在使用Python進行業務開發的時候,需要將一些數據保存到本地文件存儲,方便後面進行數據分析展示。
透過查看需求可得出:需要將資料儲存為本機檔案(這就是涉及到檔案的操作),檔案操作屬於基礎內容,可以直接將常用的文件操作封裝為一個文件,後面使用直接呼叫即可。
#文件操作 import pickle #读取文件的所有内容(返回字符串) def ReadFileAllInfoAsStr(filePathAndName): try: with open(filePathAndName) as fileObj: fileInfos=fileObj.read() except FileNotFoundError: msg="很抱歉,文件【"+filePathAndName+"】不存在" print(msg) else: return fileInfos #读取文件的所有内容(返回列表) def ReadFileAllInfoAsList(filePathAndName): try: with open(filePathAndName) as fileObj: fileInfos=fileObj.readlines() except FileNotFoundError: msg="很抱歉,文件【"+filePathAndName+"】不存在" print(msg) else: return fileInfos #写入信息到文件(覆盖原有内容) def WriteInfo(needWriteInfo,filePathAndName): try: with open(filePathAndName,'wb') as fileObj: tmpBytes = bytes(needWriteInfo,'utf8') fileObj.write(tmpBytes) except Exception as e: print(e) #追加信息到文件中 def AppedInfo(needWriteInfo,filePathAndName): try: with open(filePathAndName,'ab') as fileObj: tmpBytes = bytes('\n'+needWriteInfo,'utf8') fileObj.write(tmpBytes) except Exception as e: print(e) #写入对象到文件 def WriteObj(needWriteInfo,filePathAndName): try: with open(filePathAndName,'wb') as fileObj: pickle.dump(needWriteInfo,fileObj) except Exception as e: print(e) #读取文件内容 def ReadObj(filePathAndName): try: with open(filePathAndName,'rb') as fileObj: tmpObj = pickle.load(fileObj) except Exception as e: print(e) else: return tmpObj import json import codecs #写入信息为json文件 def WritInfoAsJson(needWriteInfo,filePathAndName): try: with codecs.open(filePathAndName,'wb',encoding='utf-8') as fileObj: json.dump(needWriteInfo,fileObj) except Exception as e: print(e) #读取json文件信息 def ReadInfoToJson(filePathAndName): try: with codecs.open(filePathAndName,'rb',encoding='utf-8') as fileObj: tmpJson=json.load(fileObj) except Exception as e: print(e) else: return tmpJson
import FileOPC print('\n写入信息到文件中') filePathAndName2='file/test.txt' tmpstr="测试写入内容abcdefg" FileOPC.WriteInfo(tmpstr,filePathAndName2) print('\n将字符串转为字节1') tmpbytes1=str.encode('测试写入内容','utf-8') print(tmpbytes1) print('\n将字符串转为字节2') tmpbytes2=bytes('测试写入内容','utf-8') print(tmpbytes2) print('\n追加信息到文件中') FileOPC.AppedInfo('追加信息123',filePathAndName2) FileOPC.AppedInfo('测试追加信息456',filePathAndName2) print('\n切分字符串') splitStr="Alice in wonderlan 切割字符串,1,2,3,45,6" tmpSplit = splitStr.split(',') print(tmpSplit) print('\n写入对象信息到文件') filePathAndName3='file/test2.txt' FileOPC.WriteObj('测试写入对象信息112254799abcadshofdsaujfoduasfoj',filePathAndName3) print('\n读取文件对象') tmpObj = FileOPC.ReadObj(filePathAndName3) print(tmpObj) import json print('\n写入信息保存为Json文件') filePathAndName4='file/testJson.json' jsonDatas={"101001":[1,3,5,7,9],"101009":["张三","李四",'王五']} #jsonDatas=[2,3,5,7,11,13] FileOPC.WritInfoAsJson(jsonDatas,filePathAndName4) print('\n读取Json文件信息') tmpJson=FileOPC.ReadInfoToJson(filePathAndName4) print(tmpJson)
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