Python学習ノート-14.テクニック(Tips)

Code

   
     >>>>>> a = b = c = 1 
>>>>>> print a, b, c 
1 1 1 
>>>>>> (a, b, c) = range(3) 
>>>>>> print a, b, c 
0 1 2 
>>>>>> (a, b, c) = ("a", "b", "c") 
>>>>>> print a, b, c 
a b c 

Code

   
     >>>>>> (a, b, c) = ("a", "b", "c") 
>>>>>> print a, b, c 
a b c 
>>>>>> s = ("a", "b", "c") 
>>>>>> ",".join(s) 
'a,b,c' 
>>>>>> s = {1:"a", 2:"b", 3:"c"} 
>>>>>> ",".join(["%d:%s" % (k, v) for k, v in s.items()]) 
'1:a,2:b,3:c' 

Code

   
     >>>>>> def test(i): 
 if (0 < i < 10): 
 print "ok" 
 else: 
 print "" 
 
>>>>>> test(4) 
ok 
>>>>>> test(12) 
 
>>>>>> test(0) 
 

Code

   
     >>>>>> i = -10 
>>>>>> ++i 
-10 
>>>>>> i += 1 
>>>>>> i 
-9