Which statements describe the symbol-table API design in §4.4 (also followed by Python's dict )? Select all that apply. Wrong choices reduce your mark (not below 0).
Watter stellings beskryf die ontwerp van die simbooltabel-API in §4.4? Kies al die korrekte opsies. Verkeerde keuses verminder jou punt (nie onder 0 nie).

Question

Which statements describe the symbol-table API design in §4.4 (also followed by Python's  dict )? Select  all  that apply. Wrong choices reduce your mark (not below 0). 
 Watter stellings beskryf die ontwerp van die simbooltabel-API in §4.4? Kies  al  die korrekte opsies. Verkeerde keuses verminder jou punt (nie onder 0 nie).

Answer

A key can have several values at once;  st[key]  returns all of them. /  'n Sleutel kan verskeie waardes tegelyk hê;  st[key]  gee hulle almal terug.

Answer

st[key]  raises a  KeyError  if no value is associated with  key . /  st[key]  gee 'n  KeyError  as geen waarde met  key  geassosieer is nie.

Answer

st[key]  returns  None  if the key is not in the table. /  st[key]  gee  None  terug as die sleutel nie in die tabel is nie.

Answer

Putting a value for a key that is already present replaces the old value. /  Om 'n waarde vir 'n sleutel wat reeds teenwoordig is te stoor, vervang die ou waarde.

Answer

index.py  associates several positions with one key by storing a Python list as the value. /  index.py  assosieer verskeie posisies met een sleutel deur 'n Python-lys as die waarde te stoor.

Answer

The basic API requires keys to be comparable with  < . /  Die basiese API vereis dat sleutels met  <  vergelykbaar is.

Answer

None  can never be used as a key or a value. /  None  kan nooit as 'n sleutel of 'n waarde gebruik word nie.

Answer

Keys are assumed to be immutable: they do not change while in the table. /  Sleutels word as onveranderbaar aanvaar: hulle verander nie terwyl hulle in die tabel is nie.

Crowdly

Which statements describe the symbol-table API design in §4.4 (also followed by ...

Want instant access to all verified answers on stemlearn.sun.ac.za?