作业06：数字类型

# (i.bit_length()) 求数值二进制最小的位数
i = 100
print(i.bit_length())

# bool Ture  False

# int ----> str
i = 1
s = str(i)

# str ---> int
s = '123'
i = int(s)

# int ---->  bool   0为False  非0为True
i = 3
b = bool(i)
print(b)

# bool ----> int   True 为 1    False 为 0

# str ----> bool
# s = '' ---> False  字符串为空就是False
# s = '0' ---> True  字符串非空就是True

's'
if 's':
    print('空s值')
else:
    pass

print('--------------------')

1
if 1:
    print('空1值')
else:
    pass