the problem of import module

[fts2012]

follow the dive into python
-----------------------------------------------------------------

>>import sys
sys.path
sys.path.append('E:\achieve\book\diveintopytho n-pdfzh-cn-5.4b\diveintopythonzh-cn-5.4b\py')

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I append the filepath of <<dive into python>>'s examples into
sys.path,but
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>>sys.path

['C:\\Python25\\Lib\\idlelib', 'C:\\WINDOWS\\system32\\python25.zip',
'C:\\Python25\\DLLs', 'C:\\Python25\\lib', 'C:\\Python25\\lib\\plat-
win', 'C:\\Python25\\lib\\lib-tk', 'C:\\Python25', 'C:\\Python25\\lib\
\site-packages', 'E:\x07chieve\x08ook\\diveintopython-pdfzh-cn-5.4b\
\diveintopythonzh-cn-5.4b\\py']

>>import fileinfo#fileinfo is a module in the path

Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
import fileinfo
ImportError: No module named fileinfo

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Can anyone tell me the reason of the above and how to add paths to
python path except adding them in the enviroment path.
Thanks.

[Peter Otten]

ft*****@gmail.com wrote:

follow the dive into python
-----------------------------------------------------------------

>>>import sys
sys.path
sys.path.append('E

\achieve\book\diveintopython-pdfzh-cn-5.4b\diveintopythonzh-cn-5.4b\py')

-----------------------------------------------------------------
I append the filepath of <<dive into python>>'s examples into
sys.path,but
-----------------------------------------------------------------

>>>sys.path

['C:\\Python25\\Lib\\idlelib', 'C:\\WINDOWS\\system32\\python25.zip',
'C:\\Python25\\DLLs', 'C:\\Python25\\lib', 'C:\\Python25\\lib\\plat-
win', 'C:\\Python25\\lib\\lib-tk', 'C:\\Python25', 'C:\\Python25\\lib\
\site-packages', 'E:\x07chieve\x08ook\\diveintopython-pdfzh-cn-5.4b\
\diveintopythonzh-cn-5.4b\\py']

>>>import fileinfo#fileinfo is a module in the path

Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
import fileinfo
ImportError: No module named fileinfo

-----------------------------------------------------------------
Can anyone tell me the reason of the above and how to add paths to
python path except adding them in the enviroment path.
Thanks.

The path you append to sys.path is not properly escaped:

>>"E:\archive"

'E:\x07rchive' # \a has become the single character chr(7)

Use double backslashes or raw strings instead:

>>"E:\\archive"

'E:\\archive'

>>r"E:\archive"

'E:\\archive'

When you print it the extra backslash will be gone:

>>print "E:\\archive" # \\ is the escape sequence for the backslash

E:\archive

Peter