def cast(self, d):
"""
Cast a single value to a :class:`decimal.Decimal`.
:returns: :class:`decimal.Decimal` or :code:`None`.
:raises: :exc:`.CastError`
"""
if isinstance(d, Decimal) or d is None:
return d
elif isinstance(d, int):
return Decimal(d)
elif isinstance(d, float):
raise CastError(
'Can not convert float to Decimal. Convert data to string first!'
)
elif isinstance(d, six.string_types):
d = d.strip()
d = d.strip('%')
for symbol in CURRENCY_SYMBOLS:
d = d.strip(symbol)
if d.lower() in self.null_values:
return None
try:
return parse_decimal(d, self._locale)
except:
raise CastError('Can not parse value "%s" as Decimal.' % d)
def cast(self, d):
"""
Cast a single value to :class:`datetime.timedelta`.
:param d:
A value to cast.
:returns:
:class:`datetime.timedelta` or :code:`None`
"""
if isinstance(d, datetime.timedelta) or d is None:
return d
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as timedelta.' % d)
seconds = pytimeparse.parse(d)
if seconds is None:
raise CastError('Can not parse value "%s" to as timedelta.' % d)
return datetime.timedelta(seconds=seconds)
def cast(self, d):
"""
Cast a single value to a :class:`decimal.Decimal`.
:returns: :class:`decimal.Decimal` or :code:`None`.
:raises: :exc:`.CastError`
"""
if isinstance(d, Decimal) or d is None:
return d
if isinstance(d, six.string_types):
d = d.replace(',', '').strip()
if d.lower() in self.null_values:
return None
if isinstance(d, float):
raise CastError(
'Can not convert float to Decimal for NumberColumn. Convert data to string first!'
)
try:
return Decimal(d)
except InvalidOperation:
raise CastError(
'Can not convert value "%s" to Decimal for NumberColumn.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`decimal.Decimal`.
:returns:
:class:`decimal.Decimal` or :code:`None`.
"""
if isinstance(d, Decimal) or d is None:
return d
elif type(d) is int:
return Decimal(d)
elif type(d) is float:
return Decimal(repr(d))
elif isinstance(d, six.string_types):
d = d.strip()
d = d.strip('%')
for symbol in CURRENCY_SYMBOLS:
d = d.strip(symbol)
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as Decimal.' % d)
try:
return parse_decimal(d, self.locale)
except:
pass
raise CastError('Can not parse value "%s" as Decimal.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`datetime.date`.
:param date_format:
An optional :func:`datetime.strptime` format string for parsing
datetimes in this column.
:returns:
:class:`datetime.date` or :code:`None`.
"""
if type(d) is date or d is None:
return d
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as date.' % d)
if self.date_format:
try:
dt = datetime.strptime(d, self.date_format)
except:
raise CastError('Value "%s" does not match date format.' % d)
return dt.date()
value, ctx = self.parser.parseDT(d, sourceTime=ZERO_DT)
if ctx.hasDate and not ctx.hasTime:
return value.date()
raise CastError('Can not parse value "%s" as date.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`decimal.Decimal`.
:returns:
:class:`decimal.Decimal` or :code:`None`.
"""
if isinstance(d, Decimal) or d is None:
return d
t = type(d)
if t is int:
return Decimal(d)
elif six.PY2 and t is long: # noqa: F821
return Decimal(d)
elif t is float:
return Decimal(repr(d))
elif d is False:
return Decimal(0)
elif d is True:
return Decimal(1)
elif not isinstance(d, six.string_types):
raise CastError('Can not parse value "%s" as Decimal.' % d)
d = d.strip()
if d.lower() in self.null_values:
return None
d = d.strip('%')
if len(d) > 0 and d[0] == '-':
d = d[1:]
sign = NEGATIVE
else:
sign = POSITIVE
for symbol in self.currency_symbols:
d = d.strip(symbol)
d = d.replace(self.group_symbol, '')
d = d.replace(self.decimal_symbol, '.')
try:
return Decimal(d) * sign
# The Decimal class will return an InvalidOperation exception on most Python implementations,
# but PyPy3 may return a ValueError if the string is not translatable to ASCII
except (InvalidOperation, ValueError):
pass
raise CastError('Can not parse value "%s" as Decimal.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`datetime.datetime`.
:param datetime_format:
An optional :func:`datetime.strptime` format string for parsing
datetimes in this column.
:returns:
:class:`datetime.datetime` or :code:`None`.
"""
if isinstance(d, datetime.datetime) or d is None:
return d
elif isinstance(d, datetime.date):
return datetime.datetime.combine(d, datetime.time(0, 0, 0))
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as datetime.' % d)
if self.datetime_format:
try:
return datetime.datetime.strptime(d, self.datetime_format)
except:
raise CastError('Value "%s" does not match date format.' % d)
try:
(_, _, _, _,
matched_text), = self._parser.nlp(d, sourceTime=self._source_time)
except:
matched_text = None
else:
value, ctx = self._parser.parseDT(d,
sourceTime=self._source_time,
tzinfo=self.timezone)
if matched_text == d and ctx.hasDate and ctx.hasTime:
return value
elif matched_text == d and ctx.hasDate and not ctx.hasTime:
return datetime.datetime.combine(value.date(),
datetime.time.min)
try:
dt = isodate.parse_datetime(d)
return dt
except:
pass
raise CastError('Can not parse value "%s" as datetime.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`decimal.Decimal`.
:returns:
:class:`decimal.Decimal` or :code:`None`.
"""
if isinstance(d, Decimal) or d is None:
return d
t = type(d)
if t is int:
return Decimal(d)
elif six.PY2 and t is long:
return Decimal(d)
elif t is float:
return Decimal(repr(d))
elif d is False:
return Decimal(0)
elif d is True:
return Decimal(1)
elif not isinstance(d, six.string_types):
raise CastError('Can not parse value "%s" as Decimal.' % d)
d = d.strip()
if d.lower() in self.null_values:
return None
d = d.strip('%')
if len(d) > 0 and d[0] == '-':
d = d[1:]
sign = NEGATIVE
else:
sign = POSITIVE
for symbol in self.currency_symbols:
d = d.strip(symbol)
d = d.replace(self.group_symbol, '')
d = d.replace(self.decimal_symbol, '.')
try:
return Decimal(d) * sign
except InvalidOperation:
pass
raise CastError('Can not parse value "%s" as Decimal.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`datetime.date`.
:param date_format:
An optional :func:`datetime.strptime` format string for parsing
datetimes in this column.
:returns:
:class:`datetime.date` or :code:`None`.
"""
if type(d) is datetime.date or d is None:
return d
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as date.' % d)
if self.date_format:
try:
dt = datetime.datetime.strptime(d, self.date_format)
except:
raise CastError('Value "%s" does not match date format.' % d)
return dt.date()
zero = datetime.datetime.combine(datetime.date.min, datetime.time.min)
value, status = self.parser.parseDT(d, sourceTime=zero)
if status == 1:
if value.time() != datetime.time.min:
raise CastError('Value "%s" is datetime, not date.' % d)
return value.date()
try:
dt = isodate.parse_date(d)
try:
dt = isodate.parse_datetime(d)
except:
return dt
except:
pass
raise CastError('Can not parse value "%s" as date.' % d)
def cast(self, d):
"""
Cast a single value to :class:`bool`.
:param d: A value to cast.
:returns: :class:`bool` or :code:`None`.
"""
if isinstance(d, bool) or d is None:
return d
if isinstance(d, six.string_types):
d = d.replace(',', '').strip()
d_lower = d.lower()
if d_lower in self.null_values:
return None
if d_lower in self.true_values:
return True
if d_lower in self.false_values:
return False
raise CastError('Can not convert value %s to bool for BooleanColumn.' %
d)
def cast(self, d):
"""
Cast a single value to a :class:`datetime.datetime`.
:param date_format:
An optional :func:`datetime.strptime` format string for parsing
datetimes in this column.
:returns:
:class:`datetime.datetime` or :code:`None`.
"""
if isinstance(d, datetime.datetime) or d is None:
return d
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
if self.datetime_format:
return datetime.datetime.strptime(d, self.datetime_format)
value, status = self._parser.parseDT(d,
sourceTime=self._source_time,
tzinfo=self.timezone)
if status != 3:
raise CastError('Can not parse value "%s" to as datetime.' % d)
return value
def cast(self, d):
"""
Cast a single value to :class:`bool`.
:param d: A value to cast.
:returns: :class:`bool` or :code:`None`.
"""
if d is None:
return d
elif type(d) is bool and type(d) is not int:
return d
elif type(d) is int or isinstance(d, Decimal):
if d == 1:
return True
elif d == 0:
return False
elif isinstance(d, six.string_types):
d = d.replace(',', '').strip()
d_lower = d.lower()
if d_lower in self.null_values:
return None
elif d_lower in self.true_values:
return True
elif d_lower in self.false_values:
return False
raise CastError('Can not convert value %s to bool.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`datetime.date`.
If both `date_format` and `locale` have been specified
in the `agate.Date` instance, the `cast()` function
is not thread-safe.
:returns:
:class:`datetime.date` or :code:`None`.
"""
if type(d) is date or d is None:
return d
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as date.' % d)
if self.date_format:
orig_locale = None
if self.locale:
orig_locale = locale.getlocale(locale.LC_TIME)
locale.setlocale(locale.LC_TIME, (self.locale, 'UTF-8'))
try:
dt = datetime.strptime(d, self.date_format)
except (ValueError, TypeError):
raise CastError('Value "%s" does not match date format.' % d)
finally:
if orig_locale:
locale.setlocale(locale.LC_TIME, orig_locale)
return dt.date()
try:
(value, ctx, _, _,
matched_text), = self._parser.nlp(d, sourceTime=ZERO_DT)
except (TypeError, ValueError, OverflowError):
raise CastError('Value "%s" does not match date format.' % d)
else:
if matched_text == d and ctx.hasDate and not ctx.hasTime:
return value.date()
raise CastError('Can not parse value "%s" as date.' % d)
def cast(self, d):
"""
Cast a single value to :code:`None`.
:param d:
A value to cast.
:returns:
:code:`None`
"""
if d is None:
return d
if self.cast_nulls and isinstance(d, six.string_types):
if d.strip().lower() in self.null_values:
return None
raise CastError('Can not parse value "%s" as Null.' % d)
def cast(self, d):
if d is None:
return d
if re.match(r"^(?:[01]\d|2[0-3]|\d):[0-5]\d$", str(d)):
return Text().cast(d)
raise CastError('Can not parse value "%s" as time.' % d)
def cast(self, d):
"""
Cast a single value to a :class:`datetime.datetime`.
If both `date_format` and `locale` have been specified
in the `agate.DateTime` instance, the `cast()` function
is not thread-safe.
:returns:
:class:`datetime.datetime` or :code:`None`.
"""
if isinstance(d, datetime.datetime) or d is None:
return d
elif isinstance(d, datetime.date):
return datetime.datetime.combine(d, datetime.time(0, 0, 0))
elif isinstance(d, six.string_types):
d = d.strip()
if d.lower() in self.null_values:
return None
else:
raise CastError('Can not parse value "%s" as datetime.' % d)
if self.datetime_format:
orig_locale = None
if self.locale:
orig_locale = locale.getlocale(locale.LC_TIME)
locale.setlocale(locale.LC_TIME, (self.locale, 'UTF-8'))
try:
dt = datetime.datetime.strptime(d, self.datetime_format)
except (ValueError, TypeError):
raise CastError('Value "%s" does not match date format.' % d)
finally:
if orig_locale:
locale.setlocale(locale.LC_TIME, orig_locale)
return dt
try:
(_, _, _, _,
matched_text), = self._parser.nlp(d, sourceTime=self._source_time)
except Exception:
matched_text = None
else:
value, ctx = self._parser.parseDT(d,
sourceTime=self._source_time,
tzinfo=self.timezone)
if matched_text == d and ctx.hasDate and ctx.hasTime:
return value
elif matched_text == d and ctx.hasDate and not ctx.hasTime:
return datetime.datetime.combine(value.date(),
datetime.time.min)
try:
dt = isodate.parse_datetime(d)
return dt
except Exception:
pass
raise CastError('Can not parse value "%s" as datetime.' % d)
def cast(self, d):
if d is None:
return d
if is_valid_siret(d) or is_valid_siren(d):
return Text().cast(d)
raise CastError('Can not parse value "%s" as a SIREN or SIRET.' % d)
def __init__(self,
rows,
column_names=None,
column_types=None,
row_names=None,
_is_fork=False):
if isinstance(rows, six.string_types):
raise ValueError(
'When created directly, the first argument to Table must be a sequence of rows. Did you want agate.Table.from_csv?'
)
# Validate column names
if column_names:
final_column_names = []
for i, column_name in enumerate(column_names):
if not column_name:
new_column_name = utils.letter_name(i)
warn_unnamed_column(i, new_column_name)
elif isinstance(column_name, six.string_types):
new_column_name = column_name
else:
raise ValueError('Column names must be strings or None.')
final_column_name = new_column_name
duplicates = 0
while final_column_name in final_column_names:
final_column_name = new_column_name + '_' + str(
duplicates + 2)
duplicates += 1
if duplicates > 0:
warn_duplicate_column(new_column_name, final_column_name)
final_column_names.append(final_column_name)
self._column_names = tuple(final_column_names)
elif rows:
self._column_names = tuple(
utils.letter_name(i) for i in range(len(rows[0])))
warnings.warn(
'Column names not specified. "%s" will be used as names.' %
str(self._column_names),
RuntimeWarning,
stacklevel=2)
else:
self._column_names = tuple()
len_column_names = len(self._column_names)
# Validate column_types
if column_types is None:
column_types = TypeTester()
elif isinstance(column_types, dict):
for v in column_types.values():
if not isinstance(v, DataType):
raise ValueError(
'Column types must be instances of DataType.')
column_types = TypeTester(force=column_types)
elif not isinstance(column_types, TypeTester):
for column_type in column_types:
if not isinstance(column_type, DataType):
raise ValueError(
'Column types must be instances of DataType.')
if isinstance(column_types, TypeTester):
self._column_types = column_types.run(rows, self._column_names)
else:
self._column_types = tuple(column_types)
if len_column_names != len(self._column_types):
raise ValueError(
'column_names and column_types must be the same length.')
if not _is_fork:
new_rows = []
cast_funcs = [c.cast for c in self._column_types]
for i, row in enumerate(rows):
len_row = len(row)
if len_row > len_column_names:
raise ValueError(
'Row %i has %i values, but Table only has %i columns.'
% (i, len_row, len_column_names))
elif len(row) < len_column_names:
row = chain(row, [None] * (len_column_names - len_row))
row_values = []
for j, d in enumerate(row):
try:
row_values.append(cast_funcs[j](d))
except CastError as e:
raise CastError(
str(e) + ' Error at row %s column %s.' %
(i, self._column_names[j]))
new_rows.append(Row(row_values, self._column_names))
else:
new_rows = rows
if row_names:
computed_row_names = []
if isinstance(row_names, six.string_types):
for row in new_rows:
name = row[row_names]
computed_row_names.append(name)
elif hasattr(row_names, '__call__'):
for row in new_rows:
name = row_names(row)
computed_row_names.append(name)
elif utils.issequence(row_names):
computed_row_names = row_names
else:
raise ValueError(
'row_names must be a column name, function or sequence')
for row_name in computed_row_names:
if type(row_name) is int:
raise ValueError(
'Row names cannot be of type int. Use Decimal for numbered row names.'
)
self._row_names = tuple(computed_row_names)
else:
self._row_names = None
self._rows = MappedSequence(new_rows, self._row_names)
# Build columns
new_columns = []
for i in range(len_column_names):
name = self._column_names[i]
data_type = self._column_types[i]
column = Column(i,
name,
data_type,
self._rows,
row_names=self._row_names)
new_columns.append(column)
self._columns = MappedSequence(new_columns, self._column_names)
