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python enumerateÓ÷¨

python cookbook  
Recipe 2.5. Counting Lines in a File
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enumerate
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for
i
in
range
(0
,
len
(list
)):

    print
i
,
list
[
i
]
 
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def
enumerate
(collection
):

    'Generates an indexed series: 
(0,coll[0]), (1,coll[1]) ...'
     
     i
=
0

     it
=
iter
(collection
)
     while
1
:

     yield
(i
,
it
.
next
())

     i
+=
1
 
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for
index
£¬
text
in
enumerate
(list
)):

   print
index
,
text
   ÔÚ
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count
=
len
(open
(thefilepath
,

rU

).
readlines
())
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Count
=
-
1

For
count
,
line
in
enumerate
(open
(thefilepath
,

rU

))£º

    Pass
Count
+=
1


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