Hi All,
i'm tring to learn how to use threads in python to save a list of object. i'm
starting from this code :
#####
import threading
import urllib
from tempfile import NamedTemporaryFile
singlelock = threading.Lock()
class download(threading.Thread):
def __init__(self, sitecode, lista):
threading.Thread.__init__(self)
self.sitecode = sitecode
self.status = -1
def run(self):
url =
"http://waterdata.usgs.gov/nwis/monthly?referred_module=sw&site_no=";
url += self.sitecode
url +=
"&PARAmeter_cd=00060&partial_periods=on&format=rdb&submitted_form=parameter_selection_list"
tmp = NamedTemporaryFile(delete=False)
urllib.urlretrieve(url, tmp.name)
print "loaded Monthly data for sitecode : ", self.sitecode
lista.append(tmp.name)
print lista
sitecodelist = ["01046500", "01018500", "01010500", "01034500", "01059000",
"01066000", "01100000"]
lista = []
for k in sitecodelist:
get_data = download(k,lista)
get_data.start()
#####
it just print out the list generated during the thread execution, while i'm
tring to return it.
Trying to read the documentation, i'm looking on how to use " threading.Lock()
" and its methods "acquire() and release()" that seems to be the solution to my
issue
... but i'm really far to understand how to implement it in my example code.
thanks so much for any hints!_______________________________________________
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