def _guess(self, parts):
"""Guess at what the URL ought to be"""
messages = []
year = release = geoid = summary_level = tableid = None
for part in parts:
try:
int(str(part)[1])
if part.upper()[0] in ['B', 'C']:
tableid = part
continue
except (IndexError, ValueError, AttributeError):
pass
try:
sub_geoids(part)
geoid = part
continue
except (ValueError, TypeError):
pass
try:
sub_summarylevel(part)
summary_level = part
continue
except (ValueError, KeyError):
pass
try:
if int(part) in [1, 3, 5]:
release = int(part)
continue
except ValueError:
pass
try:
if 2004 < int(part) < 2050:
year = int(part)
continue
except ValueError:
pass
messages.append("Failed to parse '{}' ".format(part))
year = int(year or self.default_year)
release = int(release or self.default_release)
messages += self._test_parts(
[year, release, geoid, summary_level, tableid])
if messages:
raise CensusParsingException(
"Failed to parse census url '{}' : {}".format(
'/'.join(str(e) for e in parts), '; '.join(messages)))
return year, release, geoid, summary_level, tableid
def _test_parts(self, parts, raise_exception = False):
"""Check if the URL is formatted properly"""
year, release, geoid, summary_level, tableid = parts
message = []
if year is None:
message.append("No year")
else:
try:
int(year)
except:
message.append("Bad year {}".format(year))
if not release:
message.append("No release")
else:
try:
assert (int(release) in [1, 3, 5])
except:
message.append("Bad release {}".format(release))
if not geoid:
message.append("No geoid")
else:
try:
sub_geoids(geoid)
except:
message.append("Bad geoid {}".format(geoid))
if not summary_level:
message.append("No summary_level")
else:
try:
sub_summarylevel(summary_level)
except:
message.append("Bad summarylevel {}".format(summary_level))
if not tableid:
message.append("No tableid")
else:
try:
assert(tableid.upper()[0] in ['B','C'])
except:
message.append("Bad tableid {}".format(tableid))
return message
def year(self):
'''Return the year'''
return sub_summarylevel(self.year)
def summary_level(self):
'''Return the sumary level code'''
return sub_summarylevel(self._summary_level)
def summary_level(self):
return sub_summarylevel(self._parts[3])
