Python Dictionary Check if Key Exists
Solution 1
Let's note up front that in python a 'dictionary' is a data structure. You're using a third-party library to perform dictionary lookups (as in lexical meanings).
You also need to know how to tell if a python dictionary data structure contains a key. Keep these uses of the word 'dictionary' separate in your mind or you will rapidly get confused. In most python contexts people will assume 'dictionary' means the data structure, not a lexical dictionary like Webster's.
from PyDictionary import PyDictionary
dictionary=PyDictionary()
meanings = dictionary.meaning("test")
if 'Noun' in meanings and 'Verb' in meanings:
#do everything
elif 'Noun' in meanings:
#do something
elif 'Verb' in meanings:
#do something else
Solution 2
You can test if key exists with the following code:
if key_to_test in dict.keys():
print("The key exists")
else:
print("The key doesn't exist")
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Dan A
Updated on June 04, 2022Comments
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Dan A almost 2 years
@commands.command(aliases=['lookup']) async def define(self, message, *, arg): dictionary=PyDictionary() Define = dictionary.meaning(arg) length = len(arg.split()) if length == 1: embed = discord.Embed(description="**Noun:** " + Define["Noun"][0] + "\n\n**Verb:** " + Define["Verb"][0], color=0x00ff00) embed.set_author(name = ('Defenition of the word: ' + arg), icon_url=message.author.avatar_url) await message.send(embed=embed) else: CommandError = discord.Embed(description= "A Term must be only a single word" , color=0xfc0328) await message.channel.send(embed=CommandError)
I want to do check if
Noun
andVerb
is in the dictionaryDefine
, because when a word only has lets say a Noun in its definition then it throws an error because I am trying to bot output the Noun and Verb, see what I am getting at. I am new to dictionaries and any help is much appreciated-
Prune over 3 years
if value in my_dict
. If you'r enew to dictionaries, then your first recourse is to repeat a tutorial on dicts.
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Dan A over 3 yearsyes this would work but what would I do if a word has both Verb and Noun, the code would not work
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Moritz Schmid over 3 yearsDo a
if noun or verb in dict.keys()
or if it needs both doif noun and verb in dict.keys()