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Python Python Basics All Together Now Branch and Loop

Ali AlRabeah
Ali AlRabeah
909 Points
Posted by Ali AlRabeah
Ali AlRabeah
909 Points

How come the lowercase method allows for capitalized and lowercase "yes" answers?

Pretty interesting. In:

proceed = input("Do you want to proceed? Yes or No.  ")
if proceed.lower() == "yes":
    print("SOLD!")

By just looking at it I would assume that the input for proceed would have to be "yes" instead of "Yes" or "YES".

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

The "lower" method changes all capital letters to lower case, so the comparison can then match no matter what case was input. For example, if you do this:

print("YES".lower())  # you will see: yes
print("Yes".lower())  # you will also see: yes
Ali AlRabeah
Ali AlRabeah
909 Points
Ali AlRabeah
Ali AlRabeah
909 Points

Ah, that makes sense. It's all because it's a comparison (==). Appreciate it.