python 中的True和1及False和0是可以等價比較及是否是bool類型
1、True和1及False和0是可以等價比較
[[email protected] root]# cat test_true_false.py
ok=0
if ok:
print ok
ok=1
if ok:
print ok
ok=True
if ok:
print ok
ok=False
if ok:
print ok
print '*'*20
ok=0
if ok == False:
print ok
ok=1
if ok == True:
print ok
ok=False
if ok ==0:
print ok
ok=True
if ok == 1:
print ok
[[email protected] root]#
[[email protected] root]# python test_true_false.py
1
True
********************
0
1
False
True
[[email protected] root]#
2、判斷 1、0和True、False 是否是bool類型
>>> a=0
>>> type(a)
<type 'int'>
>>>
>>> type(a) is bool
False
>>>
>>> a=1
>>>
>>> type(a)
<type 'int'>
>>>
>>> type(a) is bool
False
>>>
>>>
>>> type(1)
<type 'int'>
>>> type(1) is bool
False
>>>
>>> a=True
>>> type(a)
<type 'bool'>
>>>
>>> type(a) is bool
True
>>>
>>> a=False
>>>
>>> type(a)
<type 'bool'>
>>> type(a) is bool
True
>>>