def get_pdf_results(task_id): # Flask response response = Response() response.status_code = 200 task = data.get_task_result(task_id) #Saving file to a in-memory file output_file = StringIO.StringIO() def header_footer(canvas, doc): canvas.saveState() background = 'static/img/pdf_bg.png' canvas.drawImage(background, 1 * inch, 5.75 * inch, width=8 * inch, height=6 * inch, mask='auto') # Header logo = Image('static/img/logo/logo.png') logo.drawHeight = 0.5 * inch logo.drawWidth = 1.75 * inch date = datetime.now().strftime("%y-%m-%d %H:%M") headerData = [[logo, '', date]] headerTable = Table(headerData, colWidths=[2 * inch, 3.58 * inch, 1.2 * inch], style=[('LINEBELOW', (0, 0), (2, 0), 1, colors.HexColor(0xcccccc)), ('TEXTCOLOR', (0, 0), (2, 0), colors.HexColor(0x807F83)), ('VALIGN', (1, 0), (1, 0), 'MIDDLE'), ('VALIGN', (2, 0), (2, 0), 'MIDDLE')]) headerTable.wrapOn(canvas, doc.width, doc.topMargin) headerTable.drawOn(canvas, doc.leftMargin, doc.height + doc.topMargin) pageNum = "Page %d" % doc.page footerData = [[ 'KAPSARC Building Energy Assessment Tool (BEAT)', pageNum ]] footerTable = Table(footerData, colWidths=[5.76 * inch, 1 * inch], style=[('LINEABOVE', (0, 0), (1, 0), 2, colors.HexColor(0xcccccc)), ('TEXTCOLOR', (0, 0), (1, 0), colors.HexColor(0x807F83)), ('ALIGN', (1, 0), (1, 0), 'RIGHT')]) footerTable.wrapOn(canvas, doc.width, doc.bottomMargin) footerTable.drawOn(canvas, doc.leftMargin, 0.5 * inch) canvas.restoreState() pdfmetrics.registerFont(TTFont('Vera', 'Vera.ttf')) pdfmetrics.registerFont(TTFont('VeraBd', 'VeraBd.ttf')) pdfmetrics.registerFont(TTFont('VeraIt', 'VeraIt.ttf')) pdfmetrics.registerFont(TTFont('VeraBI', 'VeraBI.ttf')) styles = getSampleStyleSheet() # Title styles.add( ParagraphStyle(name='styleTitle', alignment=TA_CENTER, fontSize=16, fontName='Vera', textColor=colors.HexColor(0x61a659), leading=30, spaceBefore=35, spaceAfter=10)) # Headings styles.add( ParagraphStyle(name='styleHeading', parent=styles['Heading2'], fontSize=14, textColor=colors.HexColor(0x807F83), leading=20, spaceBefore=10, underlineProportion=1.1, spaceAfter=10)) styles.add( ParagraphStyle(name='styleHeading2', parent=styles['Heading2'], fontSize=14, textColor=colors.HexColor(0x61a659), leading=20, spaceBefore=20, underlineProportion=1.1, spaceAfter=20)) styles.add( ParagraphStyle( name='styleHeading3', #alignment= TA_CENTER, fontSize=12, fontName='Vera', textColor=colors.HexColor(0x61a659), leading=20, spaceBefore=10, spaceAfter=5)) # Body text styles.add( ParagraphStyle(name='styleBodyText', parent=styles['Normal'], fontSize=9, textColor=colors.HexColor(0x666666), spaceBefore=5, spaceAfter=15)) styleTitle = styles['styleTitle'] styleHeading = styles['styleHeading'] styleHeading2 = styles['styleHeading2'] styleHeading3 = styles['styleHeading3'] styleBodyText = styles['styleBodyText'] pdf_chart_colors = [ "#3D6531", "#61a24f", "#89B97B", "#B0D1A7", "#cde5c7", "#7e7f82", "#9E9FA1", "#BFBFC1", "#DFDFE0", "#ffd200", "#FFE360", "#FFEE9F", ] Elements = [] doc = BaseDocTemplate(output_file, showBoundary=0, pagesize=A4, title='KASPSARC BEAT Report', author="KAPSARC", leftMargin=0.75 * inch, rightMargin=0.75 * inch, topMargin=inch, bottomMargin=inch) frame = Frame(doc.leftMargin, doc.topMargin, doc.width, doc.height, topPadding=0.3 * inch, showBoundary=0) template = PageTemplate(id='template', frames=[frame], onPage=header_footer) doc.addPageTemplates([template]) ## PAGE 1 #add some flowables Elements.append( Paragraph("KAPSARC Building Energy Assessment Tool (BEAT)", styleTitle)) Elements.append(Paragraph("Your Building Description", styleHeading)) rowHeights = 0.3 * inch calibrationData = task['calibrationData'] Elements.append(Paragraph("General Information:", styleHeading3)) infoTableData = [ [ Paragraph('<b>- Name: </b>' + calibrationData['txtBldgName'], styleBodyText), Paragraph('<b>- Address: </b>' + calibrationData['txtBldgAddress'], styleBodyText), Paragraph('<b>- Type: </b>' + calibrationData['cmbBldgType'], styleBodyText) ], [ Paragraph( '<b>- Location: </b>' + calibrationData['cmbBldgLocation'], styleBodyText), Paragraph('<b>- Shape: </b>' + calibrationData['cmbBldgShape'], styleBodyText), Paragraph( '<b>- Floor Area (m' + u"\u00b2" + '): </b>' + str(calibrationData['txtFloorArea']), styleBodyText) ] ] infoTable = Table(infoTableData, colWidths=[160, 165, 150], rowHeights=rowHeights) Elements.append(infoTable) Elements.append(Paragraph('<br />', styleBodyText)) Elements.append(Paragraph("Envelope Construction Details:", styleHeading3)) envTableData = [ [ Paragraph( '<b>- South Wall: </b>' + calibrationData['cmbSouthWall'], styleBodyText), Paragraph('<b>- West Wall: </b>' + calibrationData['cmbWestWall'], styleBodyText) ], [ Paragraph( '<b>- North Wall: </b>' + calibrationData['cmbNorthWall'], styleBodyText), Paragraph('<b>- East Wall: </b>' + calibrationData['cmbEastWall'], styleBodyText) ], [ Paragraph('<b>- Roof: </b>' + calibrationData['cmbRoof'], styleBodyText), Paragraph( '<b>- Floor: </b>' + calibrationData['cmbFirstFloorContact'], styleBodyText) ], [ Paragraph('<b>- Windows Type: </b>' + calibrationData['glasstype'], styleBodyText), Paragraph( '<b>- Overhang Depth (m): </b>' + str(calibrationData['txtWinSouthOverhang']), styleBodyText) ] ] envTable = Table(envTableData, colWidths=[240, 235], rowHeights=rowHeights) Elements.append(envTable) Elements.append(Paragraph('<br />', styleBodyText)) Elements.append(Paragraph("Air Conditioning Systems", styleHeading3)) hvacTableData = [[ Paragraph( '<b>- HVAC System Type: </b>' + calibrationData['cmbBldgSystem'], styleBodyText), Paragraph( '<b>- Cooling Temperature Setting (' + u"\u00b0" + 'C): </b>' + str(calibrationData['txtCoolSetTemp']), styleBodyText) ], [ Paragraph( '<b>- Energy Efficiency Ratio (EER): </b>' + str(calibrationData['eir']), styleBodyText), Paragraph( '<b>- Heating Temperature Setting (' + u"\u00b0" + 'C): </b>' + str(calibrationData['txtHeatSetTemp']), styleBodyText) ]] hvacTable = Table(hvacTableData, colWidths=[240, 235], rowHeights=rowHeights) Elements.append(hvacTable) Elements.append(Paragraph('<br />', styleBodyText)) Elements.append(Paragraph("Overall Assessment", styleHeading)) Elements.append( Paragraph( "Based on your description and current SASO requirements, the tool provides the following assessments:", styleBodyText)) if task['compliant']: compliant = "<strong><font color=green>meets</font></strong>" else: compliant = "<strong><font color=red>does not meet</font></strong>" if (task['ngEnergyDiff'] < 0): energyDiff = "<strong><font color=green>" + str( task['energyDiff']) + " kWh/year, less</font></strong>" else: energyDiff = "<strong><font color=red>" + str( task['energyDiff']) + " kWh/year, more</font></strong>" Elements.append( Paragraph( "- Your building " + compliant + " SASO requirements for all building envelope", styleBodyText)) Elements.append( Paragraph( "- Your building consumed " + energyDiff + " than the SASO Baseline", styleBodyText)) if task['compliant']: Elements.append( Paragraph( "- You may reduce even more your energy consumption in your building by using LED lamps and high efficient appliances and air conditioning system", styleBodyText)) else: Elements.append( Paragraph( " - You need to add more insulation to the walls and/or roof, or use more efficient window glazing to comply with SASO requirements", styleBodyText)) if not task['compliant'] and (task['ngEnergyDiff'] >= 0): Elements.append( Paragraph( " - You may also consider using LED lamps and energy efficient appliances and air conditioning system", styleBodyText)) Elements.append(PageBreak()) Elements.append( Paragraph("How electricity is used in your building?", styleHeading3)) Elements.append( Paragraph( "Your building needs electricity to operate several types of equipment including: air-conditioning, lighting, appliances and domestic hot water.", styleBodyText)) #add image Elements.append( Image('static/img/results-intro.png', width=4 * inch, height=1.2 * inch)) #add text Elements.append( Paragraph( "Based on the description you provided as well as typical lighting and appliances used in households, here how your building consumes electricity on annual basis:", styleBodyText)) bepuPieData = task['bepuPieData'] bepuTableData = [[0 for i in xrange(len(bepuPieData[0]))] for i in xrange(len(bepuPieData) + 1)] bepuChartLabel = [0 for i in xrange(len(bepuPieData))] bepuChartData = [0 for i in xrange(len(bepuPieData))] bepuTableData[0][0] = 'End-Use' bepuTableData[0][1] = 'Annual Electricity Use' for i, result in enumerate(bepuPieData): # write body cells bepuTableData[i + 1][0] = str(result['label']) bepuTableData[i + 1][1] = int(result['value']) bepuChartLabel[i] = str(result['label']) bepuChartData[i] = result['value'] #add chart bepuChart = Drawing(400, 200) pc = Pie() pc.data = bepuChartData labelc = [0 for i in xrange(len(bepuChartData))] for i, r in enumerate(bepuChartData): labelc[i] = str(round(r / sum(bepuChartData) * 100, 1)) + "%" pc.labels = labelc pc._seriesCount = len(bepuChartLabel) pc.slices.strokeColor = colors.HexColor(0xffffff) pc.slices.strokeWidth = 0.5 bepu_chart_colors = ['#FFC43E', '#A4A4A4', '#F67A40', '#5894D0', '#98cd99'] for i, r in enumerate(bepuChartLabel): pc.slices[i].fillColor = colors.HexColor(bepu_chart_colors[i]) pc.width = pc.height = 120 pc.x = 40 pc.y = 30 # add_legend(d, pc) legend = Legend() legend.alignment = 'right' legend.x = pc.width + pc.x + 80 legend.y = pc.height - 10 legend.dx = 8 legend.dy = 8 legend.fontName = 'Helvetica' legend.fillColor = colors.HexColor(0x807F83) legend.fontSize = 10 legend.boxAnchor = 'nw' legend.columnMaximum = 8 legend.strokeWidth = 0.5 legend.strokeColor = colors.HexColor(0xffffff) legend.deltax = 75 legend.deltay = 10 legend.autoXPadding = 10 legend.yGap = 0 legend.dxTextSpace = 5 legend.dividerLines = 1 | 2 | 4 legend.dividerOffsY = 6 legend.subCols.rpad = 70 legend.dividerColor = colors.HexColor(0xdedede) legend.colorNamePairs = [(pc.slices[i].fillColor, (bepuChartLabel[i][0:20], ' %s ' % "{:,}".format(int(pc.data[i])))) for i in xrange(len(pc.data))] legendHeader = Legend() legendHeader.colorNamePairs = [ ('', ('End-Use', 'Annual Electricity Use\n(kWh/year)')) ] legendHeader.alignment = 'right' legendHeader.x = legend.x - 20 legendHeader.y = legend.y + 30 legendHeader.fontName = 'Helvetica' legendHeader.fillColor = colors.HexColor(0x807F83) legendHeader.fontSize = 10 legendHeader.boxAnchor = 'nw' legendHeader.subCols.rpad = 80 legendFooter = Legend() legendFooter.colorNamePairs = [ ('', ('Total', str("{:,}".format(int(sum(bepuChartData)))) + '')) ] legendFooter.alignment = 'right' legendFooter.x = legendHeader.x + 5 legendFooter.y = legend.y - (len(bepuChartLabel) + 1) * 10 legendFooter.fontName = 'Helvetica-Bold' legendFooter.fillColor = colors.HexColor(0x807F83) legendFooter.fontSize = 10 legendFooter.boxAnchor = 'nw' legendFooter.subCols.rpad = 145 bepuChart.add(legend) bepuChart.add(legendHeader) bepuChart.add(legendFooter) pc.slices.fontColor = colors.HexColor(0x807F83) n = len(pc.data) bepuChart.add(pc, '') Elements.append(bepuChart) ## PAGE 2 Elements.append( Paragraph("When electricity is consumed in your building?", styleHeading3)) Elements.append( Paragraph( "Based on the weather of your location as well as typical lighting and appliances used in households, your building consumes electricity as noted in the following monthly profile:", styleBodyText)) #add chart pseBarData = task['pseBarData'] pseTableData = [[0 for i in xrange(len(pseBarData[0]['values']) + 1)] for i in xrange(len(pseBarData) + 1)] pseChartData = [[0 for i in xrange(len(pseBarData[0]['values']))] for i in xrange(len(pseBarData))] pseChartLegend = [0 for i in xrange(len(pseBarData))] pseTableData[0][0] = 'Key' month = [ 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec' ] for i, m in enumerate(month): pseTableData[0][i + 1] = str(month[i]) for i, result in enumerate(pseBarData): # write body cells pseTableData[i + 1][0] = str(result['key']) pseChartLegend[i] = str(result['key']) for j, value in enumerate(result['values']): pseTableData[i + 1][j + 1] = int(result['values'][j]['y']) pseChartData[i][j] = int(result['values'][j]['y']) pseChart = Drawing(400, 200) bc = VerticalBarChart() bc.x = 70 bc.y = 0 bc.height = 200 bc.width = 300 bc.data = pseChartData bc.strokeColor = colors.black bc.valueAxis.valueMin = 0 bc.strokeWidth = 0 bc.valueAxis.valueMin = 0 bc.categoryAxis.style = 'stacked' bc.categoryAxis.labels.boxAnchor = 'ne' bc.categoryAxis.labels.dx = 10 bc.categoryAxis.labels.dy = -2 bc.valueAxis.labels.fontName = 'Helvetica' bc.valueAxis.labels.fontSize = 10 bc.valueAxis.strokeWidth = 0.5 bc.valueAxis.strokeColor = colors.HexColor(0x807F83) bc.categoryAxis.strokeWidth = 0.5 bc.categoryAxis.strokeColor = colors.HexColor(0x807F83) bc.valueAxis.labels.fillColor = colors.HexColor(0x807F83) bc.categoryAxis.labels.fontName = 'Helvetica' bc.categoryAxis.labels.fontSize = 10 bc.categoryAxis.labels.fillColor = colors.HexColor(0x807F83) bc.categoryAxis.categoryNames = month # create a list and add the elements of our document (image, paragraphs, table, chart) to it #add our barchart and legend bc.barWidth = .3 * inch bc.groupSpacing = .2 * inch bc.bars.strokeColor = colors.HexColor(0xffffff) bc.bars.strokeWidth = 0. pse_chart_colors = ['#FFC43E', '#A4A4A4', '#F67A40', '#5894D0'] for i, r in enumerate(pseChartLegend): bc.bars[i].fillColor = colors.HexColor(pse_chart_colors[i]) # = colors.blue legend = Legend() legend.alignment = 'right' legend.x = bc.width + bc.x + 5 legend.y = bc.height + bc.y legend.deltax = 40 legend.dxTextSpace = 5 legend.dx = 8 legend.dy = 8 legend.fontName = 'Helvetica' legend.fillColor = colors.HexColor(0x807F83) legend.fontSize = 10 legend.boxAnchor = 'nw' legend.columnMaximum = (len(bc.data) + 1) / 2 legend.strokeWidth = 0.5 legend.strokeColor = colors.HexColor(0xffffff) legend.deltax = 75 legend.deltay = 12 legend.dividerColor = colors.HexColor(0xdedede) legend.columnMaximum = len(pseChartLegend) legend.colorNamePairs = [(bc.bars[i].fillColor, pseChartLegend[i]) for i in xrange(len(bc.data))] #pseChart.hAlign = 'RIGHT' label = Label() label.setOrigin(10, bc.height / 2) #label.boxAnchor = 'sw' label.angle = 90 label.fillColor = colors.HexColor(0x807F83) label.setText('Electricity Consumption (kWh)') label.fontName = 'Helvetica' pseChart.add(legend, 'legend') pseChart.add(bc) pseChart.add(label) Elements.append(pseChart) Elements.append(PageBreak()) ## PAGE 3 Elements.append( Paragraph( "Does your building meet SASO Thermal Performance Requirements?", styleHeading3)) Elements.append( Paragraph( "Based on your description, the thermal transmittance properties of the walls, roof and glazing are calculated, and compared with SASO thermal building performance requirements:", styleBodyText)) #add chart lvdData = task['lvdData'] lvdChartData = [[0 for i in xrange(len(lvdData[0]['values']))] for i in xrange(len(lvdData))] lvdChartCategoryNames = [0 for i in xrange(len(lvdData[0]['values']))] lvdComparedObjKey = [0 for i in xrange(len(lvdData))] for i, result in enumerate(lvdData): # write body cells lvdComparedObjKey[i] = str(lvdData[i]['key']) for j, value in enumerate(result['values']): lvdChartCategoryNames[j] = value['label'] lvdChartData[i][j] = value['value'] lvdChart = Drawing(400, 200) bc = VerticalBarChart() bc.x = 70 bc.y = 0 bc.height = 200 bc.width = 300 bc.data = lvdChartData bc.strokeColor = colors.black # bc.fillColor=colors.blue bc.valueAxis.valueMin = 0 bc.strokeWidth = 0 bc.valueAxis.valueMin = 0 bc.categoryAxis.labels.boxAnchor = 'n' bc.categoryAxis.labels.dx = 0 bc.categoryAxis.labels.dy = -2 # bc.categoryAxis.labels.angle = 20 bc.valueAxis.labels.fontName = 'Helvetica' bc.valueAxis.labels.fontSize = 10 bc.valueAxis.strokeWidth = 0.5 bc.valueAxis.strokeColor = colors.HexColor(0x807F83) bc.categoryAxis.strokeWidth = 0.5 bc.categoryAxis.strokeColor = colors.HexColor(0x807F83) bc.valueAxis.labels.fillColor = colors.HexColor(0x807F83) bc.categoryAxis.labels.fontName = 'Helvetica' bc.categoryAxis.labels.fontSize = 8 bc.categoryAxis.labels.fillColor = colors.HexColor(0x807F83) bc.categoryAxis.categoryNames = lvdChartCategoryNames bc.categoryAxis.labels.angle = 0 # create a list and add the elements of our document (image, paragraphs, table, chart) to it #add our barchart and legend bc.barWidth = .3 * inch bc.groupSpacing = .2 * inch bc.bars.strokeColor = colors.HexColor(0xffffff) bc.bars.strokeWidth = 0.5 lvd_chart_colors = ['#5894D0', '#F67A40'] for i, r in enumerate(lvdComparedObjKey): bc.bars[i].fillColor = colors.HexColor(lvd_chart_colors[i]) # = colors.blue legend = Legend() legend.alignment = 'right' legend.x = bc.width + bc.x + 5 legend.y = bc.height + bc.y legend.deltax = 40 legend.dxTextSpace = 5 legend.dx = 8 legend.dy = 8 legend.fontName = 'Helvetica' legend.fillColor = colors.HexColor(0x807F83) legend.fontSize = 10 legend.boxAnchor = 'nw' legend.columnMaximum = (len(bc.data) + 1) / 2 legend.strokeWidth = 0.5 legend.strokeColor = colors.HexColor(0xffffff) legend.deltax = 75 legend.deltay = 12 legend.dividerColor = colors.HexColor(0xdedede) legend.columnMaximum = len(lvdComparedObjKey) legend.colorNamePairs = [(bc.bars[i].fillColor, lvdComparedObjKey[i]) for i in xrange(len(bc.data))] #pseChart.hAlign = 'RIGHT' label = Label() label.setOrigin(10, bc.height / 2) #label.boxAnchor = 'sw' label.angle = 90 label.fillColor = colors.HexColor(0x807F83) label.setText('Envelope U-value (W/m' + u'\u00b2' + '.k)') label.fontName = 'Helvetica' lvdChart.add(label) lvdChart.add(legend, 'legend') lvdChart.add(bc) Elements.append(lvdChart) #Elements.append(PageBreak()) Elements.append(Paragraph('<br /><br />', styleBodyText)) ## PAGE 4 Elements.append( Paragraph("How energy efficient is your building?", styleHeading3)) Elements.append( Paragraph( "Using your input specifications, the annual electricity consumption is calculated and compared with a similar building that meets SASO requirements:", styleBodyText)) #add chart bepuComparisonData = task['bepuComparisonData'] bepuComparisonChartData = [[ 0 for i in xrange(len(bepuComparisonData[0]['values'])) ] for i in xrange(len(bepuComparisonData))] bepuChartCategoryNames = [ 0 for i in xrange(len(bepuComparisonData[0]['values'])) ] bepuComparedObjKey = [0 for i in xrange(len(bepuComparisonData))] for i, result in enumerate(bepuComparisonData): # write body cells bepuComparedObjKey[i] = str(bepuComparisonData[i]['key']) for j, value in enumerate(result['values']): bepuChartCategoryNames[j] = value['label'] bepuComparisonChartData[i][j] = value['value'] bepuComparisonChart = Drawing(400, 200) bc = VerticalBarChart() bc.x = 70 bc.y = 0 bc.height = 200 bc.width = 300 bc.data = bepuComparisonChartData bc.strokeColor = colors.black # bc.fillColor=colors.blue bc.valueAxis.valueMin = 0 bc.strokeWidth = 0 bc.valueAxis.valueMin = 0 bc.categoryAxis.labels.boxAnchor = 'ne' bc.categoryAxis.labels.dx = 10 bc.categoryAxis.labels.dy = -2 # bc.categoryAxis.labels.angle = 20 bc.valueAxis.labels.fontName = 'Helvetica' bc.valueAxis.labels.fontSize = 10 bc.valueAxis.strokeWidth = 0.5 bc.valueAxis.strokeColor = colors.HexColor(0x807F83) bc.categoryAxis.strokeWidth = 0.5 bc.categoryAxis.strokeColor = colors.HexColor(0x807F83) bc.valueAxis.labels.fillColor = colors.HexColor(0x807F83) bc.categoryAxis.labels.fontName = 'Helvetica' bc.categoryAxis.labels.fontSize = 10 bc.categoryAxis.labels.fillColor = colors.HexColor(0x807F83) bc.categoryAxis.categoryNames = bepuChartCategoryNames bc.categoryAxis.labels.angle = 30 # create a list and add the elements of our document (image, paragraphs, table, chart) to it #add our barchart and legend bc.barWidth = .3 * inch bc.groupSpacing = .2 * inch bc.bars.strokeColor = colors.HexColor(0xffffff) bc.bars.strokeWidth = 0.5 bepu_chart_colors = ['#5894D0', '#F67A40'] for i, r in enumerate(bepuComparedObjKey): bc.bars[i].fillColor = colors.HexColor(bepu_chart_colors[i]) # = colors.blue # bc.bars[1].fillColor = colors.lightblue legend = Legend() legend.alignment = 'right' legend.x = bc.width + bc.x + 5 legend.y = bc.height + bc.y legend.deltax = 40 legend.dxTextSpace = 5 legend.dx = 8 legend.dy = 8 legend.fontName = 'Helvetica' legend.fillColor = colors.HexColor(0x807F83) legend.fontSize = 10 legend.boxAnchor = 'nw' legend.columnMaximum = (len(bc.data) + 1) / 2 legend.strokeWidth = 0.5 legend.strokeColor = colors.HexColor(0xffffff) legend.deltax = 75 legend.deltay = 12 legend.dividerColor = colors.HexColor(0xdedede) legend.columnMaximum = len(bepuComparedObjKey) legend.colorNamePairs = [(bc.bars[i].fillColor, bepuComparedObjKey[i]) for i in xrange(len(bc.data))] #pseChart.hAlign = 'RIGHT' label = Label() label.setOrigin(10, bc.height / 2) #label.boxAnchor = 'sw' label.angle = 90 label.fillColor = colors.HexColor(0x807F83) label.setText('Annual Energy Use (kWh/year)') label.fontName = 'Helvetica' bepuComparisonChart.add(label) bepuComparisonChart.add(legend, 'legend') bepuComparisonChart.add(bc) Elements.append(bepuComparisonChart) Elements.append(PageBreak()) doc.build(Elements) output_file.seek(0) # Set filname and mimetype file_name = 'K-BEAT_export_{}.pdf'.format( datetime.now().strftime("%Y-%m-%d %H:%M:%S")) #Returning the file from memory return send_file(output_file, attachment_filename=file_name, as_attachment=True)