filehandle

We can iterate over a filehandle. On each iteration we’ll get one line from the file.

import sys

file = sys.argv[0]

with open(file) as fh:
    for row in fh:
        print(row, end="")

Running this program will print itself.

We can also print the filehandle: print(fh), but the output will be:

<_io.TextIOWrapper name='iterable_fh.py' mode='r' encoding='UTF-8'>

not the content of the file.

So the “thing” that the open function returned is iterable, but it is different from the previous 3 types.