Please don't leave new questions in an existing thread, and
especially without changing subject line. Compose a new message
with meaningful subject line.
ishish <ish...@domhain.de> Wrote in message:
> Hi,
>
> This might sound weird, but is there a limit how many dictionaries a
> can create/use in a single script?
No, unless you run out of RAM.
>
> My reason for asking is I split a 2-column-csv (phone#, ref#) file into
> a dict and am trying to put duplicated phone numbers with different ref
> numbers into new dictionaries. The script deducts the duplicated 46
> numbers but it only creates batch1.csv. Since I obviously can't see the
> wood for the trees here, can someone pls punch me into the right
> direction....
> ...(No has_key is fine, its python 2.7)
But has_key is deprecated, and you're using it wrong anyway.
>
> f = open("file.csv", 'r')
>
> myDict = {}
> Batch1 = {}
> Batch2 = {}
> Batch3 = {}
>
> for line in f:
> if line.startswith('Number' ):
> print "First line ignored..."
> else:
> k, v = line.split(',')
> myDict[k] = v
> f.close()
>
> for k, v in myDict.items():
> if Batch1.has_key(k):
> if k in Batch2.has_key(k):
I'm surprised this doesn't throw an exception. has_key returns a
bool, and in isn't meaningful on a bool. Just use
if k in Batch2:
> Batch3[k] = v
> else:
> Batch2[k] = v
> else:
> Batch1[k] = v
>
> for k, v in Batch1.items():
> newLine = "%s,%s" % (k, v)
> with open("batch1.csv", "a") as f:
This is unusual, and a performance killer, to repeatedly open
the file. But you may have some reason.
> f.write(newLine)
There's no newline there, so your csv is going to be one long
line. You probably want newLine+'\n' inside those
parens.
>
> for k, v in Batch2.items():
> newLine = "%s,%s" % (k, v)
> with open("batch2.csv", "a") as f:
> f.write(newLine)
>
> for k, v in Batch3.items():
> newLine = "%s,%s" % (k, v)
> with open("batch3.csv", "a") as f:
> f.write(newLine)
>
--
DaveA
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