Splitting and Joining Strings

Section 8.9 Splitting and Joining Strings

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.

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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 8.9.1.

Create a new list of the 6th through 13th elements of lst (eight items in all) and assign it to the variable output.

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Checkpoint 8.9.2.

Create a variable output and assign to it a list whose elements are the words in the string str1.

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You have attempted of activities on this page.

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