Collectors /

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Collectors was initially developed to monitor SimPy simulation models but it can also be used to monitor any Python objects and collect data from them.

Our main development goals were:

  • Ease of use (simple API, little typing)
  • Efficiency:
    • No impact on simulation speed if you don’t use it.
    • As little impact as possible if you use it.
  • Flexibility and easy extensibility
  • Separation of data collection and data analysis

Simple usage example

>>> class Spam(object):
...     a = 1
...     b = 2
>>> spam = Spam()
>>> # Create and configure the collector
>>> col = Collector(
...     ('a', lambda: spam.a),
...     ('b', lambda: self.b)
... )
>>> # Collect all monitored variables (spam.a and spam.b)
>>> col()
>>> spam.a, spam.b = 3, 4
>>> col()
>>> # Get the collector’s data
>>> col
([1, 3], [2, 4])
>>> # You can also access it's elements by their name ...
>>> col.a
[1, 3]
>>> # ... or by their index
>>> col[1]
[2, 4]


Collectors has only been tested with Python 2.6 but older versions should also work. Python 3.0 might also work; if not, we’ll put it on our schedule.


The easiest way to install Collectors is via PIP or distribute:

pip install Collectors


easy_install Collectors

If you downloaded the archive, execute:

python install

And finally, if you checked out the repository and always want to use the newest version, type:

pip install -e path/to/Collectors


pip install -e https+hg://


The Documentation can be found in the docs/ directory or online.

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