使用通配符“if .... in ..”语句

时间:2012-01-31 04:12:36

标签: python string arcgis arcpy

我试图在目录中查找文件,其中使用的文件名有时只是完整文件名的一部分。

所以

check_meta=os.listdir(currentPath)

给出

  

['ANZMeta.xsl','Benefited_Areas','divisons','紧急',   'Error_LOG.txt','hex.dbf','hex.shp','hex.shp_BaseMetadata.xml',   'hex.shx','Maintenance_Areas','Rates.mxd','Regulated_Parking',   'schema.ini','Service_Areas','Local_Govt.lnk的快捷方式','TAB',   'TRC.rar','trc_boundary.dbf','trc_boundary.kml','trc_boundary.prj',   'trc_boundary.sbn','trc_boundary.sbx','trc_boundary.shp',   'trc_boundary.shp.ATGIS29.1772.3444.sr.lock',   'trc_boundary.shp.ATGIS30.2668.2356.sr.lock','trc_boundary.shp.xml',   'trc_boundary.shx','trc_boundary_Metadata.xml.auto',   'trc_boundary_Polygon.dbf','trc_boundary_Polygon.prj',   'trc_boundary_Polygon.sbn','trc_boundary_Polygon.sbx',   'trc_boundary_Polygon.shp',   'trc_boundary_Polygon.shp.ATGIS29.1772.3444.sr.lock',   'trc_boundary_Polygon.shx','trc_boundary_polygon.xml',   'urbanlevy_bdy_region.dbf','Urbanlevy_bdy_region.prj',   'urbanlevy_bdy_region.shp','Urbanlevy_bdy_region.shp.xml',   'urbanlevy_bdy_region.shx','Urbanlevy_bdy_trc.dbf',   “Urbanlevy_bdy_trc。 prj','Urbanlevy_bdy_trc.sbn',   'urbanlevy_bdy_trc.sbx','Urbanlevy_bdy_trc.shp',   'urbanlevy_bdy_trc.shp.xml','Urbanlevy_bdy_trc.shx']

我想

existingXML=FileNm[:FileNm.find('.')]
if  existingXML+"*"+'.xml' in check_meta: # this is where the issue is
   print "exists"

所以有时使用的xml是Urbanlevy_bdy_trc.shp.xml而在其他地方它是Urbanlevy_bdy_trc.xml(无论哪个存在 - 注意不要简单地使用OR函数作为“.shp.xml”,因为有多个文件扩展名比如数据集将具有的tab,ecw等。有时相关的xml文件可能被称为Urbanlevy_bdy_trc_Metadata.shp.xml,所以关键是搜索扩展名为.xml的核心文件名“Urbanlevy_bdy_trc”

我该如何指定? Search and replace multiple lines in xml/text files using python

中提到了这个目的

完整代码

import os, xml, arcpy, shutil, datetime
from xml.etree import ElementTree as et 

path=os.getcwd()
RootDirectory=path
arcpy.env.workspace = path
Count=0

Generated_XMLs=RootDirectory+'\GeneratedXML_LOG.txt'
f = open(Generated_XMLs, 'a')
f.write("Log of Metadata Creation Process - Update: "+str(datetime.datetime.now())+"\n")
f.close()

for root, dirs, files in os.walk(RootDirectory, topdown=False):
    #print root, dirs
    for directory in dirs:
        currentPath=os.path.join(root,directory)
        os.chdir(currentPath)
        arcpy.env.workspace = currentPath
        print currentPath
#def Create_xml(currentPath):

        FileList = arcpy.ListFeatureClasses()
        zone="_Zone"

        for File in FileList:
            Count+=1
            FileDesc_obj = arcpy.Describe(File)
            FileNm=FileDesc_obj.file
            print FileNm

            check_meta=os.listdir(currentPath)
            existingXML=FileNm[:FileNm.find('.')]
            print "XML: "+existingXML
            print check_meta
            #if  existingXML+'.xml' in check_meta:
            if any(f.startswith(existingXML) and f.endswith('.xml') for f in check_meta):
                print "exists"
                newMetaFile=FileNm+"_2012Metadata.xml"
                shutil.copy2(FileNm+'.xml', newMetaFile)
            else:
                print "Does not exist"
                newMetaFile=FileNm+"_BaseMetadata.xml"
                shutil.copy2('L:\Data_Admin\QA\Metadata_python_toolset\Master_Metadata.xml', newMetaFile)
            tree=et.parse(newMetaFile)

            print "Processing: "+str(File)

            for node in tree.findall('.//title'):
                node.text = str(FileNm)
            for node in tree.findall('.//northbc'):
                node.text = str(FileDesc_obj.extent.YMax)
            for node in tree.findall('.//southbc'):
                node.text = str(FileDesc_obj.extent.YMin)
            for node in tree.findall('.//westbc'):
                node.text = str(FileDesc_obj.extent.XMin)
            for node in tree.findall('.//eastbc'):
                node.text = str(FileDesc_obj.extent.XMax)        
            for node in tree.findall('.//native/nondig/formname'):
                node.text = str(os.getcwd()+"\\"+File)
            for node in tree.findall('.//native/digform/formname'):
                node.text = str(FileDesc_obj.featureType)
            for node in tree.findall('.//avlform/nondig/formname'):
                node.text = str(FileDesc_obj.extension)
            for node in tree.findall('.//avlform/digform/formname'):
                node.text = str(float(os.path.getsize(File))/int(1024))+" KB"
            for node in tree.findall('.//theme'):
                node.text = str(FileDesc_obj.spatialReference.name +" ; EPSG: "+str(FileDesc_obj.spatialReference.factoryCode))
            print node.text
            projection_info=[]
            Zone=FileDesc_obj.spatialReference.name

            if "GCS" in str(FileDesc_obj.spatialReference.name):
                projection_info=[FileDesc_obj.spatialReference.GCSName, FileDesc_obj.spatialReference.angularUnitName, FileDesc_obj.spatialReference.datumName, FileDesc_obj.spatialReference.spheroidName]
                print "Geographic Coordinate system"
            else:
                projection_info=[FileDesc_obj.spatialReference.datumName, FileDesc_obj.spatialReference.spheroidName, FileDesc_obj.spatialReference.angularUnitName, Zone[Zone.rfind(zone)-3:]]
                print "Projected Coordinate system"
            x=0
            for node in tree.findall('.//spdom'):
                for node2 in node.findall('.//keyword'):
                    print node2.text
                    node2.text = str(projection_info[x])
                    print node2.text
                    x=x+1


            tree.write(newMetaFile)

            f = open(Generated_XMLs, 'a')
            f.write(str(Count)+": "+File+"; "+newMetaFile+"; "+currentPath+"\n")
            f.close()



    #        Create_xml(currentPath)

RESULT

3 个答案:

答案 0 :(得分:1)

为什么不直接使用:

searchtext = "sometext"
matching = [ f for f in os.listdir(currentPath) if f.startswith(searchtext) and ".xml" in f]

如果您想检查不同的扩展名,可以将其列出。

exts = (".xml", ".tab", ".shp")
matching = [ f for f in os.listdir(currentPath) if f.startswith(searchtext) and os.path.splitext(f)[-1] in exts]

当然你可以弄清楚正则表达式做同样的事情。

答案 1 :(得分:0)

尝试以下方法:

if any(f.startswith(existingXML) and f.endswith('.xml') for f in check_meta):
   print "exists"

any()内置函数将iterable作为参数,如果任何元素为true,则返回true。我们传递的参数是一个生成器表达式,它将为列表f.startswith(existingXML) and f.endswith('.xml')中的每个文件f生成值check_meta

正则表达式解决方案可能如下所示:

regex = re.compile(re.escape(existingXML) + '.*\.xml$')
if any(regex.match(f) for f in check_meta):
    print "exists"

如果您需要知道哪个条目实际匹配,请使用for循环:

for f in check_meta:
    if f.startswith(existingXML) and f.endswith('.xml'):
        print "exists, file name:", f

答案 2 :(得分:0)

import fnmatch, posixpath

existingXML   = posixpath.splitext(FileNm)[-1]
matchingFiles = fnmatch.filter(check_meta, existingXML + "*" + ".xml")

if not matchingFiles:
    raise IOError("no matching XML files")
elif len(matchingFiles) > 1:
    print "more than one matching file, using first"
    matchingFile = matchingFiles[0]
else:   # only one was found, just use it
    matchingFile = matchingFiles[0]
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