How to print formatted string in Python3?

Question

Hey I have a question concerning this

print ("So, you're %r old, %r tall and %r heavy.") % (
    age, height, weight)

The line doesn't work in python 3.4 do anyone know how to fix this?

Answer 1

Even though I don't know which exception you get, you can maybe try to use the format function instead:

print ("So, you're {0} old, {1} tall and {2} heavy.".format(age, height, weight))

And as mentioned within the other answers, you obviously had some issue with your parentheses.

I will still leave my solution as a reference if you want to use format.

Answer 2

you write:

print("So, you're %r old, %r tall and %r heavy.") % (age, height, weight)

when the correct is:

print("So, you're %r old, %r tall and %r heavy." % (age, height, weight))

besides that, you should think about switching to the "new" .format style which is more pythonic and doesn't requice type declaration. Started with Python 3.0 but is backported to 2.6+

print("So, you're {} old, {} tall and {} heavy.".format(age, height, weight))
#or for pinning(to skip the variable expanding if you want something 
#specific to appear twice for example)
print("So, you're {0} old, {1} tall and {2} heavy and {1} tall again".format(age, height, weight))

or if you want only python 3.6+ formatting:

print(f"So, you're {age} old, {height} tall and {weight} heavy.")