[Python] Type Error: 'function' object is not subscriptable

I have the block of code:

def name_emoji(s):
return(s in emoji.is_emoji['en'])

assert(name_emoji("❤️"))
assert(not name_emoji(""))


I'm getting this error:

TypeError Traceback (most recent call last)
Input In [34], in <cell line: 4>()
1 def name_emoji(s):
2 return(s in emoji.is_emoji['en'])
----> 4 assert(name_emoji("❤️"))
5 assert(not name_emoji(""))

Input In [34], in name_emoji(s)
1 def name_emoji(s):
----> 2 return(s in emoji.is_emoji['en'])

TypeError: 'function' object is not subscriptable

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