# 布尔值为空值的情况     --->>  值都是False
s1 = ""         # 空字符串
print(bool(s1))
i = 0       # 数字等于0
print(bool(i))
t = ()      # 空元组
print(bool(t))
li = []     # 空列表
print(bool(li))
dic = {}    # 空字典
print(bool(dic))

# Nono
person = None
print(bool(person))