python实现简单文件读写函数

#! /usr/bin/python
# coding:utf-8
 
import json
import xlrd
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
 
 
class ObjectFileReadAndWrite(object):
 
 @classmethod
 def readXlsToDict(cls, xlsFile):
 '''
 读取xls文件生成dict
 '''
 data = xlrd.open_workbook(xlsFile)
 table = data.sheet_by_index(0)
 ret = []
 keys = table.row_values(0)
 for rowNum in range(table.nrows):
 oneRowValues = table.row_values(rowNum)
 if rowNum > 0:
 d = {}
 for colIdx, key in enumerate(keys):
  d[key] = oneRowValues[colIdx]
 ret.append(d)
 return ret
 
 @classmethod
 def readXlsToList(cls, xlsFile):
 '''
 读取xls文件生成list
 '''
 data = xlrd.open_workbook(xlsFile)
 table = data.sheet_by_index(0)
 ret = []
 for rowNum in range(table.nrows):
 oneRowValues = table.row_values(rowNum)
 ret.append(oneRowValues)
 return ret
 
 @classmethod
 def readTxt(cls, txtFile, sep):
 '''
 读取txt文件
 '''
 # with + open 可保证with语句执行完毕后同时关闭打开的文件句柄。
 ret = []
 with open(txtFile, "r") as f:
 for line in f.readlines():
 line = line.strip('\n') # 去掉换行符
 listInfo = line.split(sep) # 以 sep 分割成数组
 if listInfo:
  ret.append(listInfo)
 return ret
 
 @classmethod
 def writeToJson(cls, jsonFile, ret):
 '''
 写入json文件
 '''
 with open(jsonFile, 'w') as fp:
 json.dump(ret, fp, indent=2, sort_keys=True, encoding="utf-8", ensure_ascii=False)
 
 @classmethod
 def writeFromStr(cls, filePath, s):
 '''
 string写入文件
 '''
 with open(filePath, 'w') as fp:
 fp.write(s)
 
 @classmethod
 def writeFromList(cls, filePath, wList):
 '''
 list写入文件
 '''
 with open(filePath, 'w') as fp:
 fp.writelines(wList)
 
 
if __name__ == "__main__":
 obj = ObjectFileReadAndWrite()
 # xls
 ret = obj.readXlsToDict(xlsFile='xxx.xls')
 obj.writeToJson('xxx.json', ret)
 # txt
 ret2 = obj.readTxt(txtFile='result.txt', sep=" ")
 obj.writeToJson('result.json', ret2)

import sys
reload(sys)
sys.setdefaultencoding('utf-8')
 
 
# encoding="utf-8", ensure_ascii=False