1.输入一个数值，判断是否为正数，负数，小数，以及字符串
1 import re 2 3 4 def is_number(num): 5 pattern = re.compile(r\'^[-+]?[-0-9]\d*\.\d*|[-+]?\.?[0-9]\d*$\') 6 result = pattern.match(num) 7 if result: 8 return True 9 else: 10 return False 11 12 13 while True: 14 i = input("Enter Number:") 15 if i == \'q\': 16 print(\'-----End----\') 17 break 18 elif is_number(i): 19 if type(eval(i)) == int: 20 i = int(i) 21 if i > 0: 22 print(\'{} is positive number\'.format(i)) 23 elif i < 0: 24 print(\'{} is negative number\'.format(i)) 25 elif i == 0: 26 print(\'{} is Zero\'.format(i)) 27 else: 28 print(\'{} is decimals\'.format(i)) 29 else: 30 print(\'{} is a string\'.format(i))
2:输入五位数组成一个列表，并求和
1 lists = [] 2 i = 0 3 while i < 5: 4 list_num = input(\'enter number:\') 5 if list_num == \'q\': 6 break 7 else: 8 list_num = int(list_num) 9 lists.append(list_num) 10 print(lists) 11 sum_num = sum(lists) 12 print(\'sum:{}\'.format(sum_num)) 13 i += 1