Guppy-PE -- A Python Programming Environment

pip install guppy==0.1.11


This is Guppy-PE version 0.1.11

A Python Programming Environment with Heapy heap analysis toolset.

Note that his package is for Python2 only. There is a fork that is
ported and recommended for Python3 at:


This distribution provides a root package, guppy, with the following

doc	Documentation data files: *.html, *.jpg, and help support.

etc	Support modules. Contains especially the Glue protocol module.

gsl	The Guppy Specification Language implementation. This can
	be used to create documents and tests from a common source.

heapy	The heap analysis toolset. It can be used to find information
	about the objects in the heap and display the information
	in various ways.

sets	Bitsets and 'nodesets' implemented in C.

The following files are not in packages but on the toplevel:

gsl-mode-0.1.el		Emacs mode for GSL
specs/*.gsl		Specifications
specs/	Regenerates the doc/*.html files from specs/*.gsl


You should have Python 2.3, 2.4, 2.5, 2.6 or 2.7

To build the system so you can use Heapy, you should have what is
needed to build extension modules from source code. The extension
modules are used not only in Heapy but also in GSL in some
situations. (The test generator uses bitsets to speed up an

To use the graphical browser, Tkinter is needed.
To use the remote monitor, threading must be available.


Extract the files from the .tar.gz file, in Linux for example by:

tar xzf guppy-x.y.z.tar.gz

where x.y.z is the current version number. This will create the
directory guppy-x.y.z .  You should then cd into this directory.  You
can then compile the extension modules by:

python build

And to install you can do, for example, as follows to install to the
default location (when you are super-user):

python install

NOTE that you typically must LEAVE the guppy-x.y.z directory to use
Heapy, since the current directory is usually in the Python search
path, and then Python will find the guppy directory there FIRST and
will NOT find the extension modules. This may be a somewhat common
problem -- so I am noting it here for lack of a suitable fix at the

I also note that the documentation files and emacs-mode are not
automatically installed.


The following example shows

1. How to create the session context: h=hpy()
2. How to show the reachable objects in the heap: h.heap()
3. How to create and show a set of objects: h.iso(1,[],{})
4. How to show the shortest paths from the root to x: h.iso(x).sp

>>> from guppy import hpy; h=hpy()
>>> h.heap()
Partition of a set of 48477 objects. Total size = 3265516 bytes.
 Index  Count   %     Size   % Cumulative  % Kind (class / dict of class)
     0  25773  53  1612820  49   1612820  49 str
     1  11699  24   483960  15   2096780  64 tuple
     2    174   0   241584   7   2338364  72 dict of module
     3   3478   7   222592   7   2560956  78 types.CodeType
     4   3296   7   184576   6   2745532  84 function
     5    401   1   175112   5   2920644  89 dict of class
     6    108   0    81888   3   3002532  92 dict (no owner)
     7    114   0    79632   2   3082164  94 dict of type
     8    117   0    51336   2   3133500  96 type
     9    667   1    24012   1   3157512  97 __builtin__.wrapper_descriptor
<76 more rows. Type e.g. '_.more' to view.>
>>> h.iso(1,[],{})
Partition of a set of 3 objects. Total size = 176 bytes.
 Index  Count   %     Size   % Cumulative  % Kind (class / dict of class)
     0      1  33      136  77       136  77 dict (no owner)
     1      1  33       28  16       164  93 list
     2      1  33       12   7       176 100 int
>>> x=[]
>>> h.iso(x).sp
 0: h.Root.i0_modules['__main__'].__dict__['x']


To test if the heapy build and installation was ok, you can do:

>>> from guppy import hpy
>>> hpy().test()
Testing sets
Test #0
Test #1
Test #2

There will be several more tests. Some tests may take a while.

Caveat 1: Some tests may be somewhat picky, and may have to be relaxed
to pass in different installations.

Caveat 2: All tests don't currently work always in Python 2.7


Copyright (C) 2005 -- 2019 Sverker Nilsson, S. Nilsson Computer System AB

The right is granted to copy, use, modify and redistribute this code
according to the rules in what is commonly referred to as an MIT



Sverker Nilsson <> (Homepage:
Guppy-PE homepage: