有文本内容如下：
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fdsjhgjhg
fdshkjhk
Start
Good
Morning
Hello
World
End
dashjkhjk
dsfjkhk
|
我需要用Python实现——获取”Start”和”End”之间的内容并写入结果文件。
解决方法1：
with open('/path/to/input') as infile, open('/path/to/output', 'w') as outfile:
copy = False
for line in infile:
if line.strip() == "Start":
copy = True
elif line.strip() == "End":
copy = False
elif copy:
outfile.write(line)
for line in infile:
if line.strip() == "Start":
copy = True
elif line.strip() == "End":
copy = False
elif copy:
outfile.write(line)
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with
open
(
'/path/to/input'
)
as
infile
,
open
(
'/path/to/output'
,
'w'
)
as
outfile
:
copy
=
False
for
line
in
infile
:
if
line
.
strip
(
)
==
"Start"
:
copy
=
True
elif
line
.
strip
(
)
==
"End"
:
copy
=
False
elif
copy
:
outfile
.
write
(
line
)
|
解决方法2：
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with
open
(
'input.txt'
)
as
myfile
:
content
=
myfile
.
read
(
)
text
=
re
.
search
(
r
'Start\n.*?End'
,
content
,
re
.
DOTALL
)
.
group
(
)
with
open
(
"output.txt"
,
"w"
)
as
myfile2
:
myfile2
.
write
(
text
)
|
解决方法3：
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import
itertools
with
open
(
'input.txt'
,
'r'
)
as
f
,
open
(
'output.txt'
,
'w'
)
as
fout
:
while
True
:
it
=
itertools
.
dropwhile
(
lambda
line
:
line
.
strip
(
)
!=
'Start'
,
f
)
if
next
(
it
,
None
)
is
None
:
break
fout
.
writelines
(
itertools
.
takewhile
(
lambda
line
:
line
.
strip
(
)
!=
'End'
,
it
)
)
|
参考链接：
http://stackoverflow.com/questions/18865058/extract-values-between-two-strings-in-a-text-file-using-python
二、提取某两个字符串之间的内容（单行）
解决方法（字符串切片）：
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''
'
get content between str1 and str2 in str
'
''
def
getBetween
(
str
,
str1
,
str2
)
:
strOutput
=
str
[
str
.
find
(
str1
)
+
len
(
str1
)
:
str
.
find
(
str2
)
]
return
strOutput
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参考链接：
https://github.com/bfishadow/SBB
三、其它的实现方式
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sed
-
n
'/Start/,/End/p'
input
.
txt
|
grep
-
Ev
'(Start|End)'
sed
-
e
'1,/Start/d'
-
e
'/End/,$d'
input
.
txt
awk
/
Start
/
,
/
End
/
input
.
txt
|
grep
-
Ev
'(Start|End)'
awk
'/Start/{flag=1;next} /End/{flag=0} flag{ print }'
input
.
txt
awk
'/End/{flag=0} flag; /Start/{flag=1}'
input
.
txt
perl
-
lne
'print if((/Start/../End/) && !(/Start/||/End/))'
input
.
txt
|
搜索关键字：
- awk print line between
参考链接：
- http://www.unix.com/shell-programming-and-scripting/48676-how-print-only-lines-between-two-strings-using-awk.html
- https://nixtip.wordpress.com/2010/10/12/print-lines-between-two-patterns-the-awk-way/
- http://www.shellhacks.com/en/Using-SED-and-AWK-to-Print-Lines-Between-Two-Patterns
- http://stackoverflow.com/questions/17988756/how-to-select-lines-between-two-marker-patterns-which-may-occur-multiple-times-w
=EOF=