Question

我有一个使用ReportLab创建报告的python脚本，该脚本已经过测试并按预期工作，但有时我收到以下错误消息

TraceBack info:

File "C:\tools\LegionellaTool.py", line 605, in <module>

createReport(selectedCoolingTowers, Report_outputs_folder, dbo_COLGIS, openPDF)

Error Info:

..\Objects\moduleobject.c:50: bad argument to internal function

第605行是createReport(selectedCoolingTowers, Report_outputs_folder, dbo_COLGIS, openPDF)

createReport是...创建报告的功能。我已经通过代码进行了调试，但我没有遇到任何错误，可能会出现错误，错误只会在某些情况下发生，而在其他情况下报告创建正常。

编辑===== createReport代码

def createReport(myReportTable, myReportFolder, M3Table, OpenPDF):
    global Author
    global TimeStamp

##    myReportTable = gp.GetParameterAsText(0)
##    myReportFolder = gp.GetParameterAsText(1)
##    M3Table = gp.GetParameterAsText(2)
##    OpenPDF = gp.GetParameterAsText(3)

    Author = getpass.getuser() #gets OS user name
    TimeStamp = str(datetime.datetime.now().hour) + ':' + str(datetime.datetime.now().minute) + ' on the ' + str(datetime.date.today().day) + '/' + str(datetime.date.today().month) + '/' + str(datetime.date.today().year) 

    #add time stamp to file name
    myFile = myReportFolder + os.sep + 'CoolingTowersForInspection_' + str(datetime.datetime.now().hour) + '_' + str(datetime.datetime.now().minute) + '_' + str(datetime.date.today().day) + '_' + str(datetime.date.today().month) + '_' + str(datetime.date.today().year) + '.pdf'
    c = reportlab.pdfgen.canvas.Canvas(myFile)

    #creates sectors array
    sectors = []
    sectors.append('NW')
    sectors.append('NE')
    sectors.append('SW')
    sectors.append('SE')

    for sector in sectors:
        #sector header
        #framePage(c, 'Cooling Towers for Inspection - ' + sector + ' sector')
        title = 'Cooling Towers for Inspection - ' + sector + ' sector'
        c.setFont('Helvetica',20) #title font
        c.drawString(reportlab.lib.units.inch, 10.5 * reportlab.lib.units.inch, title) #creates title

        c.setFont('Helvetica',10) #header and footer font

        #creates header
        c.drawCentredString(4.135 * reportlab.lib.units.inch, 0.75 * reportlab.lib.units.inch,
                                 'Report generated by ' + Author + ' at ' + TimeStamp + ' - Page %d' % c.getPageNumber())

        #creates footer
        c.drawCentredString(4.135 * reportlab.lib.units.inch, 11.00 * reportlab.lib.units.inch,
                                'Environmental Services')

        #draw a border
        c.setStrokeColorRGB(1,0,0)
        c.setLineWidth(5)
        c.line(0.8 * reportlab.lib.units.inch, reportlab.lib.units.inch, 0.8 * reportlab.lib.units.inch, 10.75 * reportlab.lib.units.inch)

        #reset carefully afterwards
        c.setLineWidth(1)
        c.setStrokeColorRGB(0,0,0)

        c.setFont('Helvetica', 10)

        #gets towers in that sector
        myTowers = arcpy.SearchCursor(myReportTable,"\"SECTOR\" = '" + sector + "'","","")
        selTower = myTowers.next()

        y = 730

        if selTower is not None:

            while selTower:
                #insert page break when close to the end of the page
                if y < 110:
                    c.showPage()
                    y = 730
                    framePage(c, 'Cooling Towers for Inspection - ' + sector + ' sector')

                if selTower.TOWER_NAME <> None:
                    c.drawString(100, y, string.strip(selTower.TOWER_NAME))
                else:
                    c.drawString(100, y, "na")
                y = y - 12

                if selTower.TOWER_ADDRESS <> None:
                    c.drawString(100, y, string.strip(selTower.TOWER_ADDRESS))
                else:
                    c.drawString(100, y, "na")
                y = y - 12

                c.drawString(100, y, "Number of towers: " + str(int(selTower.NUMBER_OF_TOWERS)) + " ;   M3 Code: " + selTower.UKEY + " ;   Distance band: " + str(int(selTower.distance)) + " meters")
                y = y - 12

                inspectString = ""
                if selTower.TOWER_RATING <> None:
                    inspectString = "Inspection rating: " + selTower.TOWER_RATING
                else:
                    inspectString = "Inspection rating: na;"

                if selTower.TOWER_LAST_INSPECTION <> None:
                    t = selTower.TOWER_LAST_INSPECTION
                    strLastInspection = t.strftime("%A, %d %b %Y")

                    inspectString = inspectString + "   Last inspection: " + strLastInspection
                    #inspectString = inspectString + "   Last inspection: " + selTower.TOWER_LAST_INSPECTION
                else:
                    inspectString = inspectString + "   Last inspection: na"

                c.drawString(100, y, inspectString)
                y = y - 12

                c.drawString(100, y, "Contacts:")
                y = y - 12

                myTowerUKEY = selTower.UKEY

                #gets contacts for that cooling tower            
                myTowerContacts = arcpy.SearchCursor(M3Table,"\"UKEY\" = '" + myTowerUKEY + "'","","")

                selContact = myTowerContacts.next()

                while selContact:
                    if y < 110:
                        c.showPage()
                        y = 730
                        framePage(c, 'Cooling Towers for Inspection - ' + sector + ' sector')

                    contact = ""
                    if selContact.TITLE <> None:
                        if string.strip(selContact.TITLE) <> "":
                            contact = string.strip(selContact.TITLE) + " "
                    if selContact.FIRSTNAME <> None:
                        contact = contact + selContact.FIRSTNAME + " "
                    if selContact.FAMILYNAME <> None:
                        contact = contact + selContact.FAMILYNAME + " "
                    if selContact.JOBTITLE <> None:
                        contact = contact + "(" + selContact.JOBTITLE + ") "
                    if selContact.TELW <> None:
                        contact = contact + selContact.TELW + "(work) "
                    if selContact.MOBILE <> None:
                        if string.strip(selContact.MOBILE) <> "":
                            contact = contact + string.strip(selContact.MOBILE) + "(mobile) "
                    if selContact.TELH <> None:
                        if string.strip(selContact.TELH) <> "":
                            contact = contact + string.strip(selContact.TELH) + "(home)"

                    contact = string.strip(contact)

                    c.drawString(100, y, contact)
                    y = y - 12
                    selContact = myTowerContacts.next()                

                y = y - 12
                del myTowerContacts
                selTower = myTowers.next()
        else:
            c.drawString(100, y, "no cooling towers for inspection in this sector")

        c.showPage() #insert page break after each sector

    del myTowers

    c.save()

    if OpenPDF == "true":
        os.startfile(myFile)

#function that creates each page
def framePage(canvas, title):
    canvas.setFont('Helvetica',20) #title font
    canvas.drawString(reportlab.lib.units.inch, 10.5 * reportlab.lib.units.inch, title) #creates title

    canvas.setFont('Helvetica',10) #header and footer font

    #creates header
    canvas.drawCentredString(4.135 * reportlab.lib.units.inch, 0.75 * reportlab.lib.units.inch,
                             'Report generated by ' + Author + ' at ' + TimeStamp + ' - Page %d' % canvas.getPageNumber())

    #creates footer
    canvas.drawCentredString(4.135 * reportlab.lib.units.inch, 11.00 * reportlab.lib.units.inch,
                            'Environmental Services')

    #draw a border
    canvas.setStrokeColorRGB(1,0,0)
    canvas.setLineWidth(5)
    canvas.line(0.8 * reportlab.lib.units.inch, reportlab.lib.units.inch, 0.8 * reportlab.lib.units.inch, 10.75 * reportlab.lib.units.inch)

    #reset carefully afterwards
    canvas.setLineWidth(1)
    canvas.setStrokeColorRGB(0,0,0)

编辑编号2 *

完全追溯就在这里

Traceback (most recent call last):
  File "C:\tools\LegionellaTool.py", line 613, in <module>
    createReport(selectedCoolingTowers, Report_outputs_folder, dbo_COLGIS, openPDF)

  File "C:\tools\LegionellaTool.py", line 120, in createReport

    c.drawString(reportlab.lib.units.inch, 10.5 * reportlab.lib.units.inch, title) #creates title

  File "c:\python26\arcgis10.0\lib\site-packages\reportlab\pdfgen\canvas.py", line 1481, in drawString

    t.textLine(text)

  File "c:\python26\arcgis10.0\lib\site-packages\reportlab\pdfgen\textobject.py", line 426, in textLine

    self._code.append('%s T*' % self._formatText(text))
  File "c:\python26\arcgis10.0\lib\site-packages\reportlab\pdfgen\textobject.py", line 393, in _formatText

    for f, t in pdfmetrics.unicode2T1(text,[font]+font.substitutionFonts):
SystemError: ..\Objects\moduleobject.c:50: bad argument to internal function

<type 'exceptions.SystemExit'>: 1

谢谢

Answer 1

根据我的经验，ReportLab的间歇性错误通常是由于在尝试渲染可能包含“奇怪”内容的文本时出现的问题，例如字符集的意外字符或空值。查看代码我没有发现任何明显会导致问题的内容，但您可能希望查看某些内容包含意外值的可能性。

特别是，我将查看处理selContact的代码，看看它的任何属性是否意外为空，或者只是不是可能导致错误的字符串。

如果没有完整的堆栈跟踪，很难说出更具体的内容。

<强> ETA

基于现在提供的堆栈跟踪，看起来问题必须是您正在尝试绘制的title变量或者用于绘制字符串的字体。看看你的代码，我没有注意到任何问题，并且没有任何迹象表明代码中引发错误的部分间歇性问题。

Answer 2

这条消息让我疯狂了过去几周，我终于想出了导致这个错误的两件事以及如何解决这些错误：

正如G Gordon Worley III建议的那样，如果您尝试使用不正确的元素构建报告，则可能会出现。

修复：查找哪个元素已损坏或在ArcGIS外部调试您的程序，您将收到更明确的错误消息。
如果您的Python安装有点混乱，可能会出现。对我来说发生的事情是我将ReportLab文件包含在与我的脚本相同的文件夹中，以便于分发。但我以前也在我的Python安装文件夹中安装了ReportLab。不知何故，这让ArcGIS感到困惑。

修复：删除Python ?? /（ArcGIS ??。？/）Lib / site-packages / reportlab文件夹，以便您的脚本只有一个库选项。

我希望这会对某人有所帮助。

python中内部函数错误的错误参数

2 个答案: