Contents

py::builtins::assert

Defined in <pypp/builtins/assert.hpp>

void assert(bool expression);                               // 1

void assert(bool expression, std::string message);          // 2

  1. Assert an expression and throws on failure.

  2. Assert an expression and throws on failure with given message.

py::builtins::assert asserts whether is given value is true (usually returned from an expression) and raises py-builtins-AssertionError on failure.

Parameters

expression: The expression to assert.

message: The message of exception message.

Complexity

Constant.

Example

#include <pypp/builtins/assert.hpp>
#include <pypp/builtins/print.hpp>

int main()
{
    py::assert(true);

    try
    {
        py::assert(false);
    }
    catch (py::AssertionError&)
    {
        py::print("assert failed: py::assert(false)");
    }
}

Output:

assert failed: py::assert(false)
py::builtins::any py::builtins::operator ->* (py::builtins::in)