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How to run python files in ns3 | Python Bindings

ns3 installation with Python bindings
Yes, you can easily run Python scripts of ns3 using this technique

Follow the video for more instructions.


Steps
We are going to install ns-3.43 on this machine now. We already have Ubuntu 24.04 os 

1. go to https://www.nsnam.org and download the latest ns3 software.
2. Give these commands one after the other

$ sudo apt update
$ sudo apt install g++ python3 cmake ninja-build git gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 tcpdump wireshark sqlite3 libsqlite3-dev qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools openmpi-bin openmpi-common openmpi-doc libopenmpi-dev doxygen graphviz imagemagick python3-sphinx dia imagemagick texlive dvipng latexmk texlive-extra-utils texlive-latex-extra texlive-font-utils libeigen3-dev gsl-bin libgsl-dev libgslcblas0 libxml2 libxml2-dev libgtk-3-dev lxc-utils lxc-templates vtun uml-utilities ebtables bridge-utils libxml2 libxml2-dev libboost-all-dev ccache python3-full

Once the file is downloaded, move it to the home folder in my case its 
/home/pradeepkumar 

go to terminal 

$ tar jxvf ns-allinone-3.43.tar.bz2
$ cd ns-allinone-3.43/
$ ./build.py --enable-examples --enable-tests

Enable Python Bindings 
This process takes some time to install. We will see how to enable Python-bindings so that Python will also be used in ns3 scripts. 

To enable Python Bindings

1. open a terminal 
$ sudo apt install python3-full python3-pip
$ python3 -m venv ./myenv
$ source ./myenv/bin/activate 
(myenv) $ pip install cppyy


python bindings
python bindings



(myenv) $ cd ns-allinone-3.43/ns-3.43/
(myenv) $ ./ns3 configure --enable-python-bindings
(myenv) $ ./ns3
This process will take some time and that's it!


Copy the first.py, second,py and third.py files from the ~ns-3.43/examples/tutorial folder to ~ns-3.43/scratch/ folder  and then run the scripts as given below

(myenv) $ ./ns3 run scratch/first.py
(myenv) $ ./ns3 run scratch/second.py
(myenv) $ ./ns3 run scratch/third.py

So it is easy to install the Python bindings for ns3.

Thanks for watching my video, please subscribe to my channel...
My Tech Blog - https://www.nsnam.com/
My Personal webiste - https://www.pradeepkumar.org 

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