Ansible Vault

Encrypting secrets so ansible_password never sits in plaintext.

What is Python

• Python is a programming tool.

Source --> Udemy

What is Python

• Python is a programming language.
• It is Hybrid – meaning it Compiles and Interpret.
• It is a scripting and general purpose language.
• General purpose;
  • You can develop: Games, Desktop App, Web App, Data Science App, Machine Language App, etc.
  • Essentially you can create various types of Apps, as it contains large category of libraries to support this development.
• It is mostly used for Data app and by extension it is Data Centric.

What are Programming Languages

• Why we use language?
  • To understand each other.
  • Ex: Person1 speaking to Person2.
    • Person1 knows English.
    • Person2 knows Engligh.
    • Both can understand each other well.
  • Ex2: Person1 knows English, and Person2 Knows French.
    • They cannot understand each other.
    • So for this, we need a Translator otherwise known as Interpreter.
    • They will be in the middle, helping Person1 understand Person2, and vice versa.
    • This is what Python is used for, at least 1 of its function which is Interpreting.
• Translation
• Usages

Two types of languages

1. Low-Level languages

• Machine language
  • Nothing but 0s and 1s.
  • Humans cannot understand this.
• Assembly language
  • Humans can learn to understand and use this.
  • Still difficult.

2. High-Level languages

• Compiler --> C, C++.
• Intepreter --> Javacript, PHP.
• Hybrid --> Python, Java.

Translator

• Translator = Compiler.
  • Translate from one language to another language.

Compiler / Interpreter

Platform independent vs not independent

• Platform Independent: C program that is compiled to a .exe file and runs on windows. The same .exe won’t run on MAC or Linux. The C program needs to be re-compiled for each platform. For mac you need a .DMG file. For linux you need a .pkg file.
• Platform non-independent: A javascript program can run on any platform irrespective of their OS. They just need a runtime environment. Java uses a browser (any) to be interpreted and run as a source code actually. So anyone can see the source code.
  • The java runtime is called a JVM. Yes the browsers are the Java runtime.
• A python on the other hand also requires a runtime environment (which differs from platform to platform) but you cannot see its source code because it is compiled to a Python-byte file.
  • The python runtime is called a JVM.

Python Paradigm

• precision programming
• Object-oriented programming
• modular programming
• functional programming

lets say you are developing a program

Monolothic programming

• Functions are called inside the modules.

This text is tomato red.

Tabs Example

<div>
   <b>This is indentation</b>
</div>

console.log('Hello');

print('Hello')