Dictionary question

Question

If I write:
"
if verb_word in verb_dict:
verb = verb_dict[verb_word]
"
1)Program will try to find this word in dictionary, but where: in keys or in words after keys and ":"?
2)"[verb_word]" is an index or key, or what?
I only know that "verb_dict[verb_word]" is word after key.
Thanks in advance!

Answer 1

Dictionaries store key:value pairs.

When you did "if verb_word in verb_dict:", 'verb_word' is assumed to be a key, and it searches for that key in the dictionary.

If the key was found, the statement "verb = verb_dict[verb_word]" is storing the value associated with the 'verb_word' key in the 'verb' variable.

Generally speaking, values are accessed via the keys when dealing with dictionaries. 😁👍🏻

Answer 2

1) if verb_word in verb_dict will check the keys
2) [verb_word] is getting the value associated with the key (whatever verb_word is)

Answer 3

Imagine you were a dictionary.

If I asked: Do you know what 'moon' means? ('moon' in dictionary'), you'd answer 'Yes!' (True)

If I asked: 'And what does moon mean?' (dictionary['moon']) You'd answer: 'It means...' (Whatever it means/whatever is stored in the dictionary.) ;-)

Answer 4

dictionaries = {key: value}
You can separate the keys into a list and separate the values into a list. Then grab the index of the word and pass it as a variable into the other list. Something like below:
'''
verb_word=input()
verb_dict={
'run':'cardio',
'sleep':'rest',
'key':'value'
}

keys=list(verb_dict.keys())
values=list(verb_dict.values())

if verb_word in keys:
x = keys.index(verb_word)
print(values[x])
elif verb_word in values:
x = values.index(verb_word)
print(keys[x])
else:
print('Word not found')
'''
verb_dict[verb_word] = value
verb_dict.values() = all values in dict
verb_dict.keys() = all keys in dict
verb_dict.items() = all key:value pairs

Returning a value from a given key is pretty straight forward. However returning a key from a given value requires a little more work