is a file open ?

[luis]

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?
Best regards

Luis

[John Machin]

luis wrote:

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?

¡ rtfm ! "files" is a list of fileNAMEs -- i.e. strings.
¿ How could you possibly imagine that your sample code would open a
file? What a design-nonsense that would be: instant complaints from folk
who wanted to do some further selection before opening (if they ever
wanted to open the files at all).
¿ Did you contemplate *trying* this code to see what happened ?
¡ Don't use "file" as a name; it shadows the built-in file function !

[Daniel Dittmar]

luis wrote:

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?

On Linux and some other Unixes, you can probably read the /proc filesystem.

On Windows, you'll probably get the quickest result by running
handle.exe (http://www.sysinternals.com/Utilities/Handle.html).

Either way, the information you'll get is restricted by your permissions.

Either information will get stale really fast, so it's not suitable if
your task is something like 'can I backup this directory or is someone
writing to a file?'

Daniel

[John Machin]

Daniel Dittmar wrote:

luis wrote:

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?

On Linux and some other Unixes, you can probably read the /proc filesystem.

On Windows, you'll probably get the quickest result by running
handle.exe (http://www.sysinternals.com/Utilities/Handle.html).

Either way, the information you'll get is restricted by your permissions.

Either information will get stale really fast, so it's not suitable if
your task is something like 'can I backup this directory or is someone
writing to a file?'

If that's what the OP had in mind, the question might have been better
phrased as "given the path to a file, how can I tell if it is currently
opened by another process/thread", and better directed to OS-specifc
newsgroup(s).

[luis]

John Machin wrote:

Daniel Dittmar wrote:

luis wrote:

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?

On Linux and some other Unixes, you can probably read the /proc
filesystem.

On Windows, you'll probably get the quickest result by running
handle.exe (http://www.sysinternals.com/Utilities/Handle.html).

Either way, the information you'll get is restricted by your permissions.

Either information will get stale really fast, so it's not suitable if
your task is something like 'can I backup this directory or is someone
writing to a file?'

If that's what the OP had in mind, the question might have been better
phrased as "given the path to a file, how can I tell if it is currently
opened by another process/thread", and better directed to OS-specifc
newsgroup(s).

there is a specific python function ?

[luis]

John Machin wrote:

Daniel Dittmar wrote:

luis wrote:

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?

On Linux and some other Unixes, you can probably read the /proc
filesystem.

On Windows, you'll probably get the quickest result by running
handle.exe (http://www.sysinternals.com/Utilities/Handle.html).

Either way, the information you'll get is restricted by your permissions.

Either information will get stale really fast, so it's not suitable if
your task is something like 'can I backup this directory or is someone
writing to a file?'

If that's what the OP had in mind, the question might have been better
phrased as "given the path to a file, how can I tell if it is currently
opened by another process/thread", and better directed to OS-specifc
newsgroup(s).

there is a specific python function ?

[John Machin]

luis wrote:

John Machin wrote:

Daniel Dittmar wrote:

luis wrote:

for root, dirs, files in os.walk(path):
for file in files:
# ¿ is opened ?


On Linux and some other Unixes, you can probably read the /proc
filesystem.

On Windows, you'll probably get the quickest result by running
handle.exe (http://www.sysinternals.com/Utilities/Handle.html).

Either way, the information you'll get is restricted by your
permissions.

Either information will get stale really fast, so it's not suitable
if your task is something like 'can I backup this directory or is
someone writing to a file?'

If that's what the OP had in mind, the question might have been better
phrased as "given the path to a file, how can I tell if it is
currently opened by another process/thread", and better directed to
OS-specifc newsgroup(s).

there is a specific python function ?

If you mean "is there a Python function that given a filename, returns
an indication of whether that file has been opened by another
process/thread, portably across different operating systems?" then the
answer is NO. This is what I meant by "the question might have been ...
better directed to OS-specifc newsgroup(s)". That is what you should
have inferred from Daniel's reply "On Linux ... probably ... On Windows
.... probably...".

If you mean something else, you might like to try rephrasing your question.