本文实例讲述了Python实现的Excel文件读写类。分享给大家供大家参考。具体如下：
#coding=utf-8 ####################################################### #filename:ExcelRW.py #author:defias #date:2015-4-27 #function:read or write excel file ####################################################### import xlrd import xlwt import xlutils.copy import os.path class XlsEngine(): """ The XlsEngine is a class for excel operation Usage: xlseng = XlsEngine('filePath') """ def __init__(self,xlsname): """ define class variable """ self.xls_name = xlsname #file name self.xlrd_object = None #workbook object self.isopentrue = False #file open flag def open(self): """ open a xls file Usage: xlseng.open() """ try: self.xlrd_object = xlrd.open_workbook(self.xls_name) self.isopentrue = True print('[%s,%s].'%(self.isopentrue,self.xlrd_object)) except: self.isopentrue = False self.xlrd_object = None print('open %s failed.'%self.xls_name) def info(self): """ show xls file information Usage: xlseng.info() """ if self.isopentrue == True: for sheetname in self.xlrd_object.sheet_names(): worksheet = self.xlrd_object.sheet_by_name(sheetname) print('%s:(%d row,%d col).'%(sheetname,worksheet.nrows,worksheet.ncols)) else: print('file %s is not open.'%self.xls_name) def readcell(self,sheetname='sheet1',rown=0,coln=0): """ read file's a cell content Usage: xlseng.readcell('sheetname',rown,coln) """ try: if self.isopentrue == True: worksheets = self.xlrd_object.sheet_names() if sheetname not in worksheets: print('%s is not exit.'%sheetname) return False worksheet = self.xlrd_object.sheet_by_name(sheetname) cell = worksheet.cell_value(rown,coln) print('[file:%s,sheet:%s,row:%s,col:%s]:%s.'%(self.xls_name,sheetname,rown,coln,cell)) else: print('file %s is not open.'%self.xls_name) except: print('readcell is false! please check sheetn rown and coln is right.') def readrow(self,sheetname='sheet1',rown=0): """ read file's a row content Usage: xlseng.readrow('sheetname',rown) """ try: if self.isopentrue == True: worksheets = self.xlrd_object.sheet_names() if sheetname not in worksheets: print('%s is not exit.'%sheetname) return False worksheet = self.xlrd_object.sheet_by_name(sheetname) row = worksheet.row_values(rown) print('[file:%s,sheet:%s,row:%s]:%s.'%(self.xls_name,sheetname,rown,row)) else: print('file %s is not open.'%self.xls_name) except: print('readrow is false! please check sheetn rown is right.') def readcol(self,sheetname='sheet1',coln=0): """ read file's a col content Usage: xlseng.readcol('sheetname',coln) """ try: if self.isopentrue == True: worksheets = self.xlrd_object.sheet_names() if sheetname not in worksheets: print('%s is not exit.'%sheetname) return False worksheet = self.xlrd_object.sheet_by_name(sheetname) col = worksheet.col_values(coln) print('[file:%s,sheet:%s,col:%s]:%s.'%(self.xls_name,sheetname,coln,col)) else: print('file %s is not open.'%self.xls_name) except: print('readcol is false! please check sheetn coln is right.') def writecell(self,value='',sheetn=0,rown=0,coln=0): """ write a cell to file,other cell is not change Usage: xlseng.writecell('str',sheetn,rown，coln) """ try: if self.isopentrue == True: xlrd_objectc = xlutils.copy.copy(self.xlrd_object) worksheet = xlrd_objectc.get_sheet(sheetn) worksheet.write(rown,coln,value) xlrd_objectc.save(self.xls_name) print('writecell value:%s to [sheet:%s,row:%s,col:%s] is ture.'%(value,sheetn,rown,coln)) else: print('file %s is not open.'%self.xls_name) except: print('writecell is false! please check.') def writerow(self,values='',sheetn=0,rown=0,coln=0): """ write a row to file,other row and cell is not change Usage: xlseng.writerow('str1,str2,str3...strn',sheetn,rown.coln) """ try: if self.isopentrue == True: xlrd_objectc = xlutils.copy.copy(self.xlrd_object) worksheet = xlrd_objectc.get_sheet(sheetn) values = values.split(',') for value in values: worksheet.write(rown,coln,value) coln += 1 xlrd_objectc.save(self.xls_name) print('writerow values:%s to [sheet:%s,row:%s,col:%s] is ture.'%(values,sheetn,rown,coln)) else: print('file %s is not open.'%self.xls_name) except: print('writerow is false! please check.') def writecol(self,values='',sheetn=0,rown=0,coln=0): """ write a col to file,other col and cell is not change Usage: xlseng.writecol('str1,str2,str3...',sheetn,rown.coln) """ try: if self.isopentrue == True: xlrd_objectc = xlutils.copy.copy(self.xlrd_object) worksheet = xlrd_objectc.get_sheet(sheetn) values = values.split(',') for value in values: worksheet.write(rown,coln,value) rown += 1 xlrd_objectc.save(self.xls_name) print('writecol values:%s to [sheet:%s,row:%s,col:%s] is ture.'%(values,sheetn,rown,coln)) else: print('file %s is not open.'%self.xls_name) except: print('writecol is false! please check.') def filecreate(self,sheetnames='sheet1'): """ create a empty xlsfile Usage: filecreate('sheetname1,sheetname2...') """ try: if os.path.isfile(self.xls_name): print('%s is exit.'%self.xls_name) return False workbook = xlwt.Workbook() sheetnames = sheetnames.split(',') for sheetname in sheetnames: workbook.add_sheet(sheetname,cell_overwrite_ok=True) workbook.save(self.xls_name) print('%s is created.'%self.xls_name) except: print('filerator is false! please check.') def addsheet(self,sheetnames='sheet1'): """ add sheets to a exit xlsfile Usage: addsheet('sheetname1,sheetname2...') """ try: if self.isopentrue == True: worksheets = self.xlrd_object.sheet_names() xlrd_objectc = xlutils.copy.copy(self.xlrd_object) sheetnames = sheetnames.split(',') for sheetname in sheetnames: if sheetname in worksheets: print('%s is exit.'%sheetname) return False for sheetname in sheetnames: xlrd_objectc.add_sheet(sheetname,cell_overwrite_ok=True) xlrd_objectc.save(self.xls_name) print('addsheet is ture.') else: print("file %s is not open n"%self.xls_name) except: print('addsheet is false! please check.') """ def chgsheet(self,sheetn,values): def clear(self): """ if __name__ == '__main__': #初始化对象 xlseng = XlsEngine('E:CodePythontest2.xls') #新建文件，可以指定要新建的sheet页面名称，默认值新建sheet1 #print("nxlseng.filecreate():") #xlseng.filecreate('newesheet1,newesheet2,newesheet3') #打开文件 print("xlseng.open():") xlseng.open() #添加sheet页 print("nxlseng.addsheet():") xlseng.addsheet('addsheet1,addsheet2,addsheet3') #输出文件信息 print("nxlseng.info():") xlseng.info() #读取sheet1页第3行第3列单元格数据（默认读取sheet1页第1行第1列单元格数据） print("nxlseng.readcell():") xlseng.readcell('sheet1',2,2) #读取sheet1页第2行的数据（默认读取sheet1页第1行的数据） print("nxlseng.readrow():") xlseng.readrow('sheet1',1) #读取sheet1页第3列的数据（默认读取sheet1页第1列的数据） print("nxlseng.readcol():") xlseng.readcol('sheet1',2) #向第一个sheet页的第2行第4列写字符串数据‘I am writecell writed'(默认向第一个sheet页的第1行第1列写空字符串) print("nxlseng.writecell():") xlseng.writecell('I am writecell writed',0,1,3) #向第一个sheet页写一行数据，各列的值为‘rowstr1,rowstr2,rowstr3'，从第3行第4列开始写入(默认向第一个sheet页写一行数据，值为‘'，从第1行第1列开始写入) print("nxlseng.writerow():") xlseng.writerow('rowstr1,rowstr2,rowstr3',0,2,3) #向第一个sheet页写一列数据，各行的值为‘colstr1,colstr2,colstr3，colstr4'，从第4行第4列开始写入(默认向第一个sheet页写一列数据，值为‘'，从第1行第1列开始写入) print("nxlseng.writecol():") xlseng.writecol('colstr1,colstr2,colstr3,colstr4',0,3,3)
希望本文所述对大家的Python程序设计有所帮助。
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