dbf文件使用python读取程序

• 使用python读取dbf

# -*- coding: utf-8 -*-
import struct,csv,datetime
class DBF_Operator():
    @staticmethod
    def SHHQ_dbf_reader(f):
        numrec, lenheader = struct.unpack(‘<xxxxLH22x‘, f.read(32))
        numfields = (lenheader - 33) // 32

        fields = []
        for fieldno in xrange(numfields):
            name, typ, size, deci = struct.unpack(‘<11sc4xBB14x‘, f.read(32))
            name = name.replace(‘\0‘, ‘‘)       # eliminate NULs from string
            fields.append((name, typ, size, deci))

        terminator = f.read(1)
        assert terminator == ‘\r‘

        fields.insert(0, (‘DeletionFlag‘, ‘C‘, 1, 0))
        fmt = ‘‘.join([‘%ds‘ % fieldinfo[2] for fieldinfo in fields])
        fmtsiz = struct.calcsize(fmt)
        result = []#(stock,S3)
        #suspend_result = []
        for i in xrange(numrec):
            record = struct.unpack(fmt, f.read(fmtsiz))
            flag = record[0]
            stock = record[1]
            if stock == "000000":
                pass
            elif stock[0] == ‘6‘ and flag == ‘ ‘:
                result.append((record[1],record[3]))
        return result

    @staticmethod
    def SZHQ_dbf_reader(f):
        numrec, lenheader = struct.unpack(‘<xxxxLH22x‘, f.read(32))
        numfields = (lenheader - 33) // 32

        fields = []
        for fieldno in xrange(numfields):
            name, typ, size, deci = struct.unpack(‘<11sc4xBB14x‘, f.read(32))
            name = name.replace(‘\0‘, ‘‘)       # eliminate NULs from string
            fields.append((name, typ, size, deci))

        terminator = f.read(1)
        assert terminator == ‘\r‘

        fields.insert(0, (‘DeletionFlag‘, ‘C‘, 1, 0))
        fmt = ‘‘.join([‘%ds‘ % fieldinfo[2] for fieldinfo in fields])
        fmtsiz = struct.calcsize(fmt)
        result = []#(stock,S3)
        for i in xrange(numrec):
            record = struct.unpack(fmt, f.read(fmtsiz))
            flag = record[0]
            stock = record[1]
            if stock == "000000":
                pass
            elif (stock[0] == ‘0‘ or stock[:3] == ‘300‘) and flag == ‘ ‘:
                result.append((record[1],record[3]))
        return result

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