Ingxaki ephambili nge __sub__ kukuba ingasetyenziselwa ukwenza udidi olusezantsi olungahambelani nohlobo loqobo.
def __sub__(self, other):
"""Subtract two vectors."""
if len(self) != len(other):
raise ValueError("Cannot subtract vectors of different lengths.")
return Vector([x - y for x, y in zip(self, other)])
Le yinkcazo yomsebenzi wokuthabatha into yeVector. Ukuba iivektha ezimbini ezithatyathiweyo azilingani ngobude, iya kuphakamisa i-ValueError. Ngaphandle koko, iya kubuyisela into entsha yeVector emacandelo ayo ahlukeneyo amacandelo ahambelanayo eevector ezimbini zokufaka.
_sub_, ezinye iingxoxo ngokwakho
KwiPython, i-sub-argument yingxoxo eyinxalenye yenye ingxoxo. Umzekelo, kule khowudi ilandelayo, ingxoxo yokuqala (x) yingxoxo engaphantsi yengxoxo yesibini (y):
x = 5
y = 10
Kule meko, u-x kunye no-y ziingxoxo ezingezantsi zengxoxo yesithathu (z).
Iimeko zeKlasi
KwiPython, iiklasi ziyimizekelo yeklasi. Iklasi yitemplate yokwenza izinto. Udala umzekelo weklasi ngokusebenzisa iklasi yegama elingundoqo elilandelwa ligama leklasi. Umzekelo, ukwenza umzekelo weklasi yeMyClass, ungasebenzisa le ngxelo ilandelayo:
myclass = Udidi lwam ()
Unokwenza kwakhona umzekelo weklasi ngokusebenzisa umsebenzi womakhi ochazwe eklasini. Umsebenzi womakhi uthatha ingxabano enye, eligama lento ofuna ukuyidala. Umzekelo, ukwenza umzekelo weklasi yeMyClass kwaye ubize umsebenzi womakhi wayo, ungasebenzisa le ngxelo ilandelayo:
myclass = Iklasi yam (igama = "uJohn")
Indlela yomlingo
Akukho mpendulo ilingana-yonke kulo mbuzo, njengeyona ndlela ilungileyo yokufikelela kwimethodi yomlingo kwiPython iya kwahluka ngokuxhomekeke kwiimfuno zakho ezithile. Nangona kunjalo, ezinye iingcebiso malunga nendlela yokusebenzisa indlela yomlingo kwiPython ibandakanya ukuyisebenzisa ukwenza imisebenzi edinayo okanye ukwenza imisebenzi entsonkothileyo ngokukhawuleza nangokulula. Ukongeza, soloko uqinisekisa ukuba uyayiqonda ingozi enokubakho ehambelana nokusebenzisa indlela yomlingo, njengoko kunokuba yingozi ukuba ayisetyenziswanga ngokuchanekileyo.
