Naming 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. Names to Avoid single character names except for counters or iterators dashes (-) in any package/module name __double_leading_and_trailing_underscore__ names (reserved by Python) Naming Convention "Internal" mea..