Reading to an array from a text file is done with the help of the following syntax:
filename = 'test.txt' data = loadtxt(filename)
Due to the fact that each row in an array must have the same length, each row in the text file must have the same number of elements. Similar to savetxt, the default values are float and the delimiter is a space. These can be set using the parameters dtype and delimiter. Another useful parameter is comments, which can be used to mark what symbol is used for comments in the data file. An example of using the formatting parameters is as follows:
data = loadtxt('test.txt',delimiter=';') # data separated by semicolons
# read to integer type, comments in file begin with a hash character
data = loadtxt('test.txt',dtype=int,comments='#')