Format Excel Column header for better visibility and Color

问题

I have gone through many posts but did not found the exact way to do the below. Sorry for attaching screenshot(Just for better visibility) as well , I will write it also. Basically it looks like -

Name_of_the_Man Address_of_Man  City
Jordan           NC             LMN

Input csv looks like

Output Needed

I have this code with me that picks the csv and attach as sheet in excel.

writer = pd.ExcelWriter('final.xlsx'), engine='xlsxwriter')
for f in glob.glob(os.path.join(Path, "*.csv")):
         df = pd.read_csv(f)
         df.to_excel(writer, sheet_name=os.path.basename(f))
writer.save()

I want my csv file - having good space in between and color for the column header.I have went through this link Python - change header color of dataframe and save it to excel file but it's not serving the purpose - It is coloring the sheet itself apart from column.

Update: Got the answer below . Also wondering if that can be possible just a thought

回答1:

You can use Pandas Excel output with user defined header format with solution for change width by content:

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

# Convert the dataframe to an XlsxWriter Excel object. Note that we turn off
# the default header and skip one row to allow us to insert a user defined
# header. Also remove index values by index=False
df.to_excel(writer, sheet_name='Sheet1', startrow=1, header=False, index=False)

workbook  = writer.book
worksheet = writer.sheets['Sheet1']
# Add a header format.
header_format = workbook.add_format({
    'bold': True,
    'fg_color': '#ffcccc',
    'border': 1})
for col_num, value in enumerate(df.columns.values):
    worksheet.write(0, col_num, value, header_format)

    column_len = df[value].astype(str).str.len().max()
    # Setting the length if the column header is larger
    # than the max column value length
    column_len = max(column_len, len(value)) + 3
    print(column_len)
    # set the column length
    worksheet.set_column(col_num, col_num, column_len)

# Close the Pandas Excel writer and output the Excel file.
writer.save()

Changed your solution:

writer = pd.ExcelWriter('final.xlsx'), engine='xlsxwriter')
for f in glob.glob(os.path.join(Path, "*.csv")):
         df = pd.read_csv(f)
         df.to_excel(writer, sheet_name=os.path.basename(f))

        workbook  = writer.book
        worksheet = writer.sheets[os.path.basename(f)]
        # Add a header format.
        header_format = workbook.add_format({
            'bold': True,
            'fg_color': '#ffcccc',
            'border': 1})
        for col_num, value in enumerate(df.columns.values):
            worksheet.write(0, col_num, value, header_format)
            column_len = df[value].astype(str).str.len().max()
            # Setting the length if the column header is larger
            # than the max column value length
            column_len = max(column_len, len(value)) + 3
            print(column_len)
            # set the column length
            worksheet.set_column(col_num, col_num, column_len)

writer.save()

EDIT:

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

#skip 2 rows
df.to_excel(writer, sheet_name='Sheet1', startrow=2, header=False, index=False)

workbook  = writer.book
worksheet = writer.sheets['Sheet1']
# Add a header format.
header_format = workbook.add_format({
    'bold': True,
    'fg_color': '#ffcccc',
    'border': 1})

#create dictionary for map length of columns 
d = dict(zip(range(25), list(string.ascii_uppercase)))
#print (d)

max_len = d[len(df.columns) - 1]
print (max_len)
#C
#dynamically set merged columns in first row
worksheet.merge_range('A1:' + max_len + '1', 'This Sheet is for Personal Details')

for col_num, value in enumerate(df.columns.values):
    #write to second row
    worksheet.write(1, col_num, value, header_format)

    column_len = df[value].astype(str).str.len().max()
    column_len = max(column_len, len(value)) + 3
    worksheet.set_column(col_num, col_num, column_len)

# Close the Pandas Excel writer and output the Excel file.
writer.save()

来源：https://stackoverflow.com/questions/50664839/format-excel-column-header-for-better-visibility-and-color