An interface to read data files#

sage.interfaces.read_data.read_data(f, t)[source]#

Read data from file ‘f’ and class ‘t’ (one element per line), and returns a list of elements.

INPUT:

‘f’ – a file name
‘t’ – a class (objects will be coerced to that class)

OUTPUT:

a list of elements of class ‘t’

EXAMPLES:

Sage

sage: indata = tmp_filename()
sage: f = open(indata, "w")
sage: _ = f.write("17\n42\n")
sage: f.close()
sage: l = read_data(indata, ZZ); l
[17, 42]
sage: f = open(indata, "w")
sage: _ = f.write("1.234\n5.678\n")
sage: f.close()
sage: l = read_data(indata, RealField(17)); l
[1.234, 5.678]

Python

>>> from sage.all import *
>>> indata = tmp_filename()
>>> f = open(indata, "w")
>>> _ = f.write("17\n42\n")
>>> f.close()
>>> l = read_data(indata, ZZ); l
[17, 42]
>>> f = open(indata, "w")
>>> _ = f.write("1.234\n5.678\n")
>>> f.close()
>>> l = read_data(indata, RealField(Integer(17))); l
[1.234, 5.678]