Why can't I call read() twice on an open file?

Question

For an exercise I\'m doing, I\'m trying to read the contents of a given file twice using the read() method. Strangely, when I call it the second time, it doesn\

Answer 1

yeah, as above...

i'll write just an example:

>>> a = open('file.txt')
>>> a.read()
#output
>>> a.seek(0)
>>> a.read()
#same output