1 if语句
cars = ['audi','bmw','subaru','toyota']
for car in cars:
if car == 'bmw':
print(car.upper())
else:
print(car.title())
2 使用 and 或 or 检查多个条件
>>> age_0 = 22
>>> age_1 = 18
>>> age_0 >= 21 and age_1 >= 21
False
>>> age_0 >= 21 or age_1 >= 21
True
3 检查特定值是否包含在列表中,in 或not in
>>> requested_toppings = ['mushrooms','onions','pineapple']
>>> 'mushrooms' in requested_toppings
True
>>> 'mushrooms' not in requested_toppings
False
4 if - elif - else 语句
age = 12
if age < 4:
print("Your admission cost is $0.")
elif age < 18:
print("Your admission cost is $5.")
else:
print("Your admission cost is $10.")
这篇博客介绍了Python编程中的条件语句,包括if-elif-else结构,以及如何使用and和or检查多个条件。同时展示了如何利用in和not in操作符检查列表中是否存在特定元素。此外,还通过示例解释了如何遍历列表并根据条件打印不同格式的元素。
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