Code Naming Conventions

module_name, package_name, ClassName, method_name, ExceptionName, function_name, GLOBAL_CONSTANT_NAME, global_var_name, instance_var_name, function_parameter_name, local_var_name

camelCase   StudlyCaps or CapWords or PascalCase   joined_lower_case (snake_case)   Hungarian Notation: arrInputs, sFilePath, iRandomSeed  

Avoid the use of dash '-' in any name.   Double underscore '__' for leading and trailing names (usually they have a reserved purpose).  

The most important rule is consistency and meaningful.  

Python

PEP8

Real Python

MY_LONG_CONSTANT = 32769

def my_function(default_parameter=5):
	""" function documentation
	"""
	return None

my_variable = '2.5'

MyClass {
	class_method:
}

C++

GLOBAL_CONSTANT=3.14159;
const int kDaysInAWeek = 7;
int i_local_variable = 0.0;
int *pName;	// pointer variable prepended with 'p'
struct UrlTableProperties { ...

void OpenFileOrDie();
int SolveEquation();

class MyClassAsNoun {
	int MyClassMethod() {
	}
}