05 2022 档案

摘要：1 def is_valid(x): 2 ls=[str(i) for i in range(0,10)] 3 ls.append('X') 4 if len(x)<18: 5 return False 6 for a in range(len(x)): 7 if x[a] not in ls: 8 阅读全文

摘要：1 with open('data3.txt','r',encoding='utf-8')as f: 2 data=f.read().strip().split('\n') 3 data[0]='原始数据'+'\t'+'四舍五入后数据'+'\n' 4 for i in range(1,len(dat 阅读全文

摘要：1 print(sum) 2 sum = 42 3 print(sum) 4 def inc(n): 5 sum = n+1 6 print(sum) 7 return sum 8 sum = inc(7) + inc(7) 9 print(sum) 1.Built-in 2.Global 3.Lo 阅读全文