摘要：class StudentDoc: def_ init_ (self,n,a,m,s): self. n=n self._ aa self._ mm self._ s=s def set(self,s): self._ S=s def date(self): print(f'#%: fself._ 阅读全文

摘要：with open('data1_1.txt', 'r', encoding = 'utf-8') as f: data=f.readlines() n = 0 for line in data: if line.strip('\n') == '': continue n+=1 print(f'共{ 阅读全文