Pandas for Everyone: Python Data Analysis, 2nd Edition

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Loops

Loops provide a means to perform the same action across multiple items. Multiple items are typically stored in a Python list object. Any list-like object can be iterated over (e.g., tuples, arrays, dataframes, dictionaries). More information on loops can be found in the Software-Carpentry Python lesson on loops.¹

1. https://swcarpentry.github.io/python-novice-inflammation/05-loop/index.html

To loop over a list. we use a for statement. The basic for loop looks like this:

for item in container:
  # do something

The container represents some iterable set of values (e.g., a list). The item represents a temporary variable that represents each item in the iterable. In the for statement, the first element of the container is assigned to the temporary ...