Python Combing Two Commands Post: 302948553

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Top Forums Shell Programming and Scripting Python Combing Two Commands Post 302948553 by wisecracker on Tuesday 30th of June 2015 11:22:57 AM

06-30-2015

Registered User

One liner Python code is not easy:-
OSX 10.7.5, running python 3.4 inside a default bash terminal.
This is why I have switched to shell scripting...

Code:

Last login: Tue Jun 30 15:55:49 on ttys000
AMIGA:barrywalker~> python3.4
Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 00:54:21) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> x=0
>>> while True:
...         print(x)
... 
0
0
0
0
.
.
0
0
^C0
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
KeyboardInterrupt
>>> x=0; while True: print(x)
  File "<stdin>", line 1
    x=0; while True: print(x)
             ^
SyntaxError: invalid syntax
>>> _

Notice the second attempt above as a 1 liner...
Yeah I know the assignment is not a statement, but neither are they in bash, but this is easy in the shell...
Miss out the assignment and put it on a separate line and it will run...

Code:

Last login: Tue Jun 30 15:55:49 on ttys000
AMIGA:barrywalker~> python3.4
Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 00:54:21) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> x=0
>>> while True: print(x)
... 
0
0
0
0
.
.
0
0
^C0
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
KeyboardInterrupt
>>> _

wisecracker

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LEARN ABOUT DEBIAN

dh_pysupport

DH_PYSUPPORT(1) 						  python-support						   DH_PYSUPPORT(1)

NAME

       dh_pysupport - use the python-support framework to handle Python modules

SYNOPSIS

       dh_pysupport [debhelper options] [-V X.Y] [-X item [...]] [-n] [module dirs ...]

DESCRIPTION

       dh_pysupport is a debhelper program that will scan your package, detect public modules in /usr/lib/pythonX.Y/site-packages, and move them
       to the shared Python modules location. It will generate appropriate postinst/prerm scripts to byte-compile modules installed there for all
       available python versions.

       It will also look for private Python modules and will byte-compile them with the current Python version. You may have to list the
       directories containing private Python modules.

       If a file named debian/pyversions exists, it is used to determine the python versions with which the package can work.

       Appropriate dependencies on python-support, python and pythonX.Y are put in ${python:Depends}.  The ${python:Versions} and
       ${python:Provides} optional substitution variables are made available as well.

OPTIONS

       module dirs
	   If your package installs private python modules in non-standard directories, you can make dh_pysupport check those directories by
	   passing their names on the command line. By default, it will check /usr/lib/$PACKAGE, /usr/share/$PACKAGE, /usr/lib/games/$PACKAGE and
	   /usr/share/games/$PACKAGE

       -n, --noscripts
	   Do not modify postinst/postrm scripts.

       -d  This option is deprecated.

       -V X.Y
	   Force private modules to be bytecompiled with the specific X.Y python version, regardless of the default python version on the system.

       -X item, --exclude=item
	   Exclude files that contain "item" anywhere in their filename from being taken into account to generate the python dependency. It also
	   excludes them from byte-compilation. You may use this option multiple times to build up a list of things to exclude.

CONFORMS TO

       Python policy as of 2006-08-10

SEE ALSO

       debhelper(7)

       This program is a part of python-support but is made to work with debhelper.

AUTHORS

       Josselin Mouette <joss@debian.org>, Raphael Hertzog <hertzog@debian.org>

1.0.15								    2012-06-30							   DH_PYSUPPORT(1)