] == 1 and my_dictionary['d'] == 7: print my_dictionary['c'] This looks ridiculous because I am typing my_dictionary 3 times! So is there any syntax which would allow me to do something like this: within my_dictionary: if a == 1 and d == 7: print c This would actually work if I didn't have anything more (in this case b) in my dic: def f(a,d,c): if a == 1 and d == 7: print c f(**my_dictionary) You can change your function to def f(a,d,c,**args): if a == 1 and d == 7:

I have a 12 bit packed image from a GigE camera. It is a little-endian file and each 3 bytes hold 2 12-bit pixels. I am trying to read this image using python and I tried something like this: import bitstring import numpy with open('12bitpacked1.bin', 'rb') as f: data = f.read() ii=numpy.zeros(2*len(data)/3) ic = 0 for oo in range(0,len(data)/3): aa = bitstring.Bits(bytes=data[oo:oo+3], length=24) ii[ic],ii[ic+1] = aa.unpack('uint:12,uint:12') ic=ic+2 b = numpy.reshape(ii,(484,644)) In short: I read 3 bytes, convert them to bits and then unpack them as two 12-bit integers. The result is,

I'm trying to figure out what is the pythonic way to unpack an iterator inside of a list. For example: my_iterator = zip([1, 2, 3, 4], [1, 2, 3, 4]) I have come with the following ways to unpack my iterator inside of a list: 1) my_list = [*my_iterator] 2) my_list = [e for e in my_iterator] 3) my_list = list(my_iterator) No 1) is my favorite way to do it since is less code, but I'm wondering if this is also the pythonic way. Or maybe there is another way to achieve this besides those 3 which is the pythonic way? This might be a repeat of Fastest way to convert an iterator to a list , but your

I want to unpack a binary string into into an array by a weird sequence of 8-8-8-7 bits. I could easily do something like this, for a normal 8-8-8-8 sequence: $b=unpack('C*',$data); for ($i=0,$count=sizeof($b); $i < $count; $i+=4) { $out[]=array($b[$i+1],$b[$i+2],$b[$i+3],$b[$i+4]); } That would give me a 2D array of bytes, grouped by 4. But as the fourth being 7 bits, I just can't think of anything appropriate. Have you got some ideas? Not sure if I completely understand, but if you have packed data in an unaligned / unpadded format, you will want to use some sort of bitstream. Here's a