coloring cells in excel with pandas
<p>I need some help here. So i have something like this </p>

<pre><code>import pandas as pd
path = '/Users/arronteb/Desktop/excel/ejemplo.xlsx'
xlsx = pd.ExcelFile(path)
df = pd.read_excel(xlsx,'Sheet1')
df['is_duplicated'] = df.duplicated('#CSR')
df_nodup = df.loc[df['is_duplicated'] == False]
df_nodup.to_excel('ejemplo.xlsx', encoding='utf-8')
</code></pre>

<p>So basically this program load the <code>ejemplo.xlsx</code> (ejemplo is example in Spanish, just the name of the file) into <code>df</code> (a <code>DataFrame</code>), then checks for duplicate values in a specific columnââ. It deletes the duplicates and saves the file again. That part works correctly. The problem is that instead of removing duplicates, I need highlight the cells containing them with a different color, like yellow.</p>

<p>I just had this same problem and I just solved it this week.  My problem was not getting the includes to work properly to get the online code that I found working properly.</p>

<p>I am going to assume you mean change the background color not change the font color.  If I am wrong clarify your request.</p>

<p>My solution is tied to a particular library.  openpyxl</p>

<pre><code>#### This import section is where my mistake was at
#### This works for me
import openpyxl    ### Excel files 
from openpyxl.styles import PatternFill, Border, Side, Alignment, Protection, Font
from openpyxl.styles import Fill, Color
from openpyxl.styles import Style
from openpyxl.styles.colors import RED
from openpyxl.styles.colors import GREEN


str_xls_PathFileCurrent = str_xls_FileName
### Opens Excel Document
var_xls_FileOpen    = openpyxl.load_workbook(str_xls_PathFileCurrent) 
### Opens up the Excel worksheet 
var_xls_TabName     = var_xls_FileOpen.worksheets[0]                  
### Put the spreadsheet tab names into an array 
ary_xls_SheetNames  = var_xls_FileOpen.get_sheet_names()              
### Open the sheet in the file you working on 
var_xls_TabSheet    = var_xls_FileOpen.get_sheet_by_name(ary_xls_SheetNames[0])
xls_cell = var_xls_TabSheet['d10']

#### Changes the cell background color 
xls_cell.style = Style(fill=PatternFill(patternType='solid'
    , fgColor=Color('C4C4C4')))  ### Changes background color 

#### Changes the fonts (does not use style) 
xls_cell.font = xls_cell.font.copy(color  = 'FFFF0000') ### Works (Changes to red font text) 
xls_cell.font = xls_cell.font.copy(bold  = True) ### Works (Changes to bold font) 
xls_cell.font = xls_cell.font.copy(italic= True) ### Works (Changes to Italic Text) 
xls_cell.font = xls_cell.font.copy(size  =   34) ### Works (Changes Size) 
</code></pre>

python excel pandas duplicates highlight