question archive Python variables do not need explicit declaration to reserve memory space

Python variables do not need explicit declaration to reserve memory space

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Python variables do not need explicit declaration to reserve memory space. Based on this statement, address the following in your initial post:

  • Describe the difference between explicit typed variables and implicit typed variables using examples.
  • In large scale applications, explain whether or not explicit declaration has a better impact over implicit declaration.

 

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Difference between explicit typed variables and implicit typed variables using examples :-

 

  • In Java, C++, and other statically-typed languages, you must specify the datatype before the variable name for explicitly declare to reserve memory space, as shown in given example :-

 

int Value = 10; // explicit assignment 

 

By assigning this way the interpreter in c language get information like how much memory space is to

reserve for the variable , and also get the information like what is the type of variable.

 

  • And in python language what you assigned to the variable Based on the value of that variable, the interpreter in python allocates memory to the varible and decides what can be stored in the reserved memory. So you can assign different data types to variables what ever your need you can assign just by assigning value to the variable not to also assign the data type also be free.

 

count =100 # Like this you can assign the integer data.

 

Distance = 72.4 # Like this you can assign the floating number.

 

Name = "Rahul" # Like this you can assign the string.

 

 

In large scale applications explicit declaration has a better impact over implicit declaration because :-

 

  • In the implicit type declaration when you want to assign different datatype to different variables then you need to write each time a new statement like -

 

int count = 23;

 

float distance = 22.5;

 

char name[] = "Rahul"

 

  • And in python if you want to assign different datatype to different variable then you assigned each one of it in a single line like -

 

count,distance,name = 23,22.5,"Rahul"

 

  • Multiple declaration plays a major role in large scale applications because it will take less effort and also ensure to minimizing the error caused by the data type declaration.