Error using Lower(), upper() and title() functions

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I have the following problem, when trying to use the functions lower(), title() and upper().

My compiler simply won’t allow and displays the error 

AttributeError:'list' object has no attribute'upper'

Follows the code:

bomdia = ["list"]
bomdia2 = ["LIST"]

print(bomdia.upper())#AttributeError:'list' object has no attribute'upper'
print(bomdia2.lower())#AttributeError:'list' object has no attribute'lower'
print(bomdia.title())#AttributeError: 'list' object has no attribute 'title'
python python-3.x string

1 answer

2


Your mistake is declaring as a list the variables bomdia and bomdia2

By declaring this way you are declaring a list of string’s and the upper, Lower and title methods are string methods, so the error #AttributeError:'list' object has no attribute'upper'.

You can resolve your error in these 2 ways:

  • Continue declaring as lists and access the string within that list:

    bomdia = ["list"]
bomdia2 = ["LIST"]

print(bomdia[0].upper())
print(bomdia2[0].lower())
print(bomdia[0].title())

  • Declare variables as string

    bomdia = "list"
bomdia2 = "LIST"

print(bomdia.upper())
print(bomdia2.lower())
print(bomdia.title())

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