Coming from a C# background the naming convention for variables and method names are usually either camelCase or PascalCase:

// C# example string thisIsMyVariable = "a" public void ThisIsMyMethod() 

In Python, I have seen the above but I have also seen underscores being used:

# python example this_is_my_variable = 'a' def this_is_my_function(): 

Is there a more preferable, definitive coding style for Python?

Coming from a C# background the naming convention for variables and methods are usually either camelCase or PascalCase:

// C# example string thisIsMyVariable = "a" public void ThisIsMyMethod() 

In Python, I have seen the above but I have also seen snake_case being used:

# python example this_is_my_variable = 'a' def this_is_my_function(): 

Is there a more preferable, definitive coding style for Python?