Simple way to get current memory usage from Guppy

Question

tl/dr: how do I get the current memory usage of my python program using Guppy? Is there a simple command?

I'm trying to track memory usage in a python program using guppy. This is my first usage of guppy, so I'm not very sure of how it behaves. What I want is to be able to plot the total usage as "time" progresses in a simulation. This is a basic bit of code for what I can do:

from guppy import hpy
import networkx as nx

h = hpy()
L=[1,2,3]

h.heap()

> Partition of a set of 89849 objects. Total size = 12530016 bytes.
>  Index  Count   %     Size   % Cumulative  % Kind (class / dict of class)
>     0  40337  45  3638400  29   3638400  29 str
>     1  21681  24  1874216  15   5512616  44 tuple
>     2   1435   2  1262344  10   6774960  54 dict (no owner)

But I would like to just know what the current size is (the 12530016 bytes). So I'd like to be able to call something like h.total() to get the total size. I'd be shocked if this doesn't exist as a simple command, but so far, looking through the documentation I haven't found it. It's probably documented, just not where I'm looking.

Answer 1

x = h.heap()
x.size

returns the total size. For example:

from guppy import hpy
import networkx as nx

h = hpy()

num_nodes = 1000  
num_edges = 5000  
G = nx.gnm_random_graph(num_nodes, num_edges)

x = h.heap()
print(x.size)

prints

19820968

which is consistent with the Total size reported by

print(x)
# Partition of a set of 118369 objects. Total size = 19820904 bytes.
#  Index  Count   %     Size   % Cumulative  % Kind (class / dict of class)
#      0  51057  43  6905536  35   6905536  35 str
#      1   7726   7  3683536  19  10589072  53 dict (no owner)
#      2  28416  24  2523064  13  13112136  66 tuple
#      3    516   0  1641312   8  14753448  74 dict of module
#      4   7446   6   953088   5  15706536  79 types.CodeType
#      5   6950   6   834000   4  16540536  83 function
#      6    584   0   628160   3  17168696  87 dict of type
#      7    584   0   523144   3  17691840  89 type
#      8    169   0   461696   2  18153536  92 unicode
#      9    174   0   181584   1  18335120  93 dict of class
# <235 more rows. Type e.g. '_.more' to view.>