SB Strings and Lists

Section 10.25 Strings and Lists

Two of the most useful methods on strings involve lists of strings. The split method breaks a string into a list of words. By default, any number of whitespace characters is considered a word boundary.

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An optional argument called a delimiter can be used to specify which characters to use as word boundaries. The following example uses the string ai as the delimiter:

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Notice that the delimiter doesn’t appear in the result.

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The inverse of the split method is join. You choose a desired separator string, (often called the glue) and join the list with the glue between each of the elements.

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The list that you glue together (wds in this example) is not modified. Also, you can use empty glue or multi-character strings as glue.

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Check your understanding

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Checkpoint 10.25.1.

What is printed by the following statements?

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myname = "Edgar Allan Poe"
namelist = myname.split()
init = ""
for aname in namelist:
    init = init + aname[0]
print(init)

Poe
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Three characters but not the right ones. namelist is the list of names.
EdgarAllanPoe
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Too many characters in this case. There should be a single letter from each name.
EAP
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Yes, split creates a list of the three names. The for loop iterates through the names and creates a string from the first characters.
William Shakespeare
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That does not make any sense.

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