On Sun, Nov 11, 2018 at 12:19:36PM +0530, Asad wrote:
> Hi All ,
>
> If I am loading a logfile what should I use from the option 1,2,3
Depends what you want to do. I assume that the log file is formatted
into lines of text, so you probably want to iterate over each line.
with open(filename, 'r') as f:
for line in f:
process(line)
is the best idiom to use for line-by-line iteration. It only reads each
line as needed, not all at once, so it can handle huge files even if the
file is bigger than the memory you have.
> f3 = open ( r"/a/b/c/d/test/test_2814__2018_10_05_12_12_45/logA.log", 'r' )
Don't use raw strings r"..." for pathnames.
> 1) should only iterate over f3
>
> 2) st = f3.read()
Use this if you want to iterate over the file character by character,
after reading the entire file into memory at once.
> 3) st1 = f3.readlines()
Use this if you want to read all the lines into memory at once.
--
Steve
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