问xhtml2pdf为本地html文件生成空白pdf

EN

    source = ColumnDataSource(data=dict(x=xx, y=yy, z=val))
    
    surface1 = Surface3d1(x="x", y="y", z="z", data_source=source, width=600, height=600)
    surface2 = Surface3d2(x="x", y="y", z="z", data_source=source, width=600, height=600)
    surface3 = Surface3d3(x="x", y="y", z="z", data_source=source, width=600, height=600)
    surface4 = Surface3d4(x="x", y="y", z="z", data_source=source, width=600, height=600)
    
    l1 = gridplot([[Div(text = 'Side View 1'), Div(text = 'Front View')], [surface1, surface2]])
    l2 = gridplot([[Div(text = 'Side View 2'), Div(text = 'Top View')], [surface3, surface4]])

    filename = filename_out.split("\\")
    
    layout = column(Div(text = str(filename[-1].replace('_', ' '))),Div(text = 'Absolute Warpage = ' + str(warpage)),l1,l2)
    output_file(filename_out[:-1]+'.html', title = 'CMM Scan', mode = 'inline')
    save(layout)

def convert_html_to_pdf(source_html, output_filename):
from xhtml2pdf import pisa 
# open output file for writing (truncated binary)
result_file = open(output_filename, "w+b")

# convert HTML to PDF
pisa_status = pisa.CreatePDF(
        source_html,                # the HTML to convert
        dest=result_file)           # file handle to recieve result

# close output file
result_file.close()                 # close output file

# return True on success and False on errors
return pisa_status.err

convert_html_to_pdf(str(filename_out+'.html'),str(filename_out+'.pdf'))