CODEWITHSUNDEEP
pythontimedelta
JLP Wisc.
JLP Wisc.

Reputation: 41

How do I get days between dates

I need to remove files that are older than 14 days from a directory that stores our backups. I can get the time of an individual file by using something like this: 

start = (os.path.getmtime(join(dirpath, name))/3600*24)

But I'm getting confused with how I use timedelta to find the difference between this and the current date.

I'd like to use something like this: 

d = (datetime.timedelta(time.now() - os.path.getmtime(join(dirpath, dirname))

but I'm just not getting it. I'm on my own here, and I'd love some help.

Upvotes: 4

Views: 1378

Answers (4)

Steven Rumbalski
Steven Rumbalski

Reputation: 45542

aix has a perfectly good answer using the time module. Here's an answer that uses datetime.

from datetime import *
maxdays = timedelta(14)
mtime =datetime.fromtimestamp(os.path.getmtime(filename))
if mtime - datetime.now() > maxdays:
    print filename, 'older than 14 days'

Upvotes: 0

Dan D.
Dan D.

Reputation: 74645

a timedelta is the result of subtracting a datetime from another datetime. in this example i show that my /bin/bash is 1168 days and some older than my /dev/null:

>>> import datetime
>>> import os.path
>>> datetime.datetime.fromtimestamp(os.path.getmtime("/dev/null"))
datetime.datetime(2011, 7, 24, 18, 58, 28, 504962)
>>> datetime.datetime.fromtimestamp(os.path.getmtime("/bin/bash"))
datetime.datetime(2008, 5, 12, 15, 2, 42)
>>> datetime.datetime.fromtimestamp(os.path.getmtime("/dev/null"))-datetime.datetime.fromtimestamp(os.path.getmtime("/bin/bash"))
datetime.timedelta(1168, 14146, 504962)
>>> d = datetime.datetime.fromtimestamp(os.path.getmtime("/dev/null"))-datetime.datetime.fromtimestamp(os.path.getmtime("/bin/bash"))
>>> d.days
1168

Upvotes: 2

Austin Marshall
Austin Marshall

Reputation: 3107

datetime.datetime.now()-datetime.timedelta(days=14)

Something like that?

Upvotes: 0

NPE
NPE

Reputation: 500357

Try:

if time.time() - os.path.getmtime(filename) > 14 * 24 * 3600:
  print 'the file is older than 14 days'

Upvotes: 5

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