Re: [Tutor] Problem recognizing '{' character?
Thanks a ton. For the record I did read the 'command' module help page, but
must have skipped over the 'Platforms: Unix' and 'Deprecated' parts. I
successfully got it to work with the subprocess module, but I really
appreciate you filling out the rest with the sys.stderr.write(stderrdata). I
certainly would have stumbled over that.
-BJH
On Mon, Mar 28, 2011 at 8:12 PM, Ben Hunter wrote:
> Hi,
>
> I'm completing the Python lessons on YouTube that Google posted. At the end
> of section 2 of day 2, there is a task to identify files then put them in a
> zip file in any directory. The code is from the 'solution' folder, so it's
> not something I wrote. I suspect I have a problem with PATHS or environment
> variables. I'm new to programming in something as advanced as Python, but I
> do okay with VBA - so I just feel like there's a setting up issue somewhere.
> I'm on Windows 7, tried running this in Idle and from the command line.
>
> These two work perfectly.
>
> def get_special_paths(dirname):
> result = []
> paths = os.listdir(dirname) # list of paths in that dir
> for fname in paths:
> match = re.search(r'__(\w+)__', fname)
> if match:
> result.append(os.path.abspath(os.path.join(dirname, fname)))
> return result
>
>
> def copy_to(paths, to_dir):
> if not os.path.exists(to_dir):
> os.mkdir(to_dir)
> for path in paths:
> fname = os.path.basename(path)
> shutil.copy(path, os.path.join(to_dir, fname))
>
> This third one does not.
>
> def zip_to(paths, zipfile):
> """Zip up all of the given files into a new zip file with the given
> name."""
> cmd = 'zip -j ' + zipfile + ' ' + ' '.join(paths)
> print "Command I'm going to do:" + cmd
> (status, output) = commands.getstatusoutput(cmd)
> # If command had a problem (status is non-zero),
> # print its output to stderr and exit.
> if status:
> sys.stderr.write(output)
> sys.exit(1)
>
> My command is this: >>> copyspecial.zip_to(paths, 'zippy')
>
> But something goes wrong and it spits this out:
> '{' is not recognized as an internal or external command,
> operable program or batch file.
>
>
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Re: [Tutor] Problem recognizing '{' character?
On 29/03/2011 09:41, Peter Otten wrote: Ben Hunter wrote: Hi, I'm completing the Python lessons on YouTube that Google posted. At the end of section 2 of day 2, there is a task to identify files then put them in a zip file in any directory. The code is from the 'solution' folder, so it's not something I wrote. I suspect I have a problem with PATHS or environment variables. I'm new to programming in something as advanced as Python, but I do okay with VBA - so I just feel like there's a setting up issue somewhere. I'm on Windows 7, tried running this in Idle and from the command line. The commands module used by zip_to() is an unfortunate choice for a tutorial because it is supposed to work with unix shells only. It's also unfortunate that an issue has been outstanding here for a while: http://bugs.python.org/issue10197 It's one of those which seems simple to fix but which spawns a thousand discussions... TJG ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Problem recognizing '{' character?
Ben Hunter wrote: > Hi, > > I'm completing the Python lessons on YouTube that Google posted. At the > end of section 2 of day 2, there is a task to identify files then put them > in a zip file in any directory. The code is from the 'solution' folder, so > it's not something I wrote. I suspect I have a problem with PATHS or > environment variables. I'm new to programming in something as advanced as > Python, but I do okay with VBA - so I just feel like there's a setting up > issue somewhere. I'm on Windows 7, tried running this in Idle and from the > command line. The commands module used by zip_to() is an unfortunate choice for a tutorial because it is supposed to work with unix shells only. > def zip_to(paths, zipfile): > """Zip up all of the given files into a new zip file with the given > name.""" > cmd = 'zip -j ' + zipfile + ' ' + ' '.join(paths) > print "Command I'm going to do:" + cmd > (status, output) = commands.getstatusoutput(cmd) > # If command had a problem (status is non-zero), > # print its output to stderr and exit. > if status: > sys.stderr.write(output) > sys.exit(1) You can either try to install Cygwin to run your script unchanged or rewrite the above function to work with subprocess import sys from subprocess import Popen, PIPE def zip_to(paths, zipfile): command = ["zip", "-j", zipfile] command.extend(paths) process = Popen(command, stdout=PIPE, stderr=PIPE) stdoutdata, stderrdata = process.communicate() if process.returncode: sys.stdout.write(stdoutdata) sys.stderr.write(stderrdata) sys.exit(1) You'll still need a zip.exe on your system. If you're ambitious, have a look at http://docs.python.org/library/zipfile.html a library that allows you to create zipfiles in python without the help of an external program. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Problem recognizing '{' character?
Hi,
I'm completing the Python lessons on YouTube that Google posted. At the end
of section 2 of day 2, there is a task to identify files then put them in a
zip file in any directory. The code is from the 'solution' folder, so it's
not something I wrote. I suspect I have a problem with PATHS or environment
variables. I'm new to programming in something as advanced as Python, but I
do okay with VBA - so I just feel like there's a setting up issue somewhere.
I'm on Windows 7, tried running this in Idle and from the command line.
These two work perfectly.
def get_special_paths(dirname):
result = []
paths = os.listdir(dirname) # list of paths in that dir
for fname in paths:
match = re.search(r'__(\w+)__', fname)
if match:
result.append(os.path.abspath(os.path.join(dirname, fname)))
return result
def copy_to(paths, to_dir):
if not os.path.exists(to_dir):
os.mkdir(to_dir)
for path in paths:
fname = os.path.basename(path)
shutil.copy(path, os.path.join(to_dir, fname))
This third one does not.
def zip_to(paths, zipfile):
"""Zip up all of the given files into a new zip file with the given
name."""
cmd = 'zip -j ' + zipfile + ' ' + ' '.join(paths)
print "Command I'm going to do:" + cmd
(status, output) = commands.getstatusoutput(cmd)
# If command had a problem (status is non-zero),
# print its output to stderr and exit.
if status:
sys.stderr.write(output)
sys.exit(1)
My command is this: >>> copyspecial.zip_to(paths, 'zippy')
But something goes wrong and it spits this out:
'{' is not recognized as an internal or external command,
operable program or batch file.
___
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