Python – Translators

Translators:

• Programmer can define only source code.
• We need to convert the source code into binary code before run.
• We use 2 translators to convert Source code into byte code.
  • Compiler
  • Interpreter

Compiler:

• Compiler checks the source code syntactically correct or not.
• If we define the code correctly, it converts source code into byte code.
• Compiler shows error message with line number if there is a syntax error.

Note: Java programming language use compilation

class Program {             public static void main(String[] args)             {                         int a=10;                         System.out.println(“a val : ” + a);                         int b=20;                         System.out.println(“b val : ” + b);                         System.out.println(“c val : ” + c);             } } Compile: Error @ line – 11 (variable “c” not present)

Interpreter:

• Line by line translation of source code into binary code.
• Python uses interpreter for program execution.

Note: Python programming uses interpretation

a=10 print(“a val :”,a) b=20 print(“b val :”,b) print(“c val :”,c)   Output:           a val : 10 b val : 20 NameError: name ‘c’ is not defined