Python 所有数据类型与布尔值的关系

# coding:utf-8

a_1 = 1
a_2 = 0

print(bool(a_1))
print(bool(a_2))

print(bool(not a_1))
print(bool(not a_2))

b_1 = '1'
b_2 = ''
print('----------')
print(bool(b_1))
print(bool(b_2))
print(bool(not b_1))
print(bool(not b_2))

c_1 = True
c_2 = False
print('-----------')
print(c_1)
print(c_2)

print(not c_1)
print(not c_2)