/usr/lib/python3/dist-packages/pyutilib/excel/spreadsheet_win32com.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
#
# Attempt to import win32com stuff. If this fails, then
# set a flag to tell the ExcelSpreadsheet class that it should
# raise an exception in its constructor.
#
from win32com.client.dynamic import Dispatch
from pythoncom import CoInitialize, CoUninitialize
from pythoncom import CoInitialize, CoUninitialize, com_error
from pyutilib.excel.base import ExcelSpreadsheet_base
class ExcelSpreadsheet_win32com(ExcelSpreadsheet_base):
xlToLeft = 1
xlToRight = 2
xlUp = 3
xlDown = 4
xlThick = 4
xlThin = 2
xlEdgeBottom=9
_excel_app_ptr = None
_excel_app_ctr = 0
def can_read(self): return True
def can_write(self): return True
def can_calculate(self): return True
def __init__(self,filename=None, worksheets=(1,), default_worksheet=1):
"""
Constructor.
"""
self.xl=None
self.xlsfile=None
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
#
if filename[1] == ":":
self.xlsfile=filename
else:
self.xlsfile=os.getcwd() + "\\"+filename
#
# Start the excel spreadsheet
#
self.xl = self._excel_dispatch()
self.wb = self.xl.Workbooks.Open(self.xlsfile)
self.worksheets=set(worksheets)
self._ws = {}
for wsid in worksheets:
self._ws[wsid] = self.wb.Worksheets.Item(wsid)
self._ws[wsid].Activate()
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.
"""
self.close()
def activate(self, name):
""" Activate a specific sheet """
if name is None:
return
if not name in self._ws:
self.worksheets.add(name)
self._ws[name] = self.wb.Worksheets.Item(name)
self._ws[name].Activate()
self.default_worksheet=name
def close(self):
"""
Close the spreadsheet
"""
if self is None: #pragma:nocover
return
if self.xl is None:
return
if self.xl.ActiveWorkbook is not None:
self.xl.ActiveWorkbook.Close(SaveChanges=0)
self._excel_quit()
def calc_iterations(self, val=None):
if val is None:
return self.xl.Iteration
if not type(val) is bool:
raise ValueError("ExcelSpreadsheet calc_iterations can only be set to a boolean")
self.xl.Iteration = val
def max_iterations(self, val=None):
if val is None:
return self.xl.MaxIterations
if (not type(val) in [int,float,long]) or val < 0:
raise ValueError("ExcelSpreadsheet max_iterations can only be set to nonnegative integer")
self.xl.MaxIterations = val
def calculate(self):
"""
Perform calculations in a spreadsheet
"""
self.xl.Calculate()
def set_array(self, row, col, val, wsid=None):
self.activate(wsid)
nrows=len(val)
return self.set_range( (self.ws().Cells(row,col), self.ws().Cells(row+nrows-1,col+1)), val)
def get_array(self, row, col, row2, col2, wsid=None, raw=False):
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)
"""
self.activate(wsid)
if type(val) in (int,float):
val=((val,),)
if len(val) != self.get_range_nrows(rangename):
raise IOError("Setting data with "+str(len(val))+" rows but range has "+str(self.get_range_nrows(rangename)))
if type(val) is tuple:
data = val
elif type(val) not in (float,int,bool):
data=[]
for item in val:
if type(item) is tuple:
data.append(item)
elif type(item) in (float,int,bool):
data.append( (item,) )
else:
data.append(tuple(item))
data = tuple(data)
self._range(rangename).Value = data
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.
"""
self.activate(wsid)
name = colname+"1"
if self.get_range(name) is None:
start = self.ws().Range(name).End(self.xlDown)
else:
start = self.ws().Range(name)
if contiguous:
range = self.ws().Range(start, start.End(self.xlDown))
else:
range = self.ws().Range(start, self.ws().Range(colname+"65536").End(self.xlUp))
tmp = self._get_range_data(range, raw)
return tmp
def get_range(self, rangename, wsid=None, raw=False):
"""
Get values for a specified range
"""
self.activate(wsid)
range = self._range(rangename)
return self._get_range_data(range, raw)
def _get_range_data(self, range, raw):
if raw:
return range.Value
nrows = range.Rows.Count
ncols = range.Columns.Count
if range.Columns.Count == 1:
if nrows == 1:
#
# The range is a singleton, so return a float
#
return range.Value
else:
#
# The range is a column of data, so return a tuple of floats
#
ans=[]
for val in range.Value:
ans.append(val[0])
return tuple(ans)
else:
if nrows == 1:
#
# The range is a row of data, so return a tuple of floats
#
return range.Value[0]
else:
#
# The range is a two-dimensional array, so return the values
# as a tuple of tuples.
#
return range.Value
def get_range_nrows(self, rangename, wsid=None):
"""
Get the number of rows in a specified range
"""
self.activate(wsid)
return self._range(rangename).Rows.Count
def get_range_ncolumns(self, rangename, wsid=None):
"""
Get the number of columns in a specified range
"""
self.activate(wsid)
return self._range(rangename).Columns.Count
def _range(self, rangeid, wsid=None):
"""
Return a range for a given worksheet
"""
self.activate(wsid)
try:
#
# 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.
#
# to the Range() method.
#
else:
return self.ws().Range(rangeid)
except com_error:
raise IOError("Unknown range name `"+str(rangeid)+"'")
def _excel_dispatch(self):
"""
A private method that launches Excel.
This keeps a counter of the number of ExcelSpreadsheet objects
that are running.
"""
if ExcelSpreadsheet_win32com._excel_app_ctr == 0:
ExcelSpreadsheet_win32com._excel_app_ptr = Dispatch('Excel.Application')
ExcelSpreadsheet_win32com._excel_app_ctr += 1
return ExcelSpreadsheet_win32com._excel_app_ptr
def _excel_quit(self):
"""
A method that quits from Excel after all spreadsheets are closed.
"""
if ExcelSpreadsheet_win32com._excel_app_ctr == 0:
return None
if ExcelSpreadsheet_win32com._excel_app_ctr > 1:
ExcelSpreadsheet_win32com._excel_app_ctr -= 1
return ExcelSpreadsheet_win32com._excel_app_ctr
ExcelSpreadsheet_win32com._excel_app_ctr = 0
ExcelSpreadsheet_win32com._excel_app_ptr.Quit()
del ExcelSpreadsheet_win32com._excel_app_ptr
return 0
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