如何在 Python 中使用 xlsxwriter 创建“if and”语句以有条件地格式化单元格列

Question

This isn't working (obviously), so i'm wondering if there are any suggestions. Thank you.

The goals: - If AA2 > 0 and AB2 < 0, then format cells in column A with formatc3. - If AA2 < 0 and AB2 > 0, then format cells in column A with formatc3.

worksheet.conditional_format('A2:A2100', {'type':   'formula',
                                        'criteria': '=AND($AA2>0,$AB2<0)',
                                        'format':   formatc3})

worksheet.conditional_format('A2:A2100', {'type':   'formula',
                                        'criteria': '=AND($AA2<0,$AB2>0)',
                                        'format':   formatc3})

Answer 1

You almost got it right, you miss one small thing in the excel formula, they should start from the first row and not the second. Also no need to write two different statements as your conditions could be nested in just one, it's more efficient and readable. In general try to reproduce your desired output manually in excel, then it's easy to convert it to xlsxwriter's syntax.

Here is a working example:

import pandas as pd
import numpy as np

data = {'Col1': [2, 3, -2, 5],
        'Col2': [-5, 6, 7, -8],
        'Col3': [np.nan, np.nan, np.nan, np.nan]}

df = pd.DataFrame(data)

writer = pd.ExcelWriter('test.xlsx', engine='xlsxwriter')
df.to_excel(writer, sheet_name='Sheet1', index=False)
workbook = writer.book
worksheet = writer.sheets['Sheet1']

green = workbook.add_format({'bg_color': '#C6EFCE'})

worksheet.conditional_format('C1:C1048576', {'type': 'formula',
                            'criteria': '=OR(AND($A1>0,$B1<0),AND($A1<0,$B1>0))',
                            'format': green})

writer.save()

Output: