python 细枝末节

>>> for i in range(4):
...     print i
... 
0
1
2
3
>>> for i in range(4):
...     print i,
... 
0 1 2 3

>>> a = "abcd    "
>>> chunk = a.split(" ")
>>> chunk
['abcd', '', '', '', '']
>>> len(a)
8
>>> b = "abcd"
>>> chunkb = b.split(' ')
>>> chunkb
['abcd']
>>> len(chunk)
5
>>> len(chunkb)
1

>>> a = "abcccc"

>>> a.split('c')

['ab', '', '', '', '']