python Strings

What does it mean for Python strings to be immutable?

• Their length cannot be changed.

• Their characters cannot be changed after creation.

• They can only store numbers.

• They can be modified in place.

What happens if you try to change a specific character in an existing Python string using indexing (e.g., str1[0] = 'B')?

• The character is successfully updated.

• A new string is automatically created with the change.

• Python will raise an error.

• The string becomes mutable.

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If you want to modify a Python string (e.g., change its first character), what is the correct approach?

• Directly assign a new character to the desired index.

• Use a built-in modify() method.

• Create an entirely new string with the desired changes.

• Convert the string to a list, modify it, then convert it back to a string.

How can you effectively 'change' a string in Python by creating a new one, as demonstrated?

• str1 = 'B' + str1[0]

• str1 = str1[1:] + 'B'

• str1 = 'B' + str1[1:]

• str1[0] = 'B'

What happens to the identity (ID number) of a Python string when you 'modify' it by creating a new string and assigning it to the same variable name?

• The ID number remains the same, as the original string is updated.

• A new ID number is assigned to the variable, indicating a new string object.

• The ID number changes only if the length of the string changes.

• Python does not track ID numbers for strings.