Python声明的全局类列表正在创建错误：未定义的全局名称...未定义

Question

我在Python类的全球空间中宣布了列表。我将其导入另一个使用Arcpy的类，并且我会收到错误：未定义的全局名称'TargetFieldNames'。我尝试使用值（TargetFieldNames = ['junk']）初始化列表。我已经尝试将所有全局列表放入__ INIT __。时，当我评论targetFieldNames时，错误会切换到我的dbug = dbug（） line。

这是代码：

import arcpy
from dbug import DBug # My own debug class


class FieldMill:

    # Set up the class level stuffs
    baseFieldNames = []
    targetFieldNames = []
    fieldsToCorrect = []

    # Call in our own logger
    dBug = DBug()


    # Separate the list into two: the base (properly named) fields
    # and the target (suspectly named) fields.
    def make_cases_match( self, fieldList ):
        for f in fieldList:
            if not f.required:
                if f.name.endswith( '_1' ):
                    #baseFields.append( f )
                    strippedName = f.name.replace( '_1', "" )   # Can't match with '_1'
                    baseFieldNames.append( strippedName )
                else:
                    #targetField.append( f )
                    targetFieldNames.append( f.name )
        
            # These lines added for debug
        dBug.printMessage("\n##### HERE IS WHAT baseFieldNames GOT:")
        dBug.printMessage( baseFieldNames )
        dBug.printMessage("\n##### HERE IS WHAT targetFieldNames GOT:")
        dBug.printMessage( targetFieldNames )

Answer 1

我很确定使用自己应该解决您的问题，

这对您有用吗？

import arcpy
from dbug import DBug # My own debug class


class FieldMill:

    def __init__(self):
        # Set up the class level stuffs
        self.baseFieldNames = []
        self.targetFieldNames = []
        self.fieldsToCorrect = []

        # Call in our own logger
        self.dBug = DBug()


    # Separate the list into two: the base (properly named) fields
    # and the target (suspectly named) fields.
    def make_cases_match( self, fieldList ):
        for f in fieldList:
            if not f.required:
                if f.name.endswith( '_1' ):
                    #baseFields.append( f )
                    strippedName = f.name.replace( '_1', "" )   # Can't match with '_1'
                    self.baseFieldNames.append( strippedName )
                else:
                    #targetField.append( f )
                    self.targetFieldNames.append( f.name )
        
            # These lines added for debug
        self.dBug.printMessage("\n##### HERE IS WHAT baseFieldNames GOT:")
        self.dBug.printMessage( self.baseFieldNames )
        self.dBug.printMessage("\n##### HERE IS WHAT targetFieldNames GOT:")
        self.dBug.printMessage( self.targetFieldNames )