On 2014-05-10 02:22, eckhle...@gmail.com wrote:
I'm migrating from Perl to Python and unable to identify the equivalent of key
of key concept. The following codes run well,
import csv
attr = {}
with open('test.txt','rb') as tsvin:
tsvin = csv.reader(tsvin, delimiter='\t')
for row in tsvin:
ID = row[1]
until:
attr[ID]['adm3'] = row[2]
I then try:
attr[ID].adm3 = row[2]
still doesn't work. Some posts suggest using module dict but some do not. I'm a
bit confused now. Any suggestions?
Python doesn't have Perl's autovivication feature. If you want the
value to be a dict then you need to create that dict first:
attr[ID] = {}
attr[ID]['adm3'] = row[2]
You could also have a look at the 'defaultdict' class in the
'collections' module.
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