python Write an expression whose value is True if all the letters in string s are lowercase.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Write an expression whose value is True if all the letters in string s are lowercase.

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python

Write an expression whose value is True if all the letters in string s are lowercase.

 

I answered:

s = "expression"
>>> s.lower() == s
True
>>> s = "Expression"
>>> s.lower() == s
False

 

but it said it was incorrect:

 

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