python中逻辑与或（and、or）和按位与或异或（&、|、^）区别

3 & 2
=0111 & 0010
=0010
=2

&：0&0=0; 0&1=0; 1&0=0; 1&1=1。
|：0|0=0; 0|1=1; 1|0=1; 1|1=1。
^：0^0=0; 0^1=1; 1^0=1; 1^1=0。

def print_1():
 print('已经运行这里了')
a = 99 and 3==1 and print_1()
print(a)

def print_1():
 print('已经运行这里了')
a = 99 and 3==3 and print_1() and False
print(a)

def print_1():
 print('已经运行这里了')
 return 1==1
a = 99 and 3==3 and print_1() and 99
print(a)

def print_1():
 print('已经运行这里了')
b = 99==1 or 3==3 or print_1()
print(b)

def print_1():
 print('已经运行这里了')
b = 99==1 or 3==1 or print_1() or 99
print(b)

def print_1():
 print('已经运行这里了')
b = 99==1 or 3==1 or print_1() or False
print(b)