After installing the module, if you use IPython, you can use the%mprun,%%mprun,%memit and%%memit magics.

For IPython 0.11+, you can use the module directly as an extension, with%load_ext memory_profiler

To activate it whenever you start IPython, edit the configuration file for yourIPython profile, ~/.ipython/profile_default/ipython_config.py, to register theextension like this (If you already have other extensions, just add this one tothe list):

c.InteractiveShellApp.extensions = [    'memory_profiler',]

(If the config file doesn't already exist, runipython profile create ina terminal.)

It then can be used directly from IPython to obtain a line-by-linereport using the%mprun or%%mprun magic command. In this case, you can skipthe@profile decorator and instead use the-f parameter, likethis. Note however that function my_func must be defined in a file(cannot have been defined interactively in the Python interpreter):

In [1]: from example import my_func, my_func_2In [2]: %mprun -f my_func my_func()

or in cell mode:

In [3]: %%mprun -f my_func -f my_func_2   ...: my_func()   ...: my_func_2()

Another useful magic that we define is%memit, which is analogous to%timeit. It can be used as follows:

In [1]: %memit range(10000)peak memory: 21.42 MiB, increment: 0.41 MiBIn [2]: %memit range(1000000)peak memory: 52.10 MiB, increment: 31.08 MiB

or in cell mode (with setup code):

In [3]: %%memit l=range(1000000)   ...: len(l)   ...:peak memory: 52.14 MiB, increment: 0.08 MiB

For more details, see the docstrings of the magics.

For IPython 0.10, you can install it by editing the IPython configurationfile ~/.ipython/ipy_user_conf.py to add the following lines:

# These two lines are standard and probably already there.import IPython.ipapiip = IPython.ipapi.get()# These two are the important ones.import memory_profilermemory_profiler.load_ipython_extension(ip)