#条件测试
##特定值是否在列表中
character = ['a','b','c','d','e']
'a' in character
'f' not in character
#if-elif-else语句
ages = list(range(1,50))
aging=[]
for x in ages:
if x<=10:
aging.append('儿童')
elif x>10 and x<=25:
aging.append('青年')
elif x>25 and x<=40:
aging.append('中年')
else:
aging.append('老年')
print(ages)
print(aging)
#确认列表值不为空是很重要的
requested_toppings = []
if requested_toppings:
for requested_topping in requested_toppings:
print("Adding :"+requested_topping+".")
else:
print("Are you sure you want a plain pizza?")
[Python]《从入门到实践》第五章-if语句
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转载自blog.csdn.net/TOMOCAT/article/details/81096980
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