Another benefit of modules is that they create additional namespaces for code. Namespaces (also called scopes) are the hierarchy of control that a module has. Normally, objects outside of a module aren't visible to code within the module; thus, they can't be accessed or utilized within the current module.
The benefit of this segregation is that variable shadowing is less likely. Variable shadowing is the creation of duplicate variable names in different blocks of code, such that one variable is hidden (shadowed) by an identical variable and cannot be accessed, or the Python interpreter may call the incorrect variable.
Using a module allows the same variable name to be used in multiple locations without requiring shadowing to occur, ...
