typeerrorkwonly(takes positional argument but were given in factkeyword-only arguments with defaults are optionalbut those without defaults effectively become required keywords for the functiondef kwonly( *bc='spam')print(abckwonly( ='eggs' eggs spam kwonly( ='eggs'typeerrorkwonly(missing required keyword-only argument'bkwonly( typeerrorkwonly(takes positional argument but were given def kwonly( * = cd= )print(abcdkwonly( = kwonly( = = kwonly( typeerrorkwonly(missing required keyword-only argument'ckwonly( typeerrorkwonly(takes positional argument but were given ordering rules finallynote that keyword-only arguments must be specified after single starnot two --named arguments cannot appear after the **args arbitrary keywords formand *can' appear by itself in the arguments list both attempts generate syntax errordef kwonly( **pargsbc)syntaxerrorinvalid syntax def kwonly( **bc)syntaxerrorinvalid syntax this means that in function headerkeyword-only arguments must be coded before the **args arbitrary keywords form and after the *args arbitrary positional formwhen both are present whenever an argument name appears before *argsit is possibly default positional argumentnot keyword-onlydef ( * **dc= )print(abcdsyntaxerrorinvalid syntax keyword-only before **def ( *bc= ** )print(abcdcollect args in header ( = = ( {' ' ' ' default used ( = = = ( {' ' ' ' override default arguments