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Simple framework for creating IRC bots

Project description

Simple framework for creating IRC bots.


from pyromancer.objects import Pyromancer

p = Pyromancer('test.settings')


host = ''
port = 6667
nick = 'PyromancerBot'
encoding = 'ISO-8859-1'

Custom commands

Writing own commands is fairly simple. Create a folder which will be the package name, with a file named in it to hold the commands. In, you can register functions to be a command with the built-in command decorator.


File layout:


from pyromancer.decorators import command

@command(r'bye (.*)')
def bye(match):
    return 'Bye {m[1]}!'


<User> !bye everyone
<Bot> Bye everyone!

Pyromancer scans automatically for functions decorated using the commands decorator, so all your commands in are used automatically.

You can also create a directory named commands with submodules containing the commands. Just make sure that you import either the modules or all of the commands in the file.

The command decorator

You must apply this to a function to mark it as a command. It will be used when scanning for and collecting commands.


  • patterns - a regular expression or a list of expressions. When a list is given, all patterns are attempted when matching the input, and only when all patterns in the list fail to match, the command is not executed.

    @command(['hi', 'hello'])
    def hi(match):
        return 'Hello!'
  • prefix - a boolean which defaults to True. When true, the command pattern is only attempted to match when the message line starts with the prefix defined in the settings of the bot. This is useful for commands which are very bot-like (in contrary to commands which look and behave like natural language). Using a boolean and a setting allows the same command to be triggered in different ways, depending on the settings of the bot which installed the command package.

  • raw - a boolean which defaults to False. When true, the raw input line sent from the server is used for matching the pattern, instead of the message. Useful for matching lines which are not a message from an user, such as nick or topic changes.

Messaging from a command

Messaging from inside the function which makes up the command is as easy as can be for simple use cases, but can be done in numerous ways for the more complex situations.

Most of the times, arguments are passed to the Match.msg function, which applies formatting by default and provides some additional utilities. The most important of those is that when no target has been passed on as an argument, it will use either the channel or the user (in case of a PM) whose input line triggered the command to be executed as the target, effectively replying.


  • message - the message to be send to the server. Formatting will be applied using any additional args and kwargs, so you can apply the full power of the Python Format Mini-Language on the message.
  • args and kwargs - arguments to be passed on through the formatting which is applied on message.

Methods of messaging

  • Return a message

    @command(r'bye (.*)')
    def bye(match):
        return 'Bye {m[1]}!'
  • Return a tuple of message and optional args and kwargs to be used when formatting message. args can be both a list of arguments, or simply all the middle elements of the tuple.

    def gibberish(match):
        return 'A = {}, B = {}, C = {c_char}', 'a', 'b', {'c_char': 'c'}
  • Yield a message or a tuple of message and optional args and kwargs. Yielding can be done as much as you want, which is the easiest way of sending multiple messages from one command.

    @command(r'say (.*)')
    def say(match):
        for part in match[1].split(', '):
            yield 'Saying {}', part
  • Return a list of message or a tuple of message and optional args and kwargs.

    def hi(match):
        return ['Hi', 'Hello']
  • Use Match.msg. This is the only way to benefit from the non-default functionalities provided by this function.

    def raw(match):
        match.msg('Raw {} message {m[1]}', raw=True)

Extra parameters for Match.msg

  • target - the target to send the message to. If not provided, it will attempt to use either the channel or user whose input line triggered the command, which effectively results in replying.
  • raw - defaults to False. When true, no formatting is applied on message.



Python 2.7 and 3.0 - 3.4 are supported. Note that development occurs on Python 3.

To do

  • Figure out how to do translation of messages through the Match.msg function.
  • Add timers
  • Add a command module which keeps track of channels joined and users in them which other commands can use.


0.4 - 2014-03-30

  • Add support for Python 2.7.
  • Add more tests.
  • Fix messaging with positional arguments given as a list not working.
  • Add ability to create commands for raw code lines by specifying a code to match.
  • Add ability to do easy message formatting for colored, underlined and bold text.

0.3 - 2014-03-22

  • Change settings to be a Python module instead of a dictionary.
  • Change package loading.
  • Enable the commands from the package of which the settings are in by default.
  • Add ability to process raw input lines.
  • Add option to use precompiled regular expressions in the command decorator.
  • Add option to pass flags for compiling the regular expressions in the command decorator.
  • Fix returning message from command not working.

0.2 - 2014-03-14

  • Add tests.
  • Add multiple and easier ways to send messages from a command.
  • Add support for multiple patterns for the same command.
  • Add a configurable command prefix setting for the more bot-like commands.
  • Trying to access a word in a Line now correctly returns an empty string when the index does not exist.
  • Fix passing positional arguments to Match.msg not working properly.

0.1 - 2013-11-17

  • Initial release.

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