I know how to setup an empty list and loop thru something... appending
to the list on each loop... how does this work with dicts?
I'm looping thru a list of files and I want to put the file's name and
its sha hash into a dict on each loop.
Many thanks,
rbt 5 1892
rbt wrote: I know how to setup an empty list and loop thru something... appending to the list on each loop... how does this work with dicts?
I'm looping thru a list of files and I want to put the file's name and its sha hash into a dict on each loop.
Whereas with a list you would call "append" in the loop, with a
dictionary you simply use an indexed-assignment type of access:
mydict = {}
for filename in some_list_of_fi lenames:
hash = sha.sha(open(fi lename).read()) .hexdigest() # or whatever
mydict[filename] = hash
-Peter
rbt wrote: I know how to setup an empty list and loop thru something... appending to the list on each loop... how does this work with dicts?
I'm looping thru a list of files and I want to put the file's name and its sha hash into a dict on each loop.
Like so:
d = {}
for filename in files:
d[sha_func(filena me)] = filename
Or like so:
d = dict([(sha_func(filen ame), filename) for filename in files])
--
Brian Beck
Adventurer of the First Order
On Friday 20 May 2005 01:04 pm, rbt wrote: I know how to setup an empty list and loop thru something... appending to the list on each loop... how does this work with dicts?
I'm looping thru a list of files and I want to put the file's name and its sha hash into a dict on each loop.
Many thanks,
rbt
Simple assignment.
adict[filename] = an_sha_hash
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095 http://www.jamesstroud.com/
rbt <rb*@athop1.ath .vt.edu> wrote: I know how to setup an empty list and loop thru something... appending to the list on each loop... how does this work with dicts?
I'm looping thru a list of files and I want to put the file's name and its sha hash into a dict on each loop.
You just assign values to keys. If the key doesn't exist, it's
created automagically. You want something like this:
shaDict = {}
for fileName in fileNameList:
hash = generateShaHash (fileName)
shaDict[hash] = fileName
Peter Hansen wrote: rbt wrote:
I know how to setup an empty list and loop thru something... appending to the list on each loop... how does this work with dicts?
I'm looping thru a list of files and I want to put the file's name and its sha hash into a dict on each loop.
Whereas with a list you would call "append" in the loop, with a dictionary you simply use an indexed-assignment type of access:
mydict = {} for filename in some_list_of_fi lenames: hash = sha.sha(open(fi lename).read()) .hexdigest() # or whatever mydict[filename] = hash
-Peter
Thanks guys... that works great. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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