/usr/lib/python3/dist-packages/pyutilib/excel/spreadsheet_xlrd.py is in python3-pyutilib 5.3.5-1.
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#
# PyUtilib: A Python utility library.
# Copyright (c) 2008 Sandia Corporation.
# This software is distributed under the BSD License.
# Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
# the U.S. Government retains certain rights in this software.
# _________________________________________________________________________
"""
A class for interacting with an Excel spreadsheet.
"""
#
# Imports
#
import os
import sys
import xlrd
from pyutilib.excel.base import ExcelSpreadsheet_base
class ExcelSpreadsheet_xlrd(ExcelSpreadsheet_base):
def can_read(self): return True
def can_write(self): return False
def can_calculate(self): return False
def __init__(self, filename=None, worksheets=(1,), default_worksheet=1):
"""
Constructor.
"""
self.wb = None
self.xlsfile = None
self._ws = {}
if filename is not None:
self.open(filename, worksheets, default_worksheet)
def open(self, filename, worksheets=(1,), default_worksheet=1):
"""
Initialize this object from a file.
"""
#
# Set the excel spreadsheet name
#
self.xlsfile = filename
#
# Start the excel spreadsheet
#
self.wb = xlrd.open_workbook(self.xlsfile)
self.worksheets=set(worksheets)
self._ws = {}
for wsid in worksheets:
if type(wsid) is int:
self._ws[wsid] = self.wb.sheet_by_index(wsid-1)
else:
self._ws[wsid] = self.wb.sheet_by_name(wsid)
self.default_worksheet=default_worksheet
def ws(self):
""" The active worksheet """
return self._ws[self.default_worksheet]
def __del__(self):
"""
Close the spreadsheet when deleting this object.
"""
if self is None:
return
self.close()
def close(self):
"""
Close the spreadsheet
"""
if self is None: #pragma:nocover
return
if self._ws is None:
return
self._ws = {}
def activate(self, name):
""" Activate a specific sheet """
if name is None:
return
if not name in self._ws:
raise ValueError("Cannot activate a missing sheet with xlrd")
self.default_worksheet=name
def calc_iterations(self, val=None):
raise ValueError("ExcelSpreadsheet calc_iterations() is not supported with xlrd")
def max_iterations(self, val=None):
raise ValueError("ExcelSpreadsheet max_iterations() is not supported with xlrd")
def calculate(self):
"""
Perform calculations in a spreadsheet
"""
raise ValueError("ExcelSpreadsheet calculate() is not supported with xlrd")
def set_array(self, row, col, val, wsid=None):
"""
Set an array of cells to a given value
"""
raise IOError("Cannot write to ranges with xlrd")
def get_array(self, row, col, row2, col2, wsid=None, raw=False):
"""
Return a range of cells
"""
return self.get_range( (self.ws().Cells(row,col), self.ws().Cells(row2,col2)), wsid, raw)
def set_range(self, rangename, val, wsid=None):
"""
Set a range with a given value (or set of values)
"""
raise IOError("Cannot write to ranges with xlrd")
def get_column(self, colname, wsid=None, raw=False, contiguous=False):
"""
Select the values of a column.
This ignores blank cells at the top and bottom of the column.
If contiguous is False, a list is returned with all cell values
starting from the first non-blank cell until the last non-blank cell.
If contiguous if True, a list is returned with all cell values
starting from the first non-blank cell until the first blank cell.
"""
raise IOError("Cannot get a named column with xlrd")
def get_range(self, rangename, wsid=None, raw=False):
"""
Get values for a specified range
"""
rangeid = self._range(rangename)
if not rangeid is None:
return self._get_range_data(rangeid, raw)
def _get_range_data(self, _range, raw):
"""
Return data for the specified range.
"""
sheet, rowxlo, rowxhi, colxlo, colxhi = _range.area2d()
if (rowxhi-rowxlo)==1 and (colxhi-colxlo) == 1:
return self._translate(sheet.cell(rowxlo, colxlo))
else:
#
# If the range is a column or row of data, then return a list of values.
# Otherwise, return a tuple of tuples
#
ans = []
for i in range(rowxhi-rowxlo):
col = []
for j in range(colxhi-colxlo):
val = self._translate(sheet.cell(i+rowxlo,j+colxlo))
col.append( val )
if len(col) == 1:
ans.append( col[0] )
else:
ans.append( list(col) )
return list(ans)
def get_range_nrows(self, rangename, wsid=None):
"""
Get the number of rows in a specified range
"""
_range = self._range(rangename)
sheet, rowxlo, rowxhi, colxlo, colxhi = _range.area2d()
return rowxhi-rowxlo
def get_range_ncolumns(self, rangename, wsid=None):
"""
Get the number of columns in a specified range
"""
_range = self._range(rangename)
sheet, rowxlo, rowxhi, colxlo, colxhi = _range.area2d()
return colxhi-colxlo
def _range(self, rangeid, wsid=None):
"""
Return a range for a given worksheet
"""
self.activate(wsid)
#
# If rangeid is a tuple, then this is a list of arguments to pass
# to the Range() method.
#
if type(rangeid) is tuple:
return self.ws().Range(*rangeid)
#
# Otherwise, we assume that this is a range name.
#
else:
tmp_= self.wb.name_map.get(rangeid.lower(), None)
if tmp_ is None:
raise IOError("Range %s is not found" % rangeid)
if len(tmp_) > 1:
raise IOError("Cannot process scoped names")
return tmp_[0]
def _translate(self, cell):
"""
Translate the cell value to a standard type
"""
if cell.ctype == 0:
return ""
if cell.ctype == 1:
return str(cell.value)
if cell.ctype == 2 or cell.ctype == 3 or cell.ctype == 4:
return cell.value
if cell.ctype == 6:
return None
raise ValueError("Unexpected cell error")
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