import arcpy
from arcpy import env,da,mapping

#设置工作空间
env.workspace = r'D:\geoData\shps'
#输入图层
infe = 'test_mp'
shp  = 'test_mp.shp'
#设置arcmap文档
_mxd = r'D:\geoData\shps\test.mxd'
#设置值所在字段
field = 'OBJECTID'
#设置图片输出路径
opath = r'D:\geoData\shps\pic'

#定义出图函数
def func(shp,infeature,smxd,ifield,op):
    #游标打开要素图层，仅取出需要的字段
    with da.SearchCursor(shp,ifield) as se_cursor:
        for se_row in se_cursor:
            try:
                mxd = mapping.MapDocument(smxd)
                df = mapping.ListDataFrames(mxd)[0]
                lyr = mapping.ListLayers(mxd,infeature,df)[0]
                fvalue = se_row[0]
                arcpy.SelectLayerByAttribute_management(lyr,'NEW_SELECTION',"%s = %s"%(ifield,fvalue))
                df.zoomToSelectedFeatures()
#                 df.scale = 300
                ofile = '%s\\pic%d.JPG'%(op,fvalue)
                print(ofile)
                mapping.ExportToJPEG(mxd,ofile)
                del mxd
            except:
                print('Something goes wrong')
#调用定义的函数
func(shp,infe,_mxd,field,opath)