CODEWITHSUNDEEP
pythonarraysliststring-formatting
Oskar Persson
Oskar Persson

Reputation: 6753

Calling format function with a list

How can I call the format function with a list as arguments?

I want to do something like this:

spacing = "{:<2} "*10
l = ['A','B','C','D','E','F','G','H','I','J']
print spacing.format(l)

Upvotes: 2

Views: 346

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1121834

Use the *args format:

spacing.format(*l)

This tells Python to apply each element of l as a separate argument to the .format() method.

Do note your spacing format could end up with too many or too few elements if you hardcode the count; perhaps use the length of l instead:

spacing = "{:<2} " * len(l)

or use str.join() to eliminate that last space:

spacing = ' '.join(['{:<2}'] * len(l))

Demo:

>>> l = ['A','B','C','D','E','F','G','H','I','J']
>>> spacing = ' '.join(['{:<2}'] * len(l))
>>> spacing.format(*l)
'A  B  C  D  E  F  G  H  I  J '

Upvotes: 4

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