George Sakkis ? ?: > On Jan 24, 2:24 am, auditory <[EMAIL PROTECTED]> wrote: > >> I am a newbie here >> >> I am trying to read "space separated floating point data" from file >> >> I read about csv module by searching this group, >> but I couldn't read space separated values with csv. >> (which may be matter of course..) >> >> I also read about numpy.fromfile(file, sep=' ') which i can use. >> but on my machine(ubuntu linux) numpy is unknown module, >> which I didn't install by myself. >> >> While trying to install numpy accroding to its homepage. >> (http://numpy.scipy.org/numpydoc/numdoc.htm). >> i am quite confused. >> >> it's talking about the Numerical Python, >> and it says to test whether it is installed or not, >> try import Numeric instead of numpy. >> >> I got Nurmeric modules and >> as a matter of fact i got a file named '_numpy.so' in lib directory. >> >> I can import _numpy but _numpy does not have 'fromfile' method >> >> My question is: >> 1. Do i need to install numpy module? >> 2. Then Is it different from Numeric module? >> 3. Then where can i get it? >> >> 4. Or what is general way to read 'space separated values' from file? >> >> Thanks in advance. > > If *all* you need is to read a space-separated file with floating point > values, installing numpy (or Numeric or numarray..) is an overkill; you > can do it in one line in pure Python: > > matrix = [map(float, line.split()) for line in > open('my_space_separated_file.txt')] > > This stores the values as a list of lists, each list corresponding to a > row in the file. Depending on what you plan to do next with these > numbers, this may or may not be the best way to go about it, but since > you only mentioned the file reading part, we can't assume much. > > George > Thanks a lot for your 'elegant' suggestion. As a next step i wish to do some math with matrix and produce a vector and write it on a file. (in fact math is just averaging now)
I hope i can do this with a little more efforts. -- http://mail.python.org/mailman/listinfo/python-list