writing to existing workbook using xlwt

Question

I am unable to find examples where xlwt is used to write into existing files  I have a existing xls file that I need to write to  When I use xlrd to read the file  I cant seem to figure out how to transform the  Book  type returned into a xlwt Workbook  I would appreciate if someone can point me to an example

User · Answer

The code example is exactly this   from xlutils copy import copy from xlrd import   w   copy open workbook  book1 xls    w get sheet 0  write 0 0  foo   w save  book2 xls     You ll need to create book1 xls to test  but you get the idea

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I had the same problem  My customer ordered me Python 3 4 script that updates XLS  not XLSX  Excel files   The 1st package xlrd was installed by  pip install  without problems in my Python home   The 2nd one xlwt needed to say  pip install xlwt-future  to be compatible   The 3rd one xlutils has no support for Python 3  but I adapted it a little bit and now it works at least for dummy script     C  Python343 python from xlutils copy import copy   http   pypi python org pypi xlutils from xlrd import open workbook   http   pypi python org pypi xlrd from xlwt import easyxf   http   pypi python org pypi xlwt  file path    C  Dev Test upd xls  rb   open workbook  C  Dev Test xls  formatting info True  r sheet   rb sheet by index 0    read only copy to introspect the file wb   copy rb    a writable copy  I can t read values out of this  only write to it  w sheet   wb get sheet 0    the sheet to write to within the writable copy w sheet write 1  1   Value   wb save file path    I attached the file here  http   ifolder su 43507580  Write to alexander samoylov gmail com if it got expired   P S   Some functions are not called in the dummy example  so maybe they will need for an adaptation also  Who wants to do it  fix exceptions one-by-one with a google help  It s not a very difficult task  because the package code is small

User · Answer

You need xlutils copy  Try something like this   from xlutils copy import copy w   copy  book1 xls   w get sheet 0  write 0 0  foo   w save  book2 xls     Keep in mind you can t overwrite cells by default as noted in this question

User · Answer

Here s some sample code I used recently to do just that   It opens a workbook  goes down the rows  if a condition is met it writes some data in the row   Finally it saves the modified file   from xlutils copy import copy   http   pypi python org pypi xlutils from xlrd import open workbook   http   pypi python org pypi xlrd  START ROW   297   0 based  subtract 1 from excel row number  col age november   1 col summer1   2 col fall1   3  rb   open workbook file path formatting info True  r sheet   rb sheet by index 0    read only copy to introspect the file wb   copy rb    a writable copy  I can t read values out of this  only write to it  w sheet   wb get sheet 0    the sheet to write to within the writable copy  for row index in range START ROW  r sheet nrows       age nov   r sheet cell row index  col age november  value     if age nov    3           If 3  then Combo I 3-4 year old  for both summer1 and fall1         w sheet write row index  col summer1   Combo I 3-4 year old           w sheet write row index  col fall1   Combo I 3-4 year old    wb save file path     out    os path splitext file path  -1

User · Answer

openpyxl    - - coding  utf-8 - - import openpyxl file    sample xlsx  wb   openpyxl load workbook filename file    Seleciono la Hoja ws   wb get sheet by name  Hoja1     Valores a Insertar ws  A3     42 ws  A4     142   Escribirmos en el Fichero wb save file

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