On 03/17/2016 09:36 AM, Charles T. Smith wrote:
Yes, your point was to forgo REs despite that they are useful.
I could have thought the search would have been better as:
'release[-.:][Rr]eq'
or something else ... you're in a "defend python at all costs!" mode.
No, I'm in the "don't try to write <language X> in Python" mode, and
"don't use 10lb sledge when 6oz hammer will do" mode:
--------------------------------------------------------
# using `in` and printing line as each is found
real 0m1.703s
user 0m0.184s
sys 0m0.260s
# using `in` and printing lines at the end
real 0m0.217s
user 0m0.112s
sys 0m0.068s
# using 're' and printing lines at the end
real 0m0.608s
user 0m0.516s
sys 0m0.060s
--------------------------------------------------------
As you can see, how you print has a huge impact. Hopefully you also
noticed that using `re` when `in` would do made the script 3 times slower.
--------------------------------------------------------
# using `in` code
import sys
found = []
for fn in sys.argv[1:]:
with open(fn) as fh:
for line in fh:
if 'timezone' in line:
found.append(line)
print ''.join(found)
--------------------------------------------------------
# using `re` code
import sys
import re
found = []
for fn in sys.argv[1:]:
with open(fn) as fh:
for line in fh:
if re.search('timezone', line):
found.append(line)
print ''.join(found)
--------------------------------------------------------
--
~Ethan~
--
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