Python-For循环问题

我试图创建一个循环，遍历~3000.xml文件，搜索特定行，并打印成一个txt文件

我可以在一个xml上使用的原始代码是：

my_file = open(r'C:\temp\20160309_test_xml\out.txt', 'w')

with open(r'C:\temp\20160309_test_xml\test.xml', 'r') as file:
    for name, lines in enumerate(file, 1):
        if "OBJNAM" in lines:
            my_file.write(file.next())
with open(r'C:\temp\20160309_test_xml\test.xml', 'r') as file:
    for number,  line in enumerate(file, 1):
        if "srfres" in line:
            my_file.write(file.next())
file.close()

我已尝试为此创建循环，但输出txt打印为空白：

import glob
import os

path = r'C:\temp\test_xml'
xml_directory = os.path.join(path, '*.xml')
xml_list = glob.glob(xml_directory)
my_file = open(r'C:\temp\20160309_test_xml\out.txt', 'w')

for xml in xml_list:
    for name, lines in enumerate(xml, 1):
        if "OBJNAM" in lines:
            my_file.write(file.next())
for xml in xml_list:
    for number,  line in enumerate(xml, 1):
        if "srfres" in line:
            my_file.write(xml.next())

my_file.close()
print

---

或者你可以试着理解列表

[(name,lines) for name,lines in enumerate(xml_list)]

---

看起来您并没有在循环中打开文件，而是在路径上迭代

关于您的代码，我有一些建议：

您可以像这样迭代文件行：

with open(path, 'r') as file:
    for line in file:
        print line

---

另外，在处理xml文件时，也许可以使用

xml

lib

看起来你没有打开所有文件。什么是.next（），为什么要使用它？您是否应该使用“lines”变量？我正在使用.next（）在我正在搜索的单词下方拉出一行，因为每个文本文件中都有相同的单词，但每次都不在同一行上，例如，我正在搜索OBJNAME以拉出属性名（值）：

<2014 HI1447 Blakeney Overfalls 1m CUBE（单独的行）可能与此相关：

import glob
import os

xmlDir = r'C:\temp\test_xml'
xmlFiles = glob.glob(os.path.join(xmlDir, "*.xml"))
outfilepath = r'C:\temp\20160309_test_xml\out.txt'
keywords = ['OBJNAM', 'srfres']

copy = False
with open(outfilepath, 'w') as outfile:
    for fpath in xmlFiles:
        with open(fpath) as infile:
            for line in infile:
                if copy: outfile.write(line)

                if any (w in line for w in keywords):
                    copy = True
                    continue
                else:
                    copy = False
                    continue

import glob
import os

xmlDir = r'C:\temp\test_xml'
xmlFiles = glob.glob(os.path.join(xmlDir, "*.xml"))
outfilepath = r'C:\temp\20160309_test_xml\out.txt'
keywords = ['OBJNAM', 'srfres']

copy = False
with open(outfilepath, 'w') as outfile:
    for fpath in xmlFiles:
        with open(fpath) as infile:
            for line in infile:
                if copy: outfile.write(line)

                if any (w in line for w in keywords):
                    copy = True
                    continue
                else:
                    copy = False
                    continue