extract substring by regex from a text file
Hi, I'm facing the problem in the subject: - I have a text file that I need to parse for producing a specifical string (Json like) extracting some information (substring) in it; - I created regural expressions capable to locate these substrings in my txt file; now I don't know how to continue. What is the best way to locate some string in a file and output them (with print command or in another file)? Thx in advance -- http://mail.python.org/mailman/listinfo/python-list
Re: extract substring by regex from a text file
On Apr 15, 3:25 pm, Neil Cerutti wrote: > On 2010-04-15, Alessio wrote: > > > Hi, > > > I'm facing the problem in the subject: > > - I have a text file that I need to parse for producing a specifical Thank you, I forgot to say that I already solved. I used readlines() to read my text file, then with a for cicle I extract line by line the substrings I need by regular expressions (re.findall()) ciao > > string (Json like) extracting some information (substring) in it; > > - I created regural expressions capable to locate these substrings in > > my txt file; > > > now I don't know how to continue. What is the best way to locate some > > string in a file and output them (with print command or in another > > file)? > > grep > > Or: show your work. > > -- > Neil Cerutti -- http://mail.python.org/mailman/listinfo/python-list
Re: extract substring by regex from a text file
On Apr 17, 11:05 am, Peter Otten <__pete...@web.de> wrote: > > Just in case you didn't know: > > for line in instream: > ... > > looks better, uses less memory, and may be a tad faster than > > for line in instream.readlines(): > ... > > Peter Thanks for your suggestions, they are welcome... I'm at the beginning with python. I just changed my script to parse the file without readlines() -- http://mail.python.org/mailman/listinfo/python-list
How to distribute a Python app together with its dependencies?
Hi, I have to distribute a Python application which relies on an external library, and I'm not very fluent in this kind of stuff with Python (I come from the Java world where I would have used the Maven build tool to create an "assembly with dependencies" of all it is needed to run the app), so I was wondering if someone here could give me some suggestions :-) The external library is generally not present on the machines where I have to distribute my app, and the set of machines on which I have to distribute this application is not known a priori (it is just known they are Unix systems). In fact by means of SSH I will have to copy (and install) the app+library and make it runnable onto the specified destination(s). My question is: how would you do that? At the moment my current solution is to make a tarball of the sources of my app + the "distutils" archive of the external library, copy all into the target machine, decompress and install via distutils(*) the external library, setup some PYTHONPATH stuff on the destination machine, and finally be able to launch the application. (*) specifying a prefix into the user home, as I'm not root there So in the end I was wondering if there is a more elegant way of doing this because, as I said before, I'm not very experienced in these kind of tasks in Python. Thanks in advance for any suggestion or comment. Alessio Pace. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to distribute a Python app together with its dependencies?
On 1 Dic, 05:23, Lev Elbert <[EMAIL PROTECTED]> wrote: > If Python for Windows you can use Py2Exe package. It works very well > in simple cases and requires a few tweaks to make it recognize some > dependencies. As I was saying above, the destination machines are all Unix. Thank you anyway for your suggestion, I'll keep it in mind if I can to deploy on Windows too. -- Alessio Pace. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to distribute a Python app together with its dependencies?
On 1 Dic, 10:37, BlueBird <[EMAIL PROTECTED]> wrote: > Alessio Pace wrote: > > Hi, > > > I have to distribute a Python application which relies on an external > > library, and I'm not very fluent in this kind of stuff with Python (I > > come from the Java world where I would have used the Maven build tool > > to create an "assembly with dependencies" of all it is needed to run > > the app), so I was wondering if someone here could give me some > > suggestions :-) > > > The external library is generally not present on the machines where I > > have to distribute my app, and the set of machines on which I have to > > distribute this application is not known a priori (it is just known > > they are Unix systems). In fact by means of SSH I will have to copy > > (and install) the app+library and make it runnable onto the specified > > destination(s). > > I have never used it myself, but bbfreeze claims to create packaged > versions of an application, for windows and Unix : > > http://pypi.python.org/pypi/bbfreeze/0.95.2 > Thank you. What's the difference with "Freeze" shipped with Python, or with PyInstaller ? Do you have experiences with any of them? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to distribute a Python app together with its dependencies?
On 1 Dic, 10:37, BlueBird <[EMAIL PROTECTED]> wrote: > Alessio Pace wrote: > > Hi, > > > I have to distribute a Python application which relies on an external > > library, and I'm not very fluent in this kind of stuff with Python (I > > come from the Java world where I would have used the Maven build tool > > to create an "assembly with dependencies" of all it is needed to run > > the app), so I was wondering if someone here could give me some > > suggestions :-) > > > The external library is generally not present on the machines where I > > have to distribute my app, and the set of machines on which I have to > > distribute this application is not known a priori (it is just known > > they are Unix systems). In fact by means of SSH I will have to copy > > (and install) the app+library and make it runnable onto the specified > > destination(s). > > I have never used it myself, but bbfreeze claims to create packaged > versions of an application, for windows and Unix : > > http://pypi.python.org/pypi/bbfreeze/0.95.2 > Thank you. What's the difference with "Freeze" shipped with Python, or with PyInstaller ? Do you have experiences with any of them? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to distribute a Python app together with its dependencies?
On 1 Dic, 15:21, Mike Driscoll <[EMAIL PROTECTED]> wrote: > On Nov 30, 6:22 am, Alessio Pace <[EMAIL PROTECTED]> wrote: > > > > > Hi, > > > I have to distribute a Python application which relies on an external > > library, and I'm not very fluent in this kind of stuff with Python (I > > come from the Java world where I would have used the Maven build tool > > to create an "assembly with dependencies" of all it is needed to run > > the app), so I was wondering if someone here could give me some > > suggestions :-) > > > The external library is generally not present on the machines where I > > have to distribute my app, and the set of machines on which I have to > > distribute this application is not known a priori (it is just known > > they are Unix systems). In fact by means of SSH I will have to copy > > (and install) the app+library and make it runnable onto the specified > > destination(s). > > > My question is: how would you do that? At the moment my current > > solution is to make a tarball of the sources of my app + the > > "distutils" archive of the external library, copy all into the target > > machine, decompress and install via distutils(*) the external library, > > setup some PYTHONPATH stuff on the destination machine, and finally be > > able to launch the application. > > > (*) specifying a prefix into the user home, as I'm not root there > > > So in the end I was wondering if there is a more elegant way of doing > > this because, as I said before, I'm not very experienced in these kind > > of tasks in Python. > > > Thanks in advance for any suggestion or comment. > > > Alessio Pace. > > I recommend GUI2Exe, a nice wrapper to py2exe, py2app, PyInstaller, > cx_Freeze and bbFreeze: > > http://code.google.com/p/gui2exe/ > > I've only used the py2exe portion of the program, but it works great > and the developers behind the project are very responsive and helpful. > > Mike Hi all and thanks for the replies. Apparenlty I managed to make the standalone application with bbfreeze (used directly), I still have to tune a little bit how it can pack in it also classes which are loaded dynamically, and which from a static examination of the code are not found then... I'll try to give a look at GUI2Exe also, thank you for the suggestion. Regards, Alessio Pace. -- http://mail.python.org/mailman/listinfo/python-list
Portable (Linux/Mac/Win) way to get network interfaces names and their addresses?
Hi,
I'm wondering how could I get, possibly in a pure Python solution, the
list of network addresses on a machine and the IP address of each of
them.
In fact I came across recently on two solutions, one that is pure
Python but that works only on Linux:
#
def all_interfaces():
max_possible = 128 # arbitrary. raise if needed.
bytes = max_possible * 32
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
names = array.array('B', '\0' * bytes)
outbytes = struct.unpack('iL', fcntl.ioctl(
s.fileno(),
0x8912, # SIOCGIFCONF
struct.pack('iL', bytes, names.buffer_info()[0])
))[0]
namestr = names.tostring()
return [namestr[i:i+32].split('\0', 1)[0] for i in range(0,
outbytes, 32)]
def get_ip_address(ifname):
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
return socket.inet_ntoa(fcntl.ioctl(
s.fileno(),
0x8915, # SIOCGIFADDR
struct.pack('256s', ifname[:15])
)[20:24])
###
and one other instead that is in the "netifaces" package (=>
http://alastairs-place.net/netifaces/) which is written in C.
Thanks in advance for any suggestion.
--
Alessio Pace.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Land Of Lisp is out
On 28 Ott, 10:42, p...@informatimago.com (Pascal J. Bourguignon) wrote: > sthueb...@googlemail.com (Stefan Hübner) writes: > >> Would it be right to say that the only Lisp still in common use is the > >> Elisp > >> built into Emacs? > > > Clojure (http://clojure.org) is a Lisp on the JVM. It's gaining more and > > more traction. > > There are actually 2 REAL Lisp on the JVM: > > - abclhttp://common-lisp.net/project/armedbear/and > > - CLforJavahttp://www.clforjava.org Well, there are a few Scheme implementations too. Kawa is "famous" for having been used by Google as the basis for their App Inventor for Android. And I wouldn't define Clojure a "fake" Lisp. It has some aspects I don't like, but it is definitely in the Lisp family. Actually CLforJava as far as I know is missing crucial features (e.g. CLOS) and in some aspects is more tied to Java than Clojure. -- http://mail.python.org/mailman/listinfo/python-list
