NameError: 全局名称'getAllElements'未定义,在调用类函数时

2024-06-09 14:03:30 发布

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我可能忽略了一些东西,但是我得到了一个带有函数“getallegates”的类“parse”。在主脚本中,我使用

from parseXML import parse. 

那我就知道了

^{pr2}$

效果很好。但当我这么做的时候

print parseXML.parse(file).getAllElements()

我得到以下错误:

NameError: global name 'getAllElements' is not defined 

下面是代码。我哪里出错了?在

编辑:在注释后更改代码

class parse:
    # Constructor
    def __init__(self, file):
        # parse the xml file into a tree
        tree = xml.parse('/homes/ndeklein/test.featureXML')
        # Get the root node of the xml file
        self.rootElement = tree.getroot()
        # Set self.parent to rootElement, because the first element won't have a parent (because it is the root)
        self.parent = 'rootElement'
        # dictionary that contains the parent -> child relation
        self.parentChildDict = {}

    # Go recursively through all the elements in the xml file, starting at the choosen rootElement, until only leaves (elements that don't contain elements) are left
    # Return all the elements from the xml file
    def getAllElements(self):
        # if this is the first time this parent is seen:
        #     make elementDict with parent as key and child as value in a list
        if not self.parentChildDict.has_key(self.parent):
            self.parentChildDict[self.parent] = [self.rootElement]
        # else: add the child to the parent dictionary
        else:
            self.parentChildDict[self.parent].append(self.rootElement)
        for node in self.rootElement:
            # if the len of rootElement > 0 (there are more elements in the element):
            #    set self.parent to be node and recursively call getAllElements
            if len(self.rootElement) > 0:
                self.parent = node
                getAllElements()
        return self.parentChildDict

一。在

#!/usr/bin/env python

# author: ndeklein
# date: 08/02/2012
# function: calls out the script

import parseXML
import xml.etree.cElementTree as xml
import sys

#Parse XML directly from the file path
file = '/homes/ndeklein/EP-B1.featureXML'
# parse the xml file into a tree
print parseXML.parse(file).getAllElements()

Tags: theimportselfnodetreeparseisxml
2条回答

正如Praveen所暗示的,这是你的要义和通话风格。在

因为您以这种方式导入:

from foo import bar

您不需要(事实上也不应该)在调用中显式声明foo。在

^{pr2}$

不是

foo.bar.baz()

所以在你的情况下,试着打电话:

parse(file).getAllElements()

但您仍然需要在递归中处理裸调用: getAllegements()可能应该自我等位基因()

看起来parseXML不在本地命名空间中,因为您正在执行from parseXML import parse。您是否尝试直接导入parseXML并执行此操作?在

import parseXML 
parseXML.parse(file).getAllElements()

因为不能在方法内部调用getAllElements(),所以会得到NameError。它必须是self.getAllElements()。在

正如注释中提到的,代码中还有其他逻辑错误需要您更正。在

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