python - Mix of scalars, tuples and numpy arrays as string argument -

i using python generate povray rendering code visualization of computed data. need pass lot parameters python strings of povray code. make scrips cleaner. use tuples , arrays directly arguments string formating. this:

sign   = -1 name   = "temp1" nu     = 0.245  boxmin =(0.01,0.01,0.01)  # tuple boxmax =array([0.99,0.99,0.99]) # array povfile.write( ''' isosurface {     function     {  %f*( %f - data3d_%s(x,y,z) )  }     contained_by { box { <%f,%f,%f>,<%f,%f,%f> } } }''' %(  sign, nu, name, *boxmin, *boxmax ) ) 

instead of this:

povfile.write( ''' isosurface {     function     {  %f*( %f - data3d_%s(x,y,z) )  }     contained_by { box { <%f,%f,%f>,<%f,%f,%f> } } }''' %(  sign, nu, name, boxmin[0],boxmin[1],boxmin[2], boxmax[0],boxmax[1],boxmax[2] ) ) 

supposing every element want write in string list (or iterable) - if constituted 1 element - can use workaround based on list flattening.

consider this

flatten_list = lambda tupleoftuples : [element tupl in tupleoftuples element in tupl]  = ['hi',] b = [23,56] c = ['bye',33,35]  "{0} {1} {2} {3} {4} {5}".format(*flatten_list([a,b,c])) 

result

'hi 23 56 bye 33 35' 

you can use smarter algorithms flatten argument list include non-iterable elements (i.e. ones constituted 1 item). (see e.g. this answer).