def read(self, nrows=None):
if (nrows is None) and (self.chunksize is not None):
nrows = self.chunksize
elif nrows is None:
nrows = self.row_count
if len(self._column_types) == 0:
self.close()
raise EmptyDataError("No columns to parse from file")
if self._current_row_in_file_index >= self.row_count:
return None
m = self.row_count - self._current_row_in_file_index
if nrows > m:
nrows = m
nd = self._column_types.count(b"d")
ns = self._column_types.count(b"s")
self._string_chunk = np.empty((ns, nrows), dtype=object)
self._byte_chunk = np.zeros((nd, 8 * nrows), dtype=np.uint8)
self._current_row_in_chunk_index = 0
p = Parser(self)
p.read(nrows)
rslt = self._chunk_to_dataframe()
if self.index is not None:
rslt = rslt.set_index(self.index)
return rslt
def read(self, nrows=None):
if (nrows is None) and (self.chunksize is not None):
nrows = self.chunksize
elif nrows is None:
nrows = self.row_count
if self._current_row_in_file_index >= self.row_count:
return None
m = self.row_count - self._current_row_in_file_index
if nrows > m:
nrows = m
nd = (self.column_types == b'd').sum()
ns = (self.column_types == b's').sum()
self._string_chunk = np.empty((ns, nrows), dtype=np.object)
self._byte_chunk = np.empty((nd, 8 * nrows), dtype=np.uint8)
self._current_row_in_chunk_index = 0
p = Parser(self)
p.read(nrows)
rslt = self._chunk_to_dataframe()
if self.index is not None:
rslt = rslt.set_index(self.index)
return rslt
def read(self, nrows=None):
if (nrows is None) and (self.chunksize is not None):
nrows = self.chunksize
elif nrows is None:
nrows = self.row_count
if len(self.column_types) == 0:
self.close()
raise EmptyDataError("No columns to parse from file")
if self._current_row_in_file_index >= self.row_count:
return None
m = self.row_count - self._current_row_in_file_index
if nrows > m:
nrows = m
nd = (self.column_types == b'd').sum()
ns = (self.column_types == b's').sum()
self._string_chunk = np.empty((ns, nrows), dtype=np.object)
self._byte_chunk = np.empty((nd, 8 * nrows), dtype=np.uint8)
self._current_row_in_chunk_index = 0
p = Parser(self)
p.read(nrows)
rslt = self._chunk_to_dataframe()
if self.index is not None:
rslt = rslt.set_index(self.index)
return rslt
