Created
April 23, 2013 13:36
-
-
Save gka/5443597 to your computer and use it in GitHub Desktop.
Importer for Eurostat TSV files
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/env python | |
import sys | |
from os.path import basename, splitext, dirname | |
from os import rename | |
from glob import glob | |
import csv | |
import dataset | |
def get_float(s): | |
try: | |
return float(s) | |
except: | |
return None | |
def import_tsv(src): | |
tid = splitext(basename(src))[0] | |
c = 0 | |
try: | |
db.query('DELETE FROM %s' % tid) | |
print '(drop) ', | |
except: | |
pass | |
table = db[tid] | |
csv_in = csv.reader(open(src), delimiter='\t') | |
head = map(lambda k: k.strip(), csv_in.next()) | |
dim = map(lambda k: k.strip(), head[0].split(',')) | |
dim[-1], h = dim[-1].split('\\') | |
inserts = [] | |
for row in csv_in: | |
# explode first column | |
rdim = row[0].split(',') | |
for i in range(1, len(row[1:])): | |
data = dict() | |
for d in range(len(dim)): | |
data[dim[d]] = rdim[d] | |
data[h] = head[i].strip() | |
data['value'] = get_float(row[i]) | |
data['value_s'] = row[i].strip() | |
inserts.append(data) | |
if len(inserts) > 25000: | |
table.insert_many(inserts) | |
inserts = [] | |
sys.stdout.write('.') | |
c += 1 | |
if c % 4 == 0: | |
sys.stdout.write(' ') | |
if len(inserts) > 0: | |
table.insert_many(inserts) | |
sys.stdout.write('.') | |
if __name__ == '__main__': | |
if len(sys.argv) == 1: | |
print 'Usage: python import_tsv.py eurostat_tsv_files database ' | |
exit() | |
src = sys.argv[1] | |
if len(sys.argv) > 2: | |
db = sys.argv[2] | |
else: | |
db = 'sqlite:///eurostat.db' | |
db = dataset.connect(db) | |
for fn in glob(src): | |
print splitext(basename(fn))[0] + ' ', | |
import_tsv(fn) | |
rename(fn, dirname(fn) + '/_imported/' + basename(fn)) | |
sys.stdout.write('d\n') |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment