Global Meaning In Python

Python server side programming programming.

Global meaning in python. Global variables across python modules. Each module has its own private symbol table which is used as the global symbol table by all functions defined in the module. Import the config module in all modules of your application.

In python a variable declared outside of the function or in global scope is known as a global variable. Depending on where it is declared the variable may or may not be accessible inside a function. It goes away after the function completes.

Sometimes we will need to modify a variable that is present inside a function from outside its current scope. This means that a global variable can be accessed inside or outside of the function. The best way to share global variables across different modules within the same program is to create a special module often named config or cfg.

The module then becomes available as a global name. Let s see an example of how a global variable is created in python. 1 inside h.

If you don t use global within a function python uses the local namespace and the variable is local. Here is how we can share global variables across the python modules. 1 inside g.

Global variables can be used by everyone both inside of functions and outside. I mean putting the global keyword behind it in each function that uses it or defining it outside of all the functions is enough without using the global word behind its definition. So to modify a global variable in a function s block you must use a global statement to declare that the variable is defined in the global scope.