On 12. jan. 2011, at 16.40, dstaley wrote: > > > Zachary Pincus-2 wrote: >> >>> Is it possible to use a variable in an array name? I am looping >>> through a >>> bunch of calculations, and need to have each array as a separate >>> entity. >>> I'm pretty new to python and numpy, so forgive my ignorance. I'm >>> sure there >>> is a simple answer, but I can't seem to find it. >>> >>> let's say i have a variable 'i': >>> >>> i = 5 >>> >>> I would like my array to have the name array5 >>> >>> I know how I could do this manually, but not in a loop where i is >>> redefined >>> several times. >> >> There are ways to do this, but what you likely actually want is just >> to put several arrays in a python list and then index into the list, >> instead of constructing numbered names. >> >> e.g.: >> >> array_list = [] >> >> for whatever: >> array_list.append(numpy.array(whatever)) >> >> for array in array_list: >> do_something(array) >> >> given_array = array_list[i] >> _______________________________________________ >> NumPy-Discussion mailing list >> NumPy-Discussion@scipy.org >> http://mail.scipy.org/mailman/listinfo/numpy-discussion >> >> > > > Thank you very much for the prompt response. I have already done what you > have suggested, but there are a few cases where I do need to have an array > named with a variable (looping through large numbers of unrelated files and > calculations that need to be dumped into different analyses). It would be > extraordinarily helpful if someone could post a solution to this problem, > regardless of inefficiency of the method. Thanks a ton for any additional > help. > -- This may be obvious, but I sometimes forget myself: have you tried python dicts? >>> from numpy import * >>> a = linspace(0,10) >>> b = a.copy() >>> d = {'array1':a, 'array2':b} >>> for key in d: ... dosomething(d[key]) That way, you can assign a name / key for each array variable, and use this name for file names, or whatever you need names for.
Cheers Paul. _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
