摘要：def is_valid(id): if len(id) != 18: return False try: for i in id: if i == 'X': continue elif type(eval(i)) == int: continue else: return False except 阅读全文

摘要：task1with open('data3.txt','r',encoding='utf-8') as f1: data=f1.read().split('\n') x=[eval(i) for i in data[1:]] print(f'原始数据：\n{x}') y=[round(i) for 阅读全文

摘要：task1print(sum) sum = 42 print(sum) def inc(n): sum = n+1 print(sum) return sum sum = inc(7) + inc(7) print(sum) 不是一个变量名 line1 内置 line3 全局作用域 line7 局部 阅读全文