摘要：def is_valid(y): if len(y)==18: y1=y[:17] if y1.isdigit(): for j in y: y2=[] y2.append(j) m=['1','2','3','4','5','6','7','8','9','X'] if y[-1] in m: r 阅读全文

摘要：#tesk3.py with open('data3.txt','r+', encoding='UTF-8') as f: Z=[] Y=[] x=[] for i in f: x.append(i.strip('\n')) newx=x[1:11] for i in newx: y=float(i 阅读全文

摘要：print(sum) sum = 42 print(sum) def inc(n): sum = n + 1 print(sum) return sum sum = inc(7) + inc(7) print(sum) 不是 第一次：Build-in 第二次：Global 第三次：Local 第四次 阅读全文