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Python Python Basics (Retired) Things That Count Things That Count

William Finch
William Finch
251 Points

How would I create a new variable named "summary" that insert "days" into the string "I am {} days old!"?

How would I create the variable.

days_alive.py
age = int(21)
days = int(age*52*7)

1 Answer

Hi William,

You'd want to use string interpolation. That is, "evaluating a string literal containing one or more placeholders, yielding a result in which the placeholders are replaced with their corresponding values." (wikipedia)

In Python, it looks like this:

summary = "I am {} days old!".format(days)

So what's happening here is that Python knows that the '{}' in the summary variable is a placeholder. It fills that holder by calling the .format method with the days variable as an argument.

Hope that helps! Cena

William Finch
William Finch
251 Points

Help out alot. Thank you!