In some contexts strong typing means that all values have a well-defined unique type that cannot be changed. For python this means that the language takes care

In some contexts strong typing means that all values have a well-defined unique type that cannot be changed. For python this means that the language takes care of performing meaningful conversions when a value of a type A need to be turned into type B and also that there is no way to convince python that a value is a String (for example) if that value is not a valid string. Or from wikipedia: In Luca Cardelli's article Typeful Programming, a "strong type system" is described as one in which there is no possibility of an unchecked runtime type error.