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首先请注意，我是 Python 的初学者。在 ArcGIS 环境中学习当前处理 Python 的课程。我当前的项目是一个简单的程序，用于创建文件并将其他文件复制到其中。然而，部分任务是让 print 语句在它发生时说明正在发生的事情，例如最终的 print 语句应该如下所示：

处理面要素类....

处理要素类 >> 建筑

字段信息：

 etc.

这是我应该这样做的一小部分代码：

pointlist = arcpy.ListFeatureClasses("*", "Point")
print "Processing Point FeatureClasses..."
for pl in pointlist:
    arcpy.MakeFeatureLayer_management(pl, "Point" + 1)
    pointlayer = arcpy.SelectLayerByLocation_management(pl, "intersect", MapGridID)
    pointcount = int(arcpy.GetCount_management(pointlayer).getOutput(0))
    if pointcount >= 1:
        arcpy.CopyFeatures_management(pointlayer, OutputGDB)
    for pl in pointlist:
        print "Processing FeatureClass:" + pl
        pointfield = arcpy.ListFields()
        for pf in pointfield:
            print "Field Name:" + pf

出现的问题是它打印了第一个打印语句“Processing Point FeatureClasses”，但不执行其余部分，然后跳到我的下一部分代码并执行它。知道为什么吗？抱歉，如果我的格式或措辞不正确/听起来很奇怪。谢谢你。

编辑

我也给我的教授发了电子邮件，寻求一些指导，他写回了我上面代码块的一个稍微编辑过的版本。我现在可以打印除点场打印语句之外的所有内容，这些语句现在被跳过了。这是代码：

pointlist = arcpy.ListFeatureClasses("*", "Point")
print "Processing Point FeatureClasses...\n"
i = 1
for pl in pointlist:
    print "Processing FeatureClass: " + pl
    featlayernamepoint = "Point" + str(i)
    arcpy.MakeFeatureLayer_management(pl, featlayernamepoint)
    arcpy.SelectLayerByLocation_management(featlayernamepoint, "intersect",   featurelayerMG2)
    pointcount = int(arcpy.GetCount_management(featlayernamepoint).getOutput(0))
    if pointcount >= 1:
        arcpy.CopyFeatures_management(featlayernamepoint, OutputGDB)
        pointfield = arcpy.ListFields(featlayernamepoint)
        for pf in pointfield:
            print "Field Name: " + pf.name
    i += 1
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1 回答 1

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您忘记将点传递给 ListFields()

pointfield = arcpy.ListFields(pl)
for pf in pointfield:
      print "Field Name:" + pf.name
于 2013-02-17T10:40:55.990 回答