将pandas Dataframe转换为PDF时增加特定列的宽度

import pandas as pd
from reportlab.lib.pagesizes import letter
from reportlab.pdfgen import canvas

data = {'Name': ['John', 'Emma', 'Robert'],
        'Age': [25, 28, 32],
        'Salary': [5000, 6000, 7000]}
df = pd.DataFrame(data)

pdf_name = 'output.pdf'
c = canvas.Canvas(pdf_name, pagesize=letter)

col_widths = [100, 50, 75]  # 设置每列的宽度，单位为像素

table_header = df.columns.tolist()  # 获取列名
table_data = [table_header] + df.values.tolist()  # 获取数据行
table = Table(table_data, colWidths=col_widths)
table.setStyle(TableStyle([('BACKGROUND', (0, 0), (-1, 0), colors.grey),
                           ('TEXTCOLOR', (0, 0), (-1, 0), colors.whitesmoke),
                           ('ALIGN', (0, 0), (-1, 0), 'CENTER'),
                           ('FONTNAME', (0, 0), (-1, 0), 'Helvetica-Bold'),
                           ('FONTSIZE', (0, 0), (-1, 0), 14),
                           ('BOTTOMPADDING', (0, 0), (-1, 0), 12),
                           ('BACKGROUND', (0, 1), (-1, -1), colors.beige),
                           ('TEXTCOLOR', (0, 1), (-1, -1), colors.black),
                           ('FONTNAME', (0, 1), (-1, -1), 'Helvetica'),
                           ('FONTSIZE', (0, 1), (-1, -1), 12),
                           ('ALIGN', (0, 1), (-1, -1), 'CENTER'),
                           ('VALIGN', (0, 1), (-1, -1), 'MIDDLE'),
                           ('BOTTOMPADDING', (0, 1), (-1, -1), 6),
                           ('BACKGROUND', (0, 0), (-1, 0), colors.grey),
                           ('TEXTCOLOR', (0, 0), (-1, 0), colors.whitesmoke),
                           ('GRID', (0, 0), (-1, -1), 1, colors.black),
                           ('BOX', (0, 0), (-1, -1), 1, colors.black)]))
table.wrapOn(c, 800, 600)  # 设置表格宽度和高度
table.drawOn(c, 30, 500)  # 设置表格位置

c.save()