Identifying Excel Sheet cell color code using XLRD package
Question
I am writing a python script to read data from an excel sheet using xlrd. Few of the cells of the the work sheet are highlighted with different color and I want to identify the color code of the cell. Is there any way to do that ? An example would be really appreciated.
Solution
Here is one way to handle this:
import xlrd
book = xlrd.open_workbook("sample.xls", formatting_info=True)
sheets = book.sheet_names()
print "sheets are:", sheets
for index, sh in enumerate(sheets):
sheet = book.sheet_by_index(index)
print "Sheet:", sheet.name
rows, cols = sheet.nrows, sheet.ncols
print "Number of rows: %s Number of cols: %s" % (rows, cols)
for row in range(rows):
for col in range(cols):
print "row, col is:", row+1, col+1,
thecell = sheet.cell(row, col)
# could get 'dump', 'value', 'xf_index'
print thecell.value,
xfx = sheet.cell_xf_index(row, col)
xf = book.xf_list[xfx]
bgx = xf.background.pattern_colour_index
print bgx
More info on the Python-Excel Google Group.
OTHER TIPS
The Solution suggested by JMax works only for xls
file, not for xlsx
file. This raises a NotImplementedError: formatting_info=True not yet implemented
. Xlrd
library is still not updated to work for xlsx
files. So you have to Save As
and change the format every time which may not work for you.
Here is a solution for xlsx
files using openpyxl
library. A2
is the cell whose color code we need to find out.
import openpyxl
from openpyxl import load_workbook
excel_file = 'color_codes.xlsx'
wb = load_workbook(excel_file, data_only = True)
sh = wb['Sheet1']
color_in_hex = sh['A2'].fill.start_color.index # this gives you Hexadecimal value of the color
print ('HEX =',color_in_hex)
print('RGB =', tuple(int(color_in_hex[i:i+2], 16) for i in (0, 2, 4))) # Color in RGB
This function returns cell background's rgb value in tuple.
def getBGColor(book, sheet, row, col):
xfx = sheet.cell_xf_index(row, col)
xf = book.xf_list[xfx]
bgx = xf.background.pattern_colour_index
pattern_colour = book.colour_map[bgx]
#Actually, despite the name, the background colour is not the background colour.
#background_colour_index = xf.background.background_colour_index
#background_colour = book.colour_map[background_colour_index]
return pattern_colour