Python is a very simple language, and has a very straightforward syntax. It encourages programmers to program without boilerplate (prepared) code. The simplest directive in Python is the "print" directive - it simply prints out a line (and also includes a newline, unlike in C).
There are two major Python versions, Python 2 and Python 3. Python 2 and 3 are quite different. This tutorial uses Python 2, because it is more widely used and supported. However, Python 3 is more semantically correct, and supports newer features.
For example, one difference between Python 2 and 3 is the print statement. In Python 2, the "print" statement is not a function, and therefore it is invoked without parentheses. However, in Python 3, it is a function, and must be invoked with parentheses.
Example of print in Python 2: print "Hello World!" Example of print in Python 3: print ("Hellow World")
for learning python3: https://learnxinyminutes.com/docs/python3/
Python uses indentation for blocks, instead of curly braces. Both tabs and spaces are supported, but the standard indentation requires standard Python code to use four spaces.
- Extension of python file is .py
- To execute python file in linux syntax: python filename.py