There are two different ways you can write programs for Python. You can create text files that contain the code, and then run these files with Python, or you can use an Integrated Development Environment (IDE) such as IDLE 3. Either way will result in the code being run in the same way and it's just a matter of personal preference.
If you want to write the programs as text files, you need to use a text editor such as Leafpad. A word processor such as LibreOffice's Writer is unsuitable because the various formatting it uses will confuse Python. As an example, open Leafpad and create a new file that just has the line:
print("Hello World!")
Once you've created your file, just save it with the extension .py; for example testpython.py. You can then run it by opening LXTerminal and navigating to where the file is saved. Then you run python <filename>. You can use the cd command to move to different directories. For example, if you save the file in a folder called programming in your home directory, you could run it by typing the following into LXTerminal:
cd programming
python3 testpython.py
python3 testpython.py
If everything has worked correctly, you should see the following line appear on the screen:
Hello World!
Hello World!
otherwise just open python shell IDLE 3 and command print("Hello World!") press Enter you will see the output as
Hello World!
The 
Imagine Cup is an annual competition sponsored and hosted by Microsoft Corp. which brings together young technologists worldwide to help resolve some of the world's toughest challenges. Imagine Cup has several categories, such as Software Design, Embedded Development, Web Development, Project Hoshimi, IT Challenge, Algorithm, Photography, Short Film, Interface Design. Winner of the 
IEEEXtreme is a global challenge in which teams of IEEE student members – supported by an IEEE Student Branch, advised and proctored by an IEEE member – compete in a 24-hour time span against each other to solve a set of programming problems.
Google Summer of Code is a global program that offers post-secondary student developers ages 18 and older stipends to write code for various open source software projects. We have worked with open source, free software, and technology-related groups to identify and fund projects over a three month period. 2011 was the first instance of participation.
The e-Swabhimani is an initiative of the Information Communication technology agency of Sri Lanka aimed at recognizing excellence in digital content creation. It is expected that this national award would stimulate a greater interest in the development of a wide range of content and services that would serve the needs of society. The e-Swabhimani was launched in 2009. The e-Swabhimani Award process is being conducted along the lines of the World Summit Award and has input from the Digital Empowerment Foundation if India as the Knowledge Partner to ensure that the jury process conforms to international standards. The award is a stepping stone to other regional and international awards with all short listed submissions being nominated to the Manthan Award South Asia.
The World Summit Award (WSA) is a global activity to select and promote the world's best e-Content and most innovative ICT applications. It offers a worldwide platform for all who value the creative use of ICTs and who are committed to making today’s information society more inclusive. The 
This competition is held since in 2010 and is organized by SLASSCOM and Motorola Solutions. It involves training programmes conducted by the staff of the Motorola Solutions and runs over a period of 6-7 months. Competition focus on building human resource capacity in Mobile Technologies; develop entrepreneurial skills; and promote innovation among students by exposing their innovative and creative skills.