成果python编程系列

python编程系列上回习题讲模块面向对文件操练1!2看图，说jgnnq3foreachinalist:print什么是模块fromxxximportfromxxximportyyyaszzzh,g=yyy,zzzimportxxxb=xxx.yyy模块查找路site-模块运行方importimportcalcasCALCprintCALC.add(1,2)printCALC.sub(1,2)printCALC.var1defdefdefsub(a,b):returna-bvar1=importprintcalc.add(1,2)printcalc.sub(1,2)printcalc.var1fromcalcimport*printadd(1,2)printsub(1,2)printvar1pythonmm.py的输出ifif == print'Thisprogramisbeingrunbyprint'Iambeingimportedfromanother 函if == 包包是一 树，每 下都有一 .py文importfromP.Q.Mimportfoo;printfromP.QimportM;printimportP.Q.MasM;printpip安curlcurl-pythonget-pip安装

pipinstall pip卸载pipuninstall 类class #classdef (self,arg1,arg2,defmethod(self,arg1,arg2,defdef注：classmethod和staticmethod可以通过类和实例2种方式来调class"Awell-knowndatadef init(self):self.items=[]defpush(self,

#defpop(self):x=self.items[-delself.items[-1]returnxdef

#theskyisthe#whathappensifit’sreturnlen(self.items)==x= #-> # #->False #[1,"

#Boolean #-> # #->

'''Representsateacher.'''classSchoolMember(object):def (self,name,age):classSchoolMember(object):def (self,name,age):self.age=age lmy print'Salary:"%d"'%classdef (self,name,age,score): self.scroe=scores=Student('Swaroop',22, defrun(self,a):defrun(self,a):defdefclassdeff1(self,a):returna+1deff1(self,a):returna-1foriinprintdefstart(self,a):print‘start’,adefprocess(self,a):print‘process’,adefprint

#捕获所有异#只捕获特定的异#捕获异常和它的附加数#捕获任何列出的异 #如果没有异statements#alwaysraiseraiseIndexError("koutofraiseIndexError,"koutof打开open(filenamemodef=g=

#Openafileforwriting #Openafileforreading read([nbytes]),readline(),data=#allline=#asinglelines=#dataasalistof写入write(string), o ines([“af”,‘;afd’])list

seek(pos[, list1=data1={'a':[1,2.0,3,'c':None,'d':}pickle.dump(data1,output)infile=open('data.pkl','rb