The best way to deal with large files in Python style

<span style="font-family:Arial Black;font-size:12px;color:#000099;">with open(...) as f:
for line in f:
<do something with line></span>

The

with

statement handles opening and closing the file, including if an exception is raised in the inner block. The

for line in f

treats the file object

f

as an iterable, which automatically uses buffered IO and memory management so you don't have to worry about large files.

Click
here for origin.

Another alternative: by making use of
yield.<span style="font-family:Arial Black;font-size:12px;">def read_file(fpath):
BLOCK_SIZE = 1024with open(fpath, 'rb') as f:
while True:
block = f.read(BLOCK_SIZE)
if block:
yield block
else:
return</span>Click

here for origin.