December Meet Minutes

The meetup started at 3:20 with the context setting done by Vijay. He articulated the fact that the purpose of such meetups is to meet people and exchange ideas and not to view this as a training or workshop.

Developing Odoo Modules

Ramadass Mahalingam gave the first talk on ODOO, an open source equivalent of SAP. He spoke about the dependent packages, installation requirements, the data types in Python. He followed it up by creating a Chennaipy database and showing us how to modify the code for adding a new field (PAN), a parameter needed in the database considering the Indian context. He used ODOO version 9 for this.

Python Byte Code Hacking

The second talk was by Vijay, on Python Code byte hacking. This talk was meant for educational purposes and to understand how Python works internally.

He explained about bytecode, role of compilers, and the format of the byte code given as input to the Python interpreter. It is to be noted that the Python interpreter is modelled on a microprocessor and he presented a few slides to motivate the same. He then spoke about stack machines, dis-assembly and about hacking the constants in the Python byte code. He had written example codes for the same and ran it during the talk.

Finally, the whole program was written completely in Python byte code and there was no Python programming language statements at all.

Python for Microcontrollers

The third talk was given by Babu Subash Chander on MicroPython,i.e using Python for microcontrollers. He explained that MicroPython was the work of Damien and spoke about the footprint size and the associated details. He then moved on to NuttX an RTOS and explained the differences between 2 boards.

Introduction to MIMO

The final talk was on MIMO by Ashok Govindarajan. The talk was about using multiple antennas for communication and how it results in increased data rate for the user, resulting in faster downloads of movies, etc in the users smart phone.

The 4G (LTE) architecture was taken for reference, and the User equipment (Smart phone), base-station and the wireless channel between the User equipment and the base station was explained. Post that an analogy was given and the idea was extended to MIMO.

The core point of the talk was that data rate can be increased by 2 or 4 times by switching from SISO to MIMO using 2x2 or 4x4, with the same amount of signal power as used in SISO.

The talk was concluded with references to massive MIMO and the state of art as on Sep 2015. The role of machine algorithms was touched upon and the libraries present in Python for the same were also explored.

Lightning Talks

We then moved on to the lightning talk where Mahesh from Duta systems spoke about the work done in Duta. They primarily provide content to subscribers on WhatsApp. They are looking for Python experts and interested people can write to

Group Photo

The session concluded with a group photo.

Meeting Minutes contributed by Ashok Govindarajan.

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