Re: [Python-Dev] Obtaining short file path
If you want a short path name, you should use win32api.GetShortPathName().
Attempting to compute it yourself isn’t as straight forward as you think.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hartwell Bryan
Sent: 27 May 2008 08:00
To: python-dev@python.org
Subject: [Python-Dev] Obtaining short file path
Hi,
Purpose: obtaining the system (“short”) path from a full path
Background: File dialogs (visual studio) return a full path (e.g. f=“C:\this
path has spaces\thisfilenameislongerthan8char.txt”). If this value is provided
to Python, it will not recongize this as a file. In fact os.path.isfile(f)
doesn’t return false, it crashes. Likewise, when calling executables (from
Python) with files as arguments a short path is required. VB FileSystemObject
has the ShortPath method, while os.path and path (www.jorendorff.com) modules
do not (at least as far as my googling could determine). Why bother creating a
COM interface when you’re just going to pass as shell run-time arguments all
the values the server is better at computing?
System: Python 2.3; Windows XP
Sample Code:
import win32com.client
import time
import os,sys
import os.path
#-
def shortpath(x):
z=''
for y in x.split('\\'):
if len(y.split('.')[0])8:
if ('.' in y):
z=z+'\\'+y.split('.')[0][:6].upper()+'~1'+'.'+y.split('.')[1]
else:
z=z+'\\'+y[:6].upper()+'~1'
else:
z=z+'\\'+y
return z[1:]
#-
xlApp = win32com.client.Dispatch(Excel.Application)
xlBook = xlApp.ActiveWorkbook
savFile = str(sys.argv[1])
rawFile = str(xlBook.Sheets(Timestamp).TextBox2)
#print os.path.isfile(savFile)
r=shortpath(rawFile)
print r
try:
print os.path.isfile(r)
except:
print 'something rude'
time.sleep(7)
Notes: This code does not account for peer paths or files that share the first
8 characters (and file extension). I’m also aware that this is not the normal
means for submitting a “patch”, but in my job function I don’t see myself
regularly participating in python development (and I’m probably not savvy
enough) so the effort wasn’t worth it. However I still thought others might
benefit from what seems to be (to me) a fundamental path function. Do with it,
or ignore it, as you please.
Cheers,
Bryan Hartwell
This message is intended only for the use of the intended recipients, and it
may be privileged and confidential. If you are not the intended recipient, you
are hereby notified that any review, retransmission, conversion to hard copy,
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you are not the intended recipient, please notify me immediately by return
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Re: [Python-Dev] Obtaining short file path
Hartwell Bryan wrote:
Hi,
Purpose: obtaining the system (“short”) path from a full path
Background: File dialogs (visual studio) return a full path (e.g.
f=“C:\this path has spaces\thisfilenameislongerthan8char.txt”). If
this value is provided to Python, it will not recongize this as a
file. In fact os.path.isfile(f) doesn’t return false, it crashes.
Likewise, when calling executables (from Python) with files as
arguments a short path is required. VB FileSystemObject has the
ShortPath method, while os.path and path (www.jorendorff.com) modules
do not (at least as far as my googling could determine). Why bother
creating a COM interface when you’re just going to pass as shell
run-time arguments all the values the server is better at computing?
System: Python 2.3; Windows XP
Sample Code:
import win32com.client
import time
import os,sys
import os.path
#-
def shortpath(x):
z=''
for y in x.split('\\'):
if len(y.split('.')[0])8:
if ('.' in y):
z=z+'\\'+y.split('.')[0][:6].upper()+'~1'+'.'+y.split('.')[1]
else:
z=z+'\\'+y[:6].upper()+'~1'
else:
z=z+'\\'+y
return z[1:]
#-
xlApp = win32com.client.Dispatch(Excel.Application)
xlBook = xlApp.ActiveWorkbook
savFile = str(sys.argv[1])
rawFile = str(xlBook.Sheets(Timestamp).TextBox2)
#print os.path.isfile(savFile)
r=shortpath(rawFile)
print r
try:
print os.path.isfile(r)
except:
print 'something rude'
time.sleep(7)
Notes: This code does not account for peer paths or files that share
the first 8 characters (and file extension). I’m also aware that this
is not the normal means for submitting a “patch”, but in my job
function I don’t see myself regularly participating in python
development (and I’m probably not savvy enough) so the effort wasn’t
worth it. However I still thought others might benefit from what seems
to be (to me) a fundamental path function. Do with it, or ignore it,
as you please.
Cheers,
Bryan Hartwell
This message is intended only for the use of the intended recipients,
and it may be privileged and confidential. If you are not the intended
recipient, you are hereby notified that any review, retransmission,
conversion to hard copy, copying, circulation or other use of this
message is strictly prohibited. If you are not the intended recipient,
please notify me immediately by return e-mail, and delete this message
from your system.
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Why not win32api.GetShortPathName() and win32api.GetFullPathName()?
import os, win32api
path = C:\\this path has spaces\\thisfilehasmorethan8char.txt
short_path = win32api.GetShortPathName(path)
short_path
'C:\\THISPA~1\\THISFI~1.TXT'
os.path.isfile(short_path)
True
full_path = win32api.GetLongPathName(short_path)
full_path
'C:\\this path has spaces\\thisfilehasmorethan8char.txt'
os.path.isfile(full_path)
True
path == full_path
True
Ulli
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[Python-Dev] Obtaining short file path
Hi,
Purpose: obtaining the system (short) path from a full path
Background: File dialogs (visual studio) return a full path (e.g.
f=C:\this path has spaces\thisfilenameislongerthan8char.txt). If this
value is provided to Python, it will not recongize this as a file. In
fact os.path.isfile(f) doesn't return false, it crashes. Likewise, when
calling executables (from Python) with files as arguments a short path
is required. VB FileSystemObject has the ShortPath method, while os.path
and path (www.jorendorff.com) modules do not (at least as far as my
googling could determine). Why bother creating a COM interface when
you're just going to pass as shell run-time arguments all the values the
server is better at computing?
System: Python 2.3; Windows XP
Sample Code:
import win32com.client
import time
import os,sys
import os.path
#-
def shortpath(x):
z=''
for y in x.split('\\'):
if len(y.split('.')[0])8:
if ('.' in y):
z=z+'\\'+y.split('.')[0][:6].upper()+'~1'+'.'+y.split('.')[1]
else:
z=z+'\\'+y[:6].upper()+'~1'
else:
z=z+'\\'+y
return z[1:]
#-
xlApp = win32com.client.Dispatch(Excel.Application)
xlBook = xlApp.ActiveWorkbook
savFile = str(sys.argv[1])
rawFile = str(xlBook.Sheets(Timestamp).TextBox2)
#print os.path.isfile(savFile)
r=shortpath(rawFile)
print r
try:
print os.path.isfile(r)
except:
print 'something rude'
time.sleep(7)
Notes: This code does not account for peer paths or files that share the
first 8 characters (and file extension). I'm also aware that this is not
the normal means for submitting a patch, but in my job function I
don't see myself regularly participating in python development (and I'm
probably not savvy enough) so the effort wasn't worth it. However I
still thought others might benefit from what seems to be (to me) a
fundamental path function. Do with it, or ignore it, as you please.
Cheers,
Bryan Hartwell
This message is intended only for the use of the intended recipients, and it
may be privileged and confidential. If you are not the intended recipient, you
are hereby notified that any review, retransmission, conversion to hard copy,
copying, circulation or other use of this message is strictly prohibited. If
you are not the intended recipient, please notify me immediately by return
e-mail, and delete this message from your system.
___
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Unsubscribe:
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