According to Data Science Topic-6 Identifiers

 # identifiers

# you can't start with a digit

name1 = 'Abhay'

print(name1)

Abhay

# You can use special chars -> _

first_name = 'Abhay'

print(first_name)

Abhay

_ = 'Abhay'

print(_)

Abhay

# identifiers can not be keyword

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