使用 Python 对齐 Excel 工作表中的某些列

Question

I am having trouble aligning the columns of an Excel Worksheet using xlsxWriter. For further clarity here is the data-frame

   Name        Employee ID      Year
John Miller    2014108          2014
Sarah Jones    2011548          2011
Jake Kenedy    2010546          2010

I am trying to align the Name column so that the values are on the left instead of being centred

I tried this

workbook = writer.book
cell_format = workbook.add_format()
cell_format.set_align('left')

However, nothing happened. Any suggestions would be greatly appreciated.

Answer 1

You need to actually apply the formatting the name column.

df = pd.DataFrame ({'Name': ['J Miller', 'S Jones', 'J Kenedy'],
                    'Employee ID': [1,2,3],
                    'Year': [2014, 2011, 2010]})

writer = pd.ExcelWriter('left_aligned_file.xlsx', engine='xlsxwriter')

# Add your dataframe to the writer
df.to_excel(writer, sheet_name='Sheet1')

workbook = writer.book
worksheet = writer.sheets['Sheet1']

new_format = workbook.add_format()
new_format.set_align('left')

# Apply new format to name column, which will be column C.
worksheet.set_column('C:C', 10, new_format)
writer.save()

Might be worth a look: http://xlsxwriter.readthedocs.io/example_pandas_column_formats.html

Answer 2

I had the same issue related to the index. My dataframe had the first column of type string as the index. It appears the index cannot be reformatted using xlsxwriter . To get around this I tried the following in this order:

df.reset_index(inplace=True)
df.to_excel(writer, sheet_name='Sheet1',index=False)

Then the formatting functions worked.