InterfaceError¶

InterfaceError(code, field, message)

A program's interface refused what it was given or what it gave back.

code is "interface-input" (a call given what the interface does not take), "interface-output" (the code returned what the interface does not give) or "interface-malformed" (the interface itself breaks the rules, when the program is defined or read from a folder). field names the field at fault, or is None when the fault is no field's.

It is a TypeError (as Python's own wrong arguments are) and a ValueError (a value that does not fit).