Packages and Binaries:

python-dev-is-python3

Starting with the Debian 11 (bullseye) and Ubuntu 20.04 LTS (focal) releases, all python packages use explicit python3 or python2 interpreter and do not use unversioned /usr/bin/python-config at all. Some third-party code is now predominantly python3 based, yet may use /usr/bin/python-config.

This is a convenience package which ships a symlink to point /usr/bin/python-config script at the current default python3. It may improve compatibility with other modern systems, whilst breaking some obsolete or 3rd-party software.

No packages may declare dependencies on this package.

Installed size: 13 KB
How to install: sudo apt install python-dev-is-python3

pdb

The Python debugger

root@kali:~# pdb -h
usage: pdb.py [-c command] ... [-m module | pyfile] [arg] ...

Debug the Python program given by pyfile. Alternatively,
an executable module or package to debug can be specified using
the -m switch.

Initial commands are read from .pdbrc files in your home directory
and in the current directory, if they exist.  Commands supplied with
-c are executed after commands from .pdbrc files.

To let the script run until an exception occurs, use "-c continue".
To let the script run up to a given line X in the debugged file, use
"-c 'until X'".

python-config

Output build options for python C/C++ extensions or embedding

root@kali:~# python-config --help
Usage: /usr/bin/python-config --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--help|--abiflags|--configdir|--embed

python-is-python3

Starting with the Debian 11 (bullseye) and Ubuntu 20.04 LTS (focal) releases, all python packages use explicit python3 or python2 interpreter and do not use unversioned /usr/bin/python at all. Some third-party code is now predominantly python3 based, yet may use /usr/bin/python.

This is a convenience package which ships a symlink to point the /usr/bin/python interpreter at the current default python3. It may improve compatibility with other modern systems, whilst breaking some obsolete or 3rd-party software.

No packages may declare dependencies on this package.

Installed size: 15 KB
How to install: sudo apt install python-is-python3

pydoc

The Python documentation tool

root@kali:~# pydoc -h
pydoc - the Python documentation tool

pydoc <name> ...
    Show text documentation on something.  <name> may be the name of a
    Python keyword, topic, function, module, or package, or a dotted
    reference to a class or function within a module or module in a
    package.  If <name> contains a '/', it is used as the path to a
    Python source file to document. If name is 'keywords', 'topics',
    or 'modules', a listing of these things is displayed.

pydoc -k <keyword>
    Search for a keyword in the synopsis lines of all available modules.

pydoc -n <hostname>
    Start an HTTP server with the given hostname (default: localhost).

pydoc -p <port>
    Start an HTTP server on the given port on the local machine.  Port
    number 0 can be used to get an arbitrary unused port.

pydoc -b
    Start an HTTP server on an arbitrary unused port and open a web browser
    to interactively browse documentation.  This option can be used in
    combination with -n and/or -p.

pydoc -w <name> ...
    Write out the HTML documentation for a module to a file in the current
    directory.  If <name> contains a '/', it is treated as a filename; if
    it names a directory, documentation is written for all the contents.

python

An interpreted, interactive, object-oriented programming language

root@kali:~# python -h
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Options (and corresponding environment variables):
-b     : issue warnings about converting bytes/bytearray to str and comparing
         bytes/bytearray with str or bytes with int. (-bb: issue errors)
-B     : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d     : turn on parser debugging output (for experts only, only works on
         debug builds); also PYTHONDEBUG=x
-E     : ignore PYTHON* environment variables (such as PYTHONPATH)
-h     : print this help message and exit (also -? or --help)
-i     : inspect interactively after running script; forces a prompt even
         if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-I     : isolate Python from the user's environment (implies -E and -s)
-m mod : run library module as a script (terminates option list)
-O     : remove assert and __debug__-dependent statements; add .opt-1 before
         .pyc extension; also PYTHONOPTIMIZE=x
-OO    : do -O changes and also discard docstrings; add .opt-2 before
         .pyc extension
-P     : don't prepend a potentially unsafe path to sys.path; also
         PYTHONSAFEPATH
-q     : don't print version and copyright messages on interactive startup
-s     : don't add user site directory to sys.path; also PYTHONNOUSERSITE=x
-S     : don't imply 'import site' on initialization
-u     : force the stdout and stderr streams to be unbuffered;
         this option has no effect on stdin; also PYTHONUNBUFFERED=x
-v     : verbose (trace import statements); also PYTHONVERBOSE=x
         can be supplied multiple times to increase verbosity
-V     : print the Python version number and exit (also --version)
         when given twice, print more information about the build
-W arg : warning control; arg is action:message:category:module:lineno
         also PYTHONWARNINGS=arg
-x     : skip first line of source, allowing use of non-Unix forms of #!cmd
-X opt : set implementation-specific option
--check-hash-based-pycs always|default|never:
         control how Python invalidates hash-based .pyc files
--help-env: print help about Python environment variables and exit
--help-xoptions: print help about implementation-specific -X options and exit
--help-all: print complete help information and exit

Arguments:
file   : program read from script file
-      : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]